/** Generated on 2012-12-18T17:04:29.198383 */
;/**
 * @license Copyright 2012 Beta Cubed. All rights reserved.
 * Polychart.js charting library. 
 * This library uses the following projects.
 *
 * JSON2.js
 * d3.js
 * underscore.js
 * underscore.string.js
 * raphael.js
 */
var gg = (function(){
;//     Underscore.js 1.3.1
//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
//     Underscore is freely distributable under the MIT license.
//     Portions of Underscore are inspired or borrowed from Prototype,
//     Oliver Steele's Functional, and John Resig's Micro-Templating.
//     For all details and documentation:
//     http://documentcloud.github.com/underscore

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `global` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Establish the object that gets returned to break out of a loop iteration.
  var breaker = {};

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var slice            = ArrayProto.slice,
      unshift          = ArrayProto.unshift,
      toString         = ObjProto.toString,
      hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeForEach      = ArrayProto.forEach,
    nativeMap          = ArrayProto.map,
    nativeReduce       = ArrayProto.reduce,
    nativeReduceRight  = ArrayProto.reduceRight,
    nativeFilter       = ArrayProto.filter,
    nativeEvery        = ArrayProto.every,
    nativeSome         = ArrayProto.some,
    nativeIndexOf      = ArrayProto.indexOf,
    nativeLastIndexOf  = ArrayProto.lastIndexOf,
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind;

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) { return new wrapper(obj); };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in
  // the browser, add `_` as a global object via a string identifier,
  // for Closure Compiler "advanced" mode.
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root['_'] = _;
  }

  // Current version.
  _.VERSION = '1.3.1';

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles objects with the built-in `forEach`, arrays, and raw objects.
  // Delegates to **ECMAScript 5**'s native `forEach` if available.
  var each = _.each = _.forEach = function(obj, iterator, context) {
    if (obj == null) return;
    if (nativeForEach && obj.forEach === nativeForEach) {
      obj.forEach(iterator, context);
    } else if (obj.length === +obj.length) {
      for (var i = 0, l = obj.length; i < l; i++) {
        if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
      }
    } else {
      for (var key in obj) {
        if (_.has(obj, key)) {
          if (iterator.call(context, obj[key], key, obj) === breaker) return;
        }
      }
    }
  };

  // Return the results of applying the iterator to each element.
  // Delegates to **ECMAScript 5**'s native `map` if available.
  _.map = _.collect = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
    each(obj, function(value, index, list) {
      results[results.length] = iterator.call(context, value, index, list);
    });
    if (obj.length === +obj.length) results.length = obj.length;
    return results;
  };

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduce && obj.reduce === nativeReduce) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
    }
    each(obj, function(value, index, list) {
      if (!initial) {
        memo = value;
        initial = true;
      } else {
        memo = iterator.call(context, memo, value, index, list);
      }
    });
    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
    return memo;
  };

  // The right-associative version of reduce, also known as `foldr`.
  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
    }
    var reversed = _.toArray(obj).reverse();
    if (context && !initial) iterator = _.bind(iterator, context);
    return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
  };

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, iterator, context) {
    var result;
    any(obj, function(value, index, list) {
      if (iterator.call(context, value, index, list)) {
        result = value;
        return true;
      }
    });
    return result;
  };

  // Return all the elements that pass a truth test.
  // Delegates to **ECMAScript 5**'s native `filter` if available.
  // Aliased as `select`.
  _.filter = _.select = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
    each(obj, function(value, index, list) {
      if (iterator.call(context, value, index, list)) results[results.length] = value;
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    each(obj, function(value, index, list) {
      if (!iterator.call(context, value, index, list)) results[results.length] = value;
    });
    return results;
  };

  // Determine whether all of the elements match a truth test.
  // Delegates to **ECMAScript 5**'s native `every` if available.
  // Aliased as `all`.
  _.every = _.all = function(obj, iterator, context) {
    var result = true;
    if (obj == null) return result;
    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
    each(obj, function(value, index, list) {
      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if at least one element in the object matches a truth test.
  // Delegates to **ECMAScript 5**'s native `some` if available.
  // Aliased as `any`.
  var any = _.some = _.any = function(obj, iterator, context) {
    iterator || (iterator = _.identity);
    var result = false;
    if (obj == null) return result;
    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
    each(obj, function(value, index, list) {
      if (result || (result = iterator.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if a given value is included in the array or object using `===`.
  // Aliased as `contains`.
  _.include = _.contains = function(obj, target) {
    var found = false;
    if (obj == null) return found;
    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
    found = any(obj, function(value) {
      return value === target;
    });
    return found;
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    return _.map(obj, function(value) {
      return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, function(value){ return value[key]; });
  };

  // Return the maximum element or (element-based computation).
  _.max = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.max.apply(Math, obj);
    if (!iterator && _.isEmpty(obj)) return -Infinity;
    var result = {computed : -Infinity};
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      computed >= result.computed && (result = {value : value, computed : computed});
    });
    return result.value;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.min.apply(Math, obj);
    if (!iterator && _.isEmpty(obj)) return Infinity;
    var result = {computed : Infinity};
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      computed < result.computed && (result = {value : value, computed : computed});
    });
    return result.value;
  };

  // Shuffle an array.
  _.shuffle = function(obj) {
    var shuffled = [], rand;
    each(obj, function(value, index, list) {
      if (index == 0) {
        shuffled[0] = value;
      } else {
        rand = Math.floor(Math.random() * (index + 1));
        shuffled[index] = shuffled[rand];
        shuffled[rand] = value;
      }
    });
    return shuffled;
  };

  // Sort the object's values by a criterion produced by an iterator.
  _.sortBy = function(obj, iterator, context) {
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value : value,
        criteria : iterator.call(context, value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }), 'value');
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = function(obj, val) {
    var result = {};
    var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
    each(obj, function(value, index) {
      var key = iterator(value, index);
      (result[key] || (result[key] = [])).push(value);
    });
    return result;
  };

  // Use a comparator function to figure out at what index an object should
  // be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iterator) {
    iterator || (iterator = _.identity);
    var low = 0, high = array.length;
    while (low < high) {
      var mid = (low + high) >> 1;
      iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
    }
    return low;
  };

  // Safely convert anything iterable into a real, live array.
  _.toArray = function(iterable) {
    if (!iterable)                return [];
    if (iterable.toArray)         return iterable.toArray();
    if (_.isArray(iterable))      return slice.call(iterable);
    if (_.isArguments(iterable))  return slice.call(iterable);
    return _.values(iterable);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    return _.isArray(obj) ? obj.length : _.keys(obj).length;
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head`. The **guard** check allows it to work
  // with `_.map`.
  _.first = _.head = function(array, n, guard) {
    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
  };

  // Returns everything but the last entry of the array. Especcialy useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N. The **guard** check allows it to work with
  // `_.map`.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array. The **guard** check allows it to work with `_.map`.
  _.last = function(array, n, guard) {
    if ((n != null) && !guard) {
      return slice.call(array, Math.max(array.length - n, 0));
    } else {
      return array[array.length - 1];
    }
  };

  // Returns everything but the first entry of the array. Aliased as `tail`.
  // Especially useful on the arguments object. Passing an **index** will return
  // the rest of the values in the array from that index onward. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = function(array, index, guard) {
    return slice.call(array, (index == null) || guard ? 1 : index);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, function(value){ return !!value; });
  };

  // Return a completely flattened version of an array.
  _.flatten = function(array, shallow) {
    return _.reduce(array, function(memo, value) {
      if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
      memo[memo.length] = value;
      return memo;
    }, []);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    return _.difference(array, slice.call(arguments, 1));
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iterator) {
    var initial = iterator ? _.map(array, iterator) : array;
    var results = [];
    // The `isSorted` flag is irrelevant if the array only contains two elements.
    if (array.length < 3) isSorted = true;
    _.reduce(initial, function (memo, value, index) {
      if (isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
        memo.push(value);
        results.push(array[index]);
      }
      return memo;
    }, []);
    return results;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = function() {
    return _.uniq(_.flatten(arguments, true));
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays. (Aliased as "intersect" for back-compat.)
  _.intersection = _.intersect = function(array) {
    var rest = slice.call(arguments, 1);
    return _.filter(_.uniq(array), function(item) {
      return _.every(rest, function(other) {
        return _.indexOf(other, item) >= 0;
      });
    });
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = function(array) {
    var rest = _.flatten(slice.call(arguments, 1), true);
    return _.filter(array, function(value){ return !_.include(rest, value); });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function() {
    var args = slice.call(arguments);
    var length = _.max(_.pluck(args, 'length'));
    var results = new Array(length);
    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
    return results;
  };

  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
  // we need this function. Return the position of the first occurrence of an
  // item in an array, or -1 if the item is not included in the array.
  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = function(array, item, isSorted) {
    if (array == null) return -1;
    var i, l;
    if (isSorted) {
      i = _.sortedIndex(array, item);
      return array[i] === item ? i : -1;
    }
    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
    for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
    return -1;
  };

  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
  _.lastIndexOf = function(array, item) {
    if (array == null) return -1;
    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
    var i = array.length;
    while (i--) if (i in array && array[i] === item) return i;
    return -1;
  };

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (arguments.length <= 1) {
      stop = start || 0;
      start = 0;
    }
    step = arguments[2] || 1;

    var len = Math.max(Math.ceil((stop - start) / step), 0);
    var idx = 0;
    var range = new Array(len);

    while(idx < len) {
      range[idx++] = start;
      start += step;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Reusable constructor function for prototype setting.
  var ctor = function(){};

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Binding with arguments is also known as `curry`.
  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
  // We check for `func.bind` first, to fail fast when `func` is undefined.
  _.bind = function bind(func, context) {
    var bound, args;
    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    if (!_.isFunction(func)) throw new TypeError;
    args = slice.call(arguments, 2);
    return bound = function() {
      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
      ctor.prototype = func.prototype;
      var self = new ctor;
      var result = func.apply(self, args.concat(slice.call(arguments)));
      if (Object(result) === result) return result;
      return self;
    };
  };

  // Bind all of an object's methods to that object. Useful for ensuring that
  // all callbacks defined on an object belong to it.
  _.bindAll = function(obj) {
    var funcs = slice.call(arguments, 1);
    if (funcs.length == 0) funcs = _.functions(obj);
    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memo = {};
    hasher || (hasher = _.identity);
    return function() {
      var key = hasher.apply(this, arguments);
      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
    };
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){ return func.apply(func, args); }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = function(func) {
    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
  };

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time.
  _.throttle = function(func, wait) {
    var context, args, timeout, throttling, more;
    var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
    return function() {
      context = this; args = arguments;
      var later = function() {
        timeout = null;
        if (more) func.apply(context, args);
        whenDone();
      };
      if (!timeout) timeout = setTimeout(later, wait);
      if (throttling) {
        more = true;
      } else {
        func.apply(context, args);
      }
      whenDone();
      throttling = true;
    };
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var timeout;
    return function() {
      var context = this, args = arguments;
      var later = function() {
        timeout = null;
        if (!immediate) func.apply(context, args);
      };
      if (immediate && !timeout) func.apply(context, args);
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = function(func) {
    var ran = false, memo;
    return function() {
      if (ran) return memo;
      ran = true;
      return memo = func.apply(this, arguments);
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return function() {
      var args = [func].concat(slice.call(arguments, 0));
      return wrapper.apply(this, args);
    };
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var funcs = arguments;
    return function() {
      var args = arguments;
      for (var i = funcs.length - 1; i >= 0; i--) {
        args = [funcs[i].apply(this, args)];
      }
      return args[0];
    };
  };

  // Returns a function that will only be executed after being called N times.
  _.after = function(times, func) {
    if (times <= 0) return func();
    return function() {
      if (--times < 1) { return func.apply(this, arguments); }
    };
  };

  // Object Functions
  // ----------------

  // Retrieve the names of an object's properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = nativeKeys || function(obj) {
    if (obj !== Object(obj)) throw new TypeError('Invalid object');
    var keys = [];
    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    return _.map(obj, _.identity);
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      for (var prop in source) {
        obj[prop] = source[prop];
      }
    });
    return obj;
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      for (var prop in source) {
        if (obj[prop] == null) obj[prop] = source[prop];
      }
    });
    return obj;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Internal recursive comparison function.
  function eq(a, b, stack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
    if (a === b) return a !== 0 || 1 / a == 1 / b;
    // A strict comparison is necessary because `null == undefined`.
    if (a == null || b == null) return a === b;
    // Unwrap any wrapped objects.
    if (a._chain) a = a._wrapped;
    if (b._chain) b = b._wrapped;
    // Invoke a custom `isEqual` method if one is provided.
    if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
    if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className != toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, dates, and booleans are compared by value.
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return a == String(b);
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
        // other numeric values.
        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a == +b;
      // RegExps are compared by their source patterns and flags.
      case '[object RegExp]':
        return a.source == b.source &&
               a.global == b.global &&
               a.multiline == b.multiline &&
               a.ignoreCase == b.ignoreCase;
    }
    if (typeof a != 'object' || typeof b != 'object') return false;
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
    var length = stack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (stack[length] == a) return true;
    }
    // Add the first object to the stack of traversed objects.
    stack.push(a);
    var size = 0, result = true;
    // Recursively compare objects and arrays.
    if (className == '[object Array]') {
      // Compare array lengths to determine if a deep comparison is necessary.
      size = a.length;
      result = size == b.length;
      if (result) {
        // Deep compare the contents, ignoring non-numeric properties.
        while (size--) {
          // Ensure commutative equality for sparse arrays.
          if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
        }
      }
    } else {
      // Objects with different constructors are not equivalent.
      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
      // Deep compare objects.
      for (var key in a) {
        if (_.has(a, key)) {
          // Count the expected number of properties.
          size++;
          // Deep compare each member.
          if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break;
        }
      }
      // Ensure that both objects contain the same number of properties.
      if (result) {
        for (key in b) {
          if (_.has(b, key) && !(size--)) break;
        }
        result = !size;
      }
    }
    // Remove the first object from the stack of traversed objects.
    stack.pop();
    return result;
  }

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b, []);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
    for (var key in obj) if (_.has(obj, key)) return false;
    return true;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType == 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) == '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    return obj === Object(obj);
  };

  // Is a given variable an arguments object?
  _.isArguments = function(obj) {
    return toString.call(obj) == '[object Arguments]';
  };
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return !!(obj && _.has(obj, 'callee'));
    };
  }

  // Is a given value a function?
  _.isFunction = function(obj) {
    return toString.call(obj) == '[object Function]';
  };

  // Is a given value a string?
  _.isString = function(obj) {
    return toString.call(obj) == '[object String]';
  };

  // Is a given value a number?
  _.isNumber = function(obj) {
    return toString.call(obj) == '[object Number]';
  };

  // Is the given value `NaN`?
  _.isNaN = function(obj) {
    // `NaN` is the only value for which `===` is not reflexive.
    return obj !== obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
  };

  // Is a given value a date?
  _.isDate = function(obj) {
    return toString.call(obj) == '[object Date]';
  };

  // Is the given value a regular expression?
  _.isRegExp = function(obj) {
    return toString.call(obj) == '[object RegExp]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Has own property?
  _.has = function(obj, key) {
    return hasOwnProperty.call(obj, key);
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iterators.
  _.identity = function(value) {
    return value;
  };

  // Run a function **n** times.
  _.times = function (n, iterator, context) {
    for (var i = 0; i < n; i++) iterator.call(context, i);
  };

  // Escape a string for HTML interpolation.
  _.escape = function(string) {
    return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
  };

  // If the value of the named property is a function then invoke it;
  // otherwise, return it.
  _.result = function(object, property) {
    if (object == null) return null;
    var value = object[property];
    return _.isFunction(value) ? value.call(object) : value;
  };

  // Add your own custom functions to the Underscore object, ensuring that
  // they're correctly added to the OOP wrapper as well.
  _.mixin = function(obj) {
    each(_.functions(obj), function(name){
      addToWrapper(name, _[name] = obj[name]);
    });
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = idCounter++;
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g,
    escape      : /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /.^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    '\\': '\\',
    "'": "'",
    'r': '\r',
    'n': '\n',
    't': '\t',
    'u2028': '\u2028',
    'u2029': '\u2029'
  };

  for (var p in escapes) escapes[escapes[p]] = p;
  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
  var unescaper = /\\(\\|'|r|n|t|u2028|u2029)/g;

  // Within an interpolation, evaluation, or escaping, remove HTML escaping
  // that had been previously added.
  var unescape = function(code) {
    return code.replace(unescaper, function(match, escape) {
      return escapes[escape];
    });
  };

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  _.template = function(str, data) {
    var settings  = _.templateSettings;
    var source = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
      'with(obj||{}){__p.push(\'' +
      str
        .replace(escaper, function(match) {
          return '\\' + escapes[match];
        })
        .replace(settings.escape || noMatch, function(match, code) {
          return "',\n_.escape(" + unescape(code) + "),\n'";
        })
        .replace(settings.interpolate || noMatch, function(match, code) {
          return "',\n" + unescape(code) + ",\n'";
        })
        .replace(settings.evaluate || noMatch, function(match, code) {
          return "');\n" + unescape(code) + "\n;__p.push('";
        })
        + "');\n}\nreturn __p.join('');";
    var render = new Function('obj', '_', source);
    if (data) return render(data, _);
    var template = function(data) {
      return render.call(this, data, _);
    };
    template.source = 'function(obj){\n' + source + '\n}';
    return template;
  };

  // Add a "chain" function, which will delegate to the wrapper.
  _.chain = function(obj) {
    return _(obj).chain();
  };

  // The OOP Wrapper
  // ---------------

  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.
  var wrapper = function(obj) { this._wrapped = obj; };

  // Expose `wrapper.prototype` as `_.prototype`
  _.prototype = wrapper.prototype;

  // Helper function to continue chaining intermediate results.
  var result = function(obj, chain) {
    return chain ? _(obj).chain() : obj;
  };

  // A method to easily add functions to the OOP wrapper.
  var addToWrapper = function(name, func) {
    wrapper.prototype[name] = function() {
      var args = slice.call(arguments);
      unshift.call(args, this._wrapped);
      return result(func.apply(_, args), this._chain);
    };
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    wrapper.prototype[name] = function() {
      var wrapped = this._wrapped;
      method.apply(wrapped, arguments);
      var length = wrapped.length;
      if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0];
      return result(wrapped, this._chain);
    };
  });

  // Add all accessor Array functions to the wrapper.
  each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    wrapper.prototype[name] = function() {
      return result(method.apply(this._wrapped, arguments), this._chain);
    };
  });

  // Start chaining a wrapped Underscore object.
  wrapper.prototype.chain = function() {
    this._chain = true;
    return this;
  };

  // Extracts the result from a wrapped and chained object.
  wrapper.prototype.value = function() {
    return this._wrapped;
  };

}).call(this);
;// Underscore.string
// (c) 2010 Esa-Matti Suuronen <esa-matti aet suuronen dot org>
// Underscore.strings is freely distributable under the terms of the MIT license.
// Documentation: https://github.com/epeli/underscore.string
// Some code is borrowed from MooTools and Alexandru Marasteanu.

// Version 2.2.0rc

!function(root){
  'use strict';

  // Defining helper functions.

  var nativeTrim = String.prototype.trim;
  var nativeTrimRight = String.prototype.trimRight;
  var nativeTrimLeft = String.prototype.trimLeft;

  var parseNumber = function(source) { return source * 1 || 0; };
  
  var strRepeat = function(str, qty, separator){
    // ~~var — is the fastest available way to convert anything to Integer in javascript.
    // We'll use it extensively in this lib.
    str += ''; qty = ~~qty;
    for (var repeat = []; qty > 0; repeat[--qty] = str) {}
    return repeat.join(separator == null ? '' : separator);
  };

  var slice = function(a){
    return Array.prototype.slice.call(a);
  };

  var defaultToWhiteSpace = function(characters){
    if (characters != null) {
      return '[' + _s.escapeRegExp(''+characters) + ']';
    }
    return '\\s';
  };
  
  var escapeChars = {
    lt: '<',
    gt: '>',
    quot: '"',
    apos: "'",
    amp: '&'
  };
  
  var reversedEscapeChars = {};
  for(var key in escapeChars){ reversedEscapeChars[escapeChars[key]] = key; }

  // sprintf() for JavaScript 0.7-beta1
  // http://www.diveintojavascript.com/projects/javascript-sprintf
  //
  // Copyright (c) Alexandru Marasteanu <alexaholic [at) gmail (dot] com>
  // All rights reserved.

  var sprintf = (function() {
    function get_type(variable) {
      return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase();
    }

    var str_repeat = strRepeat;

    var str_format = function() {
      if (!str_format.cache.hasOwnProperty(arguments[0])) {
        str_format.cache[arguments[0]] = str_format.parse(arguments[0]);
      }
      return str_format.format.call(null, str_format.cache[arguments[0]], arguments);
    };

    str_format.format = function(parse_tree, argv) {
      var cursor = 1, tree_length = parse_tree.length, node_type = '', arg, output = [], i, k, match, pad, pad_character, pad_length;
      for (i = 0; i < tree_length; i++) {
        node_type = get_type(parse_tree[i]);
        if (node_type === 'string') {
          output.push(parse_tree[i]);
        }
        else if (node_type === 'array') {
          match = parse_tree[i]; // convenience purposes only
          if (match[2]) { // keyword argument
            arg = argv[cursor];
            for (k = 0; k < match[2].length; k++) {
              if (!arg.hasOwnProperty(match[2][k])) {
                throw new Error(sprintf('[_.sprintf] property "%s" does not exist', match[2][k]));
              }
              arg = arg[match[2][k]];
            }
          } else if (match[1]) { // positional argument (explicit)
            arg = argv[match[1]];
          }
          else { // positional argument (implicit)
            arg = argv[cursor++];
          }

          if (/[^s]/.test(match[8]) && (get_type(arg) != 'number')) {
            throw new Error(sprintf('[_.sprintf] expecting number but found %s', get_type(arg)));
          }
          switch (match[8]) {
            case 'b': arg = arg.toString(2); break;
            case 'c': arg = String.fromCharCode(arg); break;
            case 'd': arg = parseInt(arg, 10); break;
            case 'e': arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential(); break;
            case 'f': arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg); break;
            case 'o': arg = arg.toString(8); break;
            case 's': arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg); break;
            case 'u': arg = Math.abs(arg); break;
            case 'x': arg = arg.toString(16); break;
            case 'X': arg = arg.toString(16).toUpperCase(); break;
          }
          arg = (/[def]/.test(match[8]) && match[3] && arg >= 0 ? '+'+ arg : arg);
          pad_character = match[4] ? match[4] == '0' ? '0' : match[4].charAt(1) : ' ';
          pad_length = match[6] - String(arg).length;
          pad = match[6] ? str_repeat(pad_character, pad_length) : '';
          output.push(match[5] ? arg + pad : pad + arg);
        }
      }
      return output.join('');
    };

    str_format.cache = {};

    str_format.parse = function(fmt) {
      var _fmt = fmt, match = [], parse_tree = [], arg_names = 0;
      while (_fmt) {
        if ((match = /^[^\x25]+/.exec(_fmt)) !== null) {
          parse_tree.push(match[0]);
        }
        else if ((match = /^\x25{2}/.exec(_fmt)) !== null) {
          parse_tree.push('%');
        }
        else if ((match = /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fosuxX])/.exec(_fmt)) !== null) {
          if (match[2]) {
            arg_names |= 1;
            var field_list = [], replacement_field = match[2], field_match = [];
            if ((field_match = /^([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
              field_list.push(field_match[1]);
              while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
                if ((field_match = /^\.([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
                  field_list.push(field_match[1]);
                }
                else if ((field_match = /^\[(\d+)\]/.exec(replacement_field)) !== null) {
                  field_list.push(field_match[1]);
                }
                else {
                  throw new Error('[_.sprintf] huh?');
                }
              }
            }
            else {
              throw new Error('[_.sprintf] huh?');
            }
            match[2] = field_list;
          }
          else {
            arg_names |= 2;
          }
          if (arg_names === 3) {
            throw new Error('[_.sprintf] mixing positional and named placeholders is not (yet) supported');
          }
          parse_tree.push(match);
        }
        else {
          throw new Error('[_.sprintf] huh?');
        }
        _fmt = _fmt.substring(match[0].length);
      }
      return parse_tree;
    };

    return str_format;
  })();



  // Defining underscore.string

  var _s = {

    VERSION: '2.2.0rc',

    isBlank: function(str){
      return (/^\s*$/).test(str);
    },

    stripTags: function(str){
      return (''+str).replace(/<\/?[^>]+>/g, '');
    },

    capitalize : function(str) {
      str += '';
      return str.charAt(0).toUpperCase() + str.substring(1);
    },

    chop: function(str, step){
      str = str+'';
      step = ~~step || str.length;
      var arr = [];
      for (var i = 0; i < str.length; i += step)
        arr.push(str.slice(i,i + step));
      return arr;
    },

    clean: function(str){
      return _s.strip(str).replace(/\s+/g, ' ');
    },

    count: function(str, substr){
      str += ''; substr += '';
      return str.split(substr).length - 1;
    },

    chars: function(str) {
      return (''+str).split('');
    },

    escapeHTML: function(str) {
      return (''+str).replace(/[&<>"']/g, function(match){ return '&' + reversedEscapeChars[match] + ';'; });
    },

    unescapeHTML: function(str) {
      return (''+str).replace(/\&([^;]+);/g, function(entity, entityCode){
        var match;
        
        if (entityCode in escapeChars) {
          return escapeChars[entityCode];
        } else if (match = entityCode.match(/^#x([\da-fA-F]+)$/)) {
          return String.fromCharCode(parseInt(match[1], 16));
        } else if (match = entityCode.match(/^#(\d+)$/)) {
          return String.fromCharCode(~~match[1]);
        } else {
          return entity;
        }
      });
    },

    escapeRegExp: function(str){
      // From MooTools core 1.2.4
      return str.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
    },

    insert: function(str, i, substr){
      var arr = _s.chars(str);
      arr.splice(~~i, 0, ''+substr);
      return arr.join('');
    },

    include: function(str, needle){
      return !!~(''+str).indexOf(needle);
    },

    join: function() {
      var args = slice(arguments);
      return args.join(args.shift());
    },

    lines: function(str) {
      return (''+str).split("\n");
    },

    reverse: function(str){
      return _s.chars(str).reverse().join('');
    },

    splice: function(str, i, howmany, substr){
      var arr = _s.chars(str);
      arr.splice(~~i, ~~howmany, substr);
      return arr.join('');
    },

    startsWith: function(str, starts){
      str += ''; starts += '';
      return str.length >= starts.length && str.substring(0, starts.length) === starts;
    },

    endsWith: function(str, ends){
      str += ''; ends += '';
      return str.length >= ends.length && str.substring(str.length - ends.length) === ends;
    },

    succ: function(str){
      str += '';
      var arr = _s.chars(str);
      arr.splice(str.length-1, 1, String.fromCharCode(str.charCodeAt(str.length-1) + 1));
      return arr.join('');
    },

    titleize: function(str){
      return (''+str).replace(/\b./g, function(ch){ return ch.toUpperCase(); });
    },

    camelize: function(str){
      return _s.trim(str).replace(/[-_\s]+(.)?/g, function(match, chr){
        return chr && chr.toUpperCase();
      });
    },

    underscored: function(str){
      return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase();
    },

    dasherize: function(str){
      return _s.trim(str).replace(/[_\s]+/g, '-').replace(/([A-Z])/g, '-$1').replace(/-+/g, '-').toLowerCase();
    },

    classify: function(str){
      str += '';
      return _s.titleize(str.replace(/_/g, ' ')).replace(/\s/g, '')
    },

    humanize: function(str){
      return _s.capitalize(this.underscored(str).replace(/_id$/,'').replace(/_/g, ' '));
    },

    trim: function(str, characters){
      str += '';
      if (!characters && nativeTrim) { return nativeTrim.call(str); }
      characters = defaultToWhiteSpace(characters);
      return str.replace(new RegExp('\^' + characters + '+|' + characters + '+$', 'g'), '');
    },

    ltrim: function(str, characters){
      str += '';
      if (!characters && nativeTrimLeft) {
        return nativeTrimLeft.call(str);
      }
      characters = defaultToWhiteSpace(characters);
      return str.replace(new RegExp('^' + characters + '+'), '');
    },

    rtrim: function(str, characters){
      str += '';
      if (!characters && nativeTrimRight) {
        return nativeTrimRight.call(str);
      }
      characters = defaultToWhiteSpace(characters);
      return str.replace(new RegExp(characters + '+$'), '');
    },

    truncate: function(str, length, truncateStr){
      str += ''; truncateStr = truncateStr || '...';
      length = ~~length;
      return str.length > length ? str.slice(0, length) + truncateStr : str;
    },

    /**
     * _s.prune: a more elegant version of truncate
     * prune extra chars, never leaving a half-chopped word.
     * @author github.com/sergiokas
     */
    prune: function(str, length, pruneStr){
      str += ''; length = ~~length;
      pruneStr = pruneStr != null ? ''+pruneStr : '...';
      
      var pruned, borderChar, template = str.replace(/\W/g, function(ch){
        return (ch.toUpperCase() !== ch.toLowerCase()) ? 'A' : ' ';
      });
      
      borderChar = template.charAt(length);
      
      pruned = template.slice(0, length);
      
      // Check if we're in the middle of a word
      if (borderChar && borderChar.match(/\S/))
        pruned = pruned.replace(/\s\S+$/, '');
        
      pruned = _s.rtrim(pruned);
      
      return (pruned+pruneStr).length > str.length ? str : str.substring(0, pruned.length)+pruneStr;
    },

    words: function(str, delimiter) {
      return _s.trim(str, delimiter).split(delimiter || /\s+/);
    },

    pad: function(str, length, padStr, type) {
      str += '';
      
      var padlen  = 0;

      length = ~~length;
      
      if (!padStr) {
        padStr = ' ';
      } else if (padStr.length > 1) {
        padStr = padStr.charAt(0);
      }
      
      switch(type) {
        case 'right':
          padlen = (length - str.length);
          return str + strRepeat(padStr, padlen);
        case 'both':
          padlen = (length - str.length);
          return strRepeat(padStr, Math.ceil(padlen/2)) + 
                 str + 
                 strRepeat(padStr, Math.floor(padlen/2));
        default: // 'left'
          padlen = (length - str.length);
          return strRepeat(padStr, padlen) + str;
        }
    },

    lpad: function(str, length, padStr) {
      return _s.pad(str, length, padStr);
    },

    rpad: function(str, length, padStr) {
      return _s.pad(str, length, padStr, 'right');
    },

    lrpad: function(str, length, padStr) {
      return _s.pad(str, length, padStr, 'both');
    },

    sprintf: sprintf,

    vsprintf: function(fmt, argv){
      argv.unshift(fmt);
      return sprintf.apply(null, argv);
    },

    toNumber: function(str, decimals) {
      str += '';
      var num = parseNumber(parseNumber(str).toFixed(~~decimals));
      return num === 0 && !str.match(/^0+$/) ? Number.NaN : num;
    },

    strRight: function(str, sep){
      str += ''; sep = sep != null ? ''+sep : sep;
      var pos = !sep ? -1 : str.indexOf(sep);
      return ~pos ? str.slice(pos+sep.length, str.length) : str;
    },

    strRightBack: function(str, sep){
      str += ''; sep = sep != null ? ''+sep : sep;
      var pos = !sep ? -1 : str.lastIndexOf(sep);
      return ~pos ? str.slice(pos+sep.length, str.length) : str;
    },

    strLeft: function(str, sep){
      str += ''; sep = sep != null ? ''+sep : sep;
      var pos = !sep ? -1 : str.indexOf(sep);
      return ~pos ? str.slice(0, pos) : str;
    },

    strLeftBack: function(str, sep){
      str += ''; sep = sep != null ? ''+sep : sep;
      var pos = str.lastIndexOf(sep);
      return ~pos ? str.slice(0, pos) : str;
    },

    toSentence: function(array, separator, lastSeparator) {
        separator || (separator = ', ');
        lastSeparator || (lastSeparator = ' and ');
        var length = array.length, str = '';

        for (var i = 0; i < length; i++) {
            str += array[i];
            if (i === (length - 2)) { str += lastSeparator; }
            else if (i < (length - 1)) { str += separator; }
        }

        return str;
    },

    slugify: function(str) {
      var from  = "ąàáäâãćęèéëêìíïîłńòóöôõùúüûñçżź",
          to    = "aaaaaaceeeeeiiiilnooooouuuunczz",
          regex = new RegExp(defaultToWhiteSpace(from), 'g');

      str = (''+str).toLowerCase();

      str = str.replace(regex, function(ch){
        var index = from.indexOf(ch);
        return to.charAt(index) || '-';
      });

      return _s.trim(str.replace(/[^\w\s-]/g, '').replace(/[-\s]+/g, '-'), '-');
    },

    exports: function() {
      var result = {};

      for (var prop in this) {
        if (!this.hasOwnProperty(prop) || ~['include', 'contains', 'reverse'].indexOf(prop)) continue;
        result[prop] = this[prop];
      }

      return result;
    },
    
    repeat: strRepeat
  };

  // Aliases

  _s.strip    = _s.trim;
  _s.lstrip   = _s.ltrim;
  _s.rstrip   = _s.rtrim;
  _s.center   = _s.lrpad;
  _s.rjust    = _s.lpad;
  _s.ljust    = _s.rpad;
  _s.contains = _s.include;

  // CommonJS module is defined
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      // Export module
      module.exports = _s;
    }
    exports._s = _s;

  } else if (typeof define === 'function' && define.amd) {
    // Register as a named module with AMD.
    define('underscore.string', function() {
      return _s;
    });
    
  } else {
    // Integrate with Underscore.js if defined
    // or create our own underscore object.
    root._ = root._ || {};
    root._.string = root._.str = _s;
  }

}(this);;/* 
 * vim: filetype=javascript
 */
var _ = window._;
;// ┌────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël 2.1.0 - JavaScript Vector Library                          │ \\
// ├────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright © 2008-2012 Dmitry Baranovskiy (http://raphaeljs.com)    │ \\
// │ Copyright © 2008-2012 Sencha Labs (http://sencha.com)              │ \\
// ├────────────────────────────────────────────────────────────────────┤ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license.│ \\
// └────────────────────────────────────────────────────────────────────┘ \\

// ┌──────────────────────────────────────────────────────────────────────────────────────┐ \\
// │ Eve 0.3.4 - JavaScript Events Library                                                │ \\
// ├──────────────────────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright (c) 2008-2011 Dmitry Baranovskiy (http://dmitry.baranovskiy.com/)          │ \\
// │ Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) license. │ \\
// └──────────────────────────────────────────────────────────────────────────────────────┘ \\

(function (glob) {
    var version = "0.3.4",
        has = "hasOwnProperty",
        separator = /[\.\/]/,
        wildcard = "*",
        fun = function () {},
        numsort = function (a, b) {
            return a - b;
        },
        current_event,
        stop,
        events = {n: {}},
    
        eve = function (name, scope) {
            var e = events,
                oldstop = stop,
                args = Array.prototype.slice.call(arguments, 2),
                listeners = eve.listeners(name),
                z = 0,
                f = false,
                l,
                indexed = [],
                queue = {},
                out = [],
                ce = current_event,
                errors = [];
            current_event = name;
            stop = 0;
            for (var i = 0, ii = listeners.length; i < ii; i++) if ("zIndex" in listeners[i]) {
                indexed.push(listeners[i].zIndex);
                if (listeners[i].zIndex < 0) {
                    queue[listeners[i].zIndex] = listeners[i];
                }
            }
            indexed.sort(numsort);
            while (indexed[z] < 0) {
                l = queue[indexed[z++]];
                out.push(l.apply(scope, args));
                if (stop) {
                    stop = oldstop;
                    return out;
                }
            }
            for (i = 0; i < ii; i++) {
                l = listeners[i];
                if ("zIndex" in l) {
                    if (l.zIndex == indexed[z]) {
                        out.push(l.apply(scope, args));
                        if (stop) {
                            break;
                        }
                        do {
                            z++;
                            l = queue[indexed[z]];
                            l && out.push(l.apply(scope, args));
                            if (stop) {
                                break;
                            }
                        } while (l)
                    } else {
                        queue[l.zIndex] = l;
                    }
                } else {
                    out.push(l.apply(scope, args));
                    if (stop) {
                        break;
                    }
                }
            }
            stop = oldstop;
            current_event = ce;
            return out.length ? out : null;
        };
    
    eve.listeners = function (name) {
        var names = name.split(separator),
            e = events,
            item,
            items,
            k,
            i,
            ii,
            j,
            jj,
            nes,
            es = [e],
            out = [];
        for (i = 0, ii = names.length; i < ii; i++) {
            nes = [];
            for (j = 0, jj = es.length; j < jj; j++) {
                e = es[j].n;
                items = [e[names[i]], e[wildcard]];
                k = 2;
                while (k--) {
                    item = items[k];
                    if (item) {
                        nes.push(item);
                        out = out.concat(item.f || []);
                    }
                }
            }
            es = nes;
        }
        return out;
    };
    
    
    eve.on = function (name, f) {
        var names = name.split(separator),
            e = events;
        for (var i = 0, ii = names.length; i < ii; i++) {
            e = e.n;
            !e[names[i]] && (e[names[i]] = {n: {}});
            e = e[names[i]];
        }
        e.f = e.f || [];
        for (i = 0, ii = e.f.length; i < ii; i++) if (e.f[i] == f) {
            return fun;
        }
        e.f.push(f);
        return function (zIndex) {
            if (+zIndex == +zIndex) {
                f.zIndex = +zIndex;
            }
        };
    };
    
    eve.stop = function () {
        stop = 1;
    };
    
    eve.nt = function (subname) {
        if (subname) {
            return new RegExp("(?:\\.|\\/|^)" + subname + "(?:\\.|\\/|$)").test(current_event);
        }
        return current_event;
    };
    
    
    eve.off = eve.unbind = function (name, f) {
        var names = name.split(separator),
            e,
            key,
            splice,
            i, ii, j, jj,
            cur = [events];
        for (i = 0, ii = names.length; i < ii; i++) {
            for (j = 0; j < cur.length; j += splice.length - 2) {
                splice = [j, 1];
                e = cur[j].n;
                if (names[i] != wildcard) {
                    if (e[names[i]]) {
                        splice.push(e[names[i]]);
                    }
                } else {
                    for (key in e) if (e[has](key)) {
                        splice.push(e[key]);
                    }
                }
                cur.splice.apply(cur, splice);
            }
        }
        for (i = 0, ii = cur.length; i < ii; i++) {
            e = cur[i];
            while (e.n) {
                if (f) {
                    if (e.f) {
                        for (j = 0, jj = e.f.length; j < jj; j++) if (e.f[j] == f) {
                            e.f.splice(j, 1);
                            break;
                        }
                        !e.f.length && delete e.f;
                    }
                    for (key in e.n) if (e.n[has](key) && e.n[key].f) {
                        var funcs = e.n[key].f;
                        for (j = 0, jj = funcs.length; j < jj; j++) if (funcs[j] == f) {
                            funcs.splice(j, 1);
                            break;
                        }
                        !funcs.length && delete e.n[key].f;
                    }
                } else {
                    delete e.f;
                    for (key in e.n) if (e.n[has](key) && e.n[key].f) {
                        delete e.n[key].f;
                    }
                }
                e = e.n;
            }
        }
    };
    
    eve.once = function (name, f) {
        var f2 = function () {
            var res = f.apply(this, arguments);
            eve.unbind(name, f2);
            return res;
        };
        return eve.on(name, f2);
    };
    
    eve.version = version;
    eve.toString = function () {
        return "You are running Eve " + version;
    };
    (typeof module != "undefined" && module.exports) ? (module.exports = eve) : (typeof define != "undefined" ? (define("eve", [], function() { return eve; })) : (glob.eve = eve));
})(this);


// ┌─────────────────────────────────────────────────────────────────────┐ \\
// │ "Raphaël 2.1.0" - JavaScript Vector Library                         │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright (c) 2008-2011 Dmitry Baranovskiy (http://raphaeljs.com)   │ \\
// │ Copyright (c) 2008-2011 Sencha Labs (http://sencha.com)             │ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license. │ \\
// └─────────────────────────────────────────────────────────────────────┘ \\
(function () {
    
    function R(first) {
        if (R.is(first, "function")) {
            return loaded ? first() : eve.on("raphael.DOMload", first);
        } else if (R.is(first, array)) {
            return R._engine.create[apply](R, first.splice(0, 3 + R.is(first[0], nu))).add(first);
        } else {
            var args = Array.prototype.slice.call(arguments, 0);
            if (R.is(args[args.length - 1], "function")) {
                var f = args.pop();
                return loaded ? f.call(R._engine.create[apply](R, args)) : eve.on("raphael.DOMload", function () {
                    f.call(R._engine.create[apply](R, args));
                });
            } else {
                return R._engine.create[apply](R, arguments);
            }
        }
    }
    R.version = "2.1.0";
    R.eve = eve;
    var loaded,
        separator = /[, ]+/,
        elements = {circle: 1, rect: 1, path: 1, ellipse: 1, text: 1, image: 1},
        formatrg = /\{(\d+)\}/g,
        proto = "prototype",
        has = "hasOwnProperty",
        g = {
            doc: document,
            win: window
        },
        oldRaphael = {
            was: Object.prototype[has].call(g.win, "Raphael"),
            is: g.win.Raphael
        },
        Paper = function () {
            
            
            this.ca = this.customAttributes = {};
        },
        paperproto,
        appendChild = "appendChild",
        apply = "apply",
        concat = "concat",
        supportsTouch = "createTouch" in g.doc,
        E = "",
        S = " ",
        Str = String,
        split = "split",
        events = "click dblclick mousedown mousemove mouseout mouseover mouseup touchstart touchmove touchend touchcancel"[split](S),
        touchMap = {
            mousedown: "touchstart",
            mousemove: "touchmove",
            mouseup: "touchend"
        },
        lowerCase = Str.prototype.toLowerCase,
        math = Math,
        mmax = math.max,
        mmin = math.min,
        abs = math.abs,
        pow = math.pow,
        PI = math.PI,
        nu = "number",
        string = "string",
        array = "array",
        toString = "toString",
        fillString = "fill",
        objectToString = Object.prototype.toString,
        paper = {},
        push = "push",
        ISURL = R._ISURL = /^url\(['"]?([^\)]+?)['"]?\)$/i,
        colourRegExp = /^\s*((#[a-f\d]{6})|(#[a-f\d]{3})|rgba?\(\s*([\d\.]+%?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+%?(?:\s*,\s*[\d\.]+%?)?)\s*\)|hsba?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?)%?\s*\)|hsla?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?)%?\s*\))\s*$/i,
        isnan = {"NaN": 1, "Infinity": 1, "-Infinity": 1},
        bezierrg = /^(?:cubic-)?bezier\(([^,]+),([^,]+),([^,]+),([^\)]+)\)/,
        round = math.round,
        setAttribute = "setAttribute",
        toFloat = parseFloat,
        toInt = parseInt,
        upperCase = Str.prototype.toUpperCase,
        availableAttrs = R._availableAttrs = {
            "arrow-end": "none",
            "arrow-start": "none",
            blur: 0,
            "clip-rect": "0 0 1e9 1e9",
            cursor: "default",
            cx: 0,
            cy: 0,
            fill: "#fff",
            "fill-opacity": 1,
            font: '10px "Arial"',
            "font-family": '"Arial"',
            "font-size": "10",
            "font-style": "normal",
            "font-weight": 400,
            gradient: 0,
            height: 0,
            href: "http://raphaeljs.com/",
            "letter-spacing": 0,
            opacity: 1,
            path: "M0,0",
            r: 0,
            rx: 0,
            ry: 0,
            src: "",
            stroke: "#000",
            "stroke-dasharray": "",
            "stroke-linecap": "butt",
            "stroke-linejoin": "butt",
            "stroke-miterlimit": 0,
            "stroke-opacity": 1,
            "stroke-width": 1,
            target: "_blank",
            "text-anchor": "middle",
            title: "Raphael",
            transform: "",
            width: 0,
            x: 0,
            y: 0
        },
        availableAnimAttrs = R._availableAnimAttrs = {
            blur: nu,
            "clip-rect": "csv",
            cx: nu,
            cy: nu,
            fill: "colour",
            "fill-opacity": nu,
            "font-size": nu,
            height: nu,
            opacity: nu,
            path: "path",
            r: nu,
            rx: nu,
            ry: nu,
            stroke: "colour",
            "stroke-opacity": nu,
            "stroke-width": nu,
            transform: "transform",
            width: nu,
            x: nu,
            y: nu
        },
        whitespace = /[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]/g,
        commaSpaces = /[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*/,
        hsrg = {hs: 1, rg: 1},
        p2s = /,?([achlmqrstvxz]),?/gi,
        pathCommand = /([achlmrqstvz])[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*)+)/ig,
        tCommand = /([rstm])[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*)+)/ig,
        pathValues = /(-?\d*\.?\d*(?:e[\-+]?\d+)?)[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*/ig,
        radial_gradient = R._radial_gradient = /^r(?:\(([^,]+?)[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*([^\)]+?)\))?/,
        eldata = {},
        sortByKey = function (a, b) {
            return a.key - b.key;
        },
        sortByNumber = function (a, b) {
            return toFloat(a) - toFloat(b);
        },
        fun = function () {},
        pipe = function (x) {
            return x;
        },
        rectPath = R._rectPath = function (x, y, w, h, r) {
            if (r) {
                return [["M", x + r, y], ["l", w - r * 2, 0], ["a", r, r, 0, 0, 1, r, r], ["l", 0, h - r * 2], ["a", r, r, 0, 0, 1, -r, r], ["l", r * 2 - w, 0], ["a", r, r, 0, 0, 1, -r, -r], ["l", 0, r * 2 - h], ["a", r, r, 0, 0, 1, r, -r], ["z"]];
            }
            return [["M", x, y], ["l", w, 0], ["l", 0, h], ["l", -w, 0], ["z"]];
        },
        ellipsePath = function (x, y, rx, ry) {
            if (ry == null) {
                ry = rx;
            }
            return [["M", x, y], ["m", 0, -ry], ["a", rx, ry, 0, 1, 1, 0, 2 * ry], ["a", rx, ry, 0, 1, 1, 0, -2 * ry], ["z"]];
        },
        getPath = R._getPath = {
            path: function (el) {
                return el.attr("path");
            },
            circle: function (el) {
                var a = el.attrs;
                return ellipsePath(a.cx, a.cy, a.r);
            },
            ellipse: function (el) {
                var a = el.attrs;
                return ellipsePath(a.cx, a.cy, a.rx, a.ry);
            },
            rect: function (el) {
                var a = el.attrs;
                return rectPath(a.x, a.y, a.width, a.height, a.r);
            },
            image: function (el) {
                var a = el.attrs;
                return rectPath(a.x, a.y, a.width, a.height);
            },
            text: function (el) {
                var bbox = el._getBBox();
                return rectPath(bbox.x, bbox.y, bbox.width, bbox.height);
            }
        },
        
        mapPath = R.mapPath = function (path, matrix) {
            if (!matrix) {
                return path;
            }
            var x, y, i, j, ii, jj, pathi;
            path = path2curve(path);
            for (i = 0, ii = path.length; i < ii; i++) {
                pathi = path[i];
                for (j = 1, jj = pathi.length; j < jj; j += 2) {
                    x = matrix.x(pathi[j], pathi[j + 1]);
                    y = matrix.y(pathi[j], pathi[j + 1]);
                    pathi[j] = x;
                    pathi[j + 1] = y;
                }
            }
            return path;
        };

    R._g = g;
    
    R.type = (g.win.SVGAngle || g.doc.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure", "1.1") ? "SVG" : "VML");
    if (R.type == "VML") {
        var d = g.doc.createElement("div"),
            b;
        d.innerHTML = '<v:shape adj="1"/>';
        b = d.firstChild;
        b.style.behavior = "url(#default#VML)";
        if (!(b && typeof b.adj == "object")) {
            return (R.type = E);
        }
        d = null;
    }
    
    
    R.svg = !(R.vml = R.type == "VML");
    R._Paper = Paper;
    
    R.fn = paperproto = Paper.prototype = R.prototype;
    R._id = 0;
    R._oid = 0;
    
    R.is = function (o, type) {
        type = lowerCase.call(type);
        if (type == "finite") {
            return !isnan[has](+o);
        }
        if (type == "array") {
            return o instanceof Array;
        }
        return  (type == "null" && o === null) ||
                (type == typeof o && o !== null) ||
                (type == "object" && o === Object(o)) ||
                (type == "array" && Array.isArray && Array.isArray(o)) ||
                objectToString.call(o).slice(8, -1).toLowerCase() == type;
    };

    function clone(obj) {
        if (Object(obj) !== obj) {
            return obj;
        }
        var res = new obj.constructor;
        for (var key in obj) if (obj[has](key)) {
            res[key] = clone(obj[key]);
        }
        return res;
    }

    
    R.angle = function (x1, y1, x2, y2, x3, y3) {
        if (x3 == null) {
            var x = x1 - x2,
                y = y1 - y2;
            if (!x && !y) {
                return 0;
            }
            return (180 + math.atan2(-y, -x) * 180 / PI + 360) % 360;
        } else {
            return R.angle(x1, y1, x3, y3) - R.angle(x2, y2, x3, y3);
        }
    };
    
    R.rad = function (deg) {
        return deg % 360 * PI / 180;
    };
    
    R.deg = function (rad) {
        return rad * 180 / PI % 360;
    };
    
    R.snapTo = function (values, value, tolerance) {
        tolerance = R.is(tolerance, "finite") ? tolerance : 10;
        if (R.is(values, array)) {
            var i = values.length;
            while (i--) if (abs(values[i] - value) <= tolerance) {
                return values[i];
            }
        } else {
            values = +values;
            var rem = value % values;
            if (rem < tolerance) {
                return value - rem;
            }
            if (rem > values - tolerance) {
                return value - rem + values;
            }
        }
        return value;
    };
    
    
    var createUUID = R.createUUID = (function (uuidRegEx, uuidReplacer) {
        return function () {
            return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(uuidRegEx, uuidReplacer).toUpperCase();
        };
    })(/[xy]/g, function (c) {
        var r = math.random() * 16 | 0,
            v = c == "x" ? r : (r & 3 | 8);
        return v.toString(16);
    });

    
    R.setWindow = function (newwin) {
        eve("raphael.setWindow", R, g.win, newwin);
        g.win = newwin;
        g.doc = g.win.document;
        if (R._engine.initWin) {
            R._engine.initWin(g.win);
        }
    };
    var toHex = function (color) {
        if (R.vml) {
            // http://dean.edwards.name/weblog/2009/10/convert-any-colour-value-to-hex-in-msie/
            var trim = /^\s+|\s+$/g;
            var bod;
            try {
                var docum = new ActiveXObject("htmlfile");
                docum.write("<body>");
                docum.close();
                bod = docum.body;
            } catch(e) {
                bod = createPopup().document.body;
            }
            var range = bod.createTextRange();
            toHex = cacher(function (color) {
                try {
                    bod.style.color = Str(color).replace(trim, E);
                    var value = range.queryCommandValue("ForeColor");
                    value = ((value & 255) << 16) | (value & 65280) | ((value & 16711680) >>> 16);
                    return "#" + ("000000" + value.toString(16)).slice(-6);
                } catch(e) {
                    return "none";
                }
            });
        } else {
            var i = g.doc.createElement("i");
            i.title = "Rapha\xebl Colour Picker";
            i.style.display = "none";
            g.doc.body.appendChild(i);
            toHex = cacher(function (color) {
                i.style.color = color;
                return g.doc.defaultView.getComputedStyle(i, E).getPropertyValue("color");
            });
        }
        return toHex(color);
    },
    hsbtoString = function () {
        return "hsb(" + [this.h, this.s, this.b] + ")";
    },
    hsltoString = function () {
        return "hsl(" + [this.h, this.s, this.l] + ")";
    },
    rgbtoString = function () {
        return this.hex;
    },
    prepareRGB = function (r, g, b) {
        if (g == null && R.is(r, "object") && "r" in r && "g" in r && "b" in r) {
            b = r.b;
            g = r.g;
            r = r.r;
        }
        if (g == null && R.is(r, string)) {
            var clr = R.getRGB(r);
            r = clr.r;
            g = clr.g;
            b = clr.b;
        }
        if (r > 1 || g > 1 || b > 1) {
            r /= 255;
            g /= 255;
            b /= 255;
        }
        
        return [r, g, b];
    },
    packageRGB = function (r, g, b, o) {
        r *= 255;
        g *= 255;
        b *= 255;
        var rgb = {
            r: r,
            g: g,
            b: b,
            hex: R.rgb(r, g, b),
            toString: rgbtoString
        };
        R.is(o, "finite") && (rgb.opacity = o);
        return rgb;
    };
    
    
    R.color = function (clr) {
        var rgb;
        if (R.is(clr, "object") && "h" in clr && "s" in clr && "b" in clr) {
            rgb = R.hsb2rgb(clr);
            clr.r = rgb.r;
            clr.g = rgb.g;
            clr.b = rgb.b;
            clr.hex = rgb.hex;
        } else if (R.is(clr, "object") && "h" in clr && "s" in clr && "l" in clr) {
            rgb = R.hsl2rgb(clr);
            clr.r = rgb.r;
            clr.g = rgb.g;
            clr.b = rgb.b;
            clr.hex = rgb.hex;
        } else {
            if (R.is(clr, "string")) {
                clr = R.getRGB(clr);
            }
            if (R.is(clr, "object") && "r" in clr && "g" in clr && "b" in clr) {
                rgb = R.rgb2hsl(clr);
                clr.h = rgb.h;
                clr.s = rgb.s;
                clr.l = rgb.l;
                rgb = R.rgb2hsb(clr);
                clr.v = rgb.b;
            } else {
                clr = {hex: "none"};
                clr.r = clr.g = clr.b = clr.h = clr.s = clr.v = clr.l = -1;
            }
        }
        clr.toString = rgbtoString;
        return clr;
    };
    
    R.hsb2rgb = function (h, s, v, o) {
        if (this.is(h, "object") && "h" in h && "s" in h && "b" in h) {
            v = h.b;
            s = h.s;
            h = h.h;
            o = h.o;
        }
        h *= 360;
        var R, G, B, X, C;
        h = (h % 360) / 60;
        C = v * s;
        X = C * (1 - abs(h % 2 - 1));
        R = G = B = v - C;

        h = ~~h;
        R += [C, X, 0, 0, X, C][h];
        G += [X, C, C, X, 0, 0][h];
        B += [0, 0, X, C, C, X][h];
        return packageRGB(R, G, B, o);
    };
    
    R.hsl2rgb = function (h, s, l, o) {
        if (this.is(h, "object") && "h" in h && "s" in h && "l" in h) {
            l = h.l;
            s = h.s;
            h = h.h;
        }
        if (h > 1 || s > 1 || l > 1) {
            h /= 360;
            s /= 100;
            l /= 100;
        }
        h *= 360;
        var R, G, B, X, C;
        h = (h % 360) / 60;
        C = 2 * s * (l < .5 ? l : 1 - l);
        X = C * (1 - abs(h % 2 - 1));
        R = G = B = l - C / 2;

        h = ~~h;
        R += [C, X, 0, 0, X, C][h];
        G += [X, C, C, X, 0, 0][h];
        B += [0, 0, X, C, C, X][h];
        return packageRGB(R, G, B, o);
    };
    
    R.rgb2hsb = function (r, g, b) {
        b = prepareRGB(r, g, b);
        r = b[0];
        g = b[1];
        b = b[2];

        var H, S, V, C;
        V = mmax(r, g, b);
        C = V - mmin(r, g, b);
        H = (C == 0 ? null :
             V == r ? (g - b) / C :
             V == g ? (b - r) / C + 2 :
                      (r - g) / C + 4
            );
        H = ((H + 360) % 6) * 60 / 360;
        S = C == 0 ? 0 : C / V;
        return {h: H, s: S, b: V, toString: hsbtoString};
    };
    
    R.rgb2hsl = function (r, g, b) {
        b = prepareRGB(r, g, b);
        r = b[0];
        g = b[1];
        b = b[2];

        var H, S, L, M, m, C;
        M = mmax(r, g, b);
        m = mmin(r, g, b);
        C = M - m;
        H = (C == 0 ? null :
             M == r ? (g - b) / C :
             M == g ? (b - r) / C + 2 :
                      (r - g) / C + 4);
        H = ((H + 360) % 6) * 60 / 360;
        L = (M + m) / 2;
        S = (C == 0 ? 0 :
             L < .5 ? C / (2 * L) :
                      C / (2 - 2 * L));
        return {h: H, s: S, l: L, toString: hsltoString};
    };
    R._path2string = function () {
        return this.join(",").replace(p2s, "$1");
    };
    function repush(array, item) {
        for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
            return array.push(array.splice(i, 1)[0]);
        }
    }
    function cacher(f, scope, postprocessor) {
        function newf() {
            var arg = Array.prototype.slice.call(arguments, 0),
                args = arg.join("\u2400"),
                cache = newf.cache = newf.cache || {},
                count = newf.count = newf.count || [];
            if (cache[has](args)) {
                repush(count, args);
                return postprocessor ? postprocessor(cache[args]) : cache[args];
            }
            count.length >= 1e3 && delete cache[count.shift()];
            count.push(args);
            cache[args] = f[apply](scope, arg);
            return postprocessor ? postprocessor(cache[args]) : cache[args];
        }
        return newf;
    }

    var preload = R._preload = function (src, f) {
        var img = g.doc.createElement("img");
        img.style.cssText = "position:absolute;left:-9999em;top:-9999em";
        img.onload = function () {
            f.call(this);
            this.onload = null;
            g.doc.body.removeChild(this);
        };
        img.onerror = function () {
            g.doc.body.removeChild(this);
        };
        g.doc.body.appendChild(img);
        img.src = src;
    };
    
    function clrToString() {
        return this.hex;
    }

    
    R.getRGB = cacher(function (colour) {
        if (!colour || !!((colour = Str(colour)).indexOf("-") + 1)) {
            return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: clrToString};
        }
        if (colour == "none") {
            return {r: -1, g: -1, b: -1, hex: "none", toString: clrToString};
        }
        !(hsrg[has](colour.toLowerCase().substring(0, 2)) || colour.charAt() == "#") && (colour = toHex(colour));
        var res,
            red,
            green,
            blue,
            opacity,
            t,
            values,
            rgb = colour.match(colourRegExp);
        if (rgb) {
            if (rgb[2]) {
                blue = toInt(rgb[2].substring(5), 16);
                green = toInt(rgb[2].substring(3, 5), 16);
                red = toInt(rgb[2].substring(1, 3), 16);
            }
            if (rgb[3]) {
                blue = toInt((t = rgb[3].charAt(3)) + t, 16);
                green = toInt((t = rgb[3].charAt(2)) + t, 16);
                red = toInt((t = rgb[3].charAt(1)) + t, 16);
            }
            if (rgb[4]) {
                values = rgb[4][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                rgb[1].toLowerCase().slice(0, 4) == "rgba" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
            }
            if (rgb[5]) {
                values = rgb[5][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                rgb[1].toLowerCase().slice(0, 4) == "hsba" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                return R.hsb2rgb(red, green, blue, opacity);
            }
            if (rgb[6]) {
                values = rgb[6][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                rgb[1].toLowerCase().slice(0, 4) == "hsla" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                return R.hsl2rgb(red, green, blue, opacity);
            }
            rgb = {r: red, g: green, b: blue, toString: clrToString};
            rgb.hex = "#" + (16777216 | blue | (green << 8) | (red << 16)).toString(16).slice(1);
            R.is(opacity, "finite") && (rgb.opacity = opacity);
            return rgb;
        }
        return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: clrToString};
    }, R);
    
    R.hsb = cacher(function (h, s, b) {
        return R.hsb2rgb(h, s, b).hex;
    });
    
    R.hsl = cacher(function (h, s, l) {
        return R.hsl2rgb(h, s, l).hex;
    });
    
    R.rgb = cacher(function (r, g, b) {
        return "#" + (16777216 | b | (g << 8) | (r << 16)).toString(16).slice(1);
    });
    
    R.getColor = function (value) {
        var start = this.getColor.start = this.getColor.start || {h: 0, s: 1, b: value || .75},
            rgb = this.hsb2rgb(start.h, start.s, start.b);
        start.h += .075;
        if (start.h > 1) {
            start.h = 0;
            start.s -= .2;
            start.s <= 0 && (this.getColor.start = {h: 0, s: 1, b: start.b});
        }
        return rgb.hex;
    };
    
    R.getColor.reset = function () {
        delete this.start;
    };

    // http://schepers.cc/getting-to-the-point
    function catmullRom2bezier(crp, z) {
        var d = [];
        for (var i = 0, iLen = crp.length; iLen - 2 * !z > i; i += 2) {
            var p = [
                        {x: +crp[i - 2], y: +crp[i - 1]},
                        {x: +crp[i],     y: +crp[i + 1]},
                        {x: +crp[i + 2], y: +crp[i + 3]},
                        {x: +crp[i + 4], y: +crp[i + 5]}
                    ];
            if (z) {
                if (!i) {
                    p[0] = {x: +crp[iLen - 2], y: +crp[iLen - 1]};
                } else if (iLen - 4 == i) {
                    p[3] = {x: +crp[0], y: +crp[1]};
                } else if (iLen - 2 == i) {
                    p[2] = {x: +crp[0], y: +crp[1]};
                    p[3] = {x: +crp[2], y: +crp[3]};
                }
            } else {
                if (iLen - 4 == i) {
                    p[3] = p[2];
                } else if (!i) {
                    p[0] = {x: +crp[i], y: +crp[i + 1]};
                }
            }
            d.push(["C",
                  (-p[0].x + 6 * p[1].x + p[2].x) / 6,
                  (-p[0].y + 6 * p[1].y + p[2].y) / 6,
                  (p[1].x + 6 * p[2].x - p[3].x) / 6,
                  (p[1].y + 6*p[2].y - p[3].y) / 6,
                  p[2].x,
                  p[2].y
            ]);
        }

        return d;
    }
    
    R.parsePathString = function (pathString) {
        if (!pathString) {
            return null;
        }
        var pth = paths(pathString);
        if (pth.arr) {
            return pathClone(pth.arr);
        }
        
        var paramCounts = {a: 7, c: 6, h: 1, l: 2, m: 2, r: 4, q: 4, s: 4, t: 2, v: 1, z: 0},
            data = [];
        if (R.is(pathString, array) && R.is(pathString[0], array)) { // rough assumption
            data = pathClone(pathString);
        }
        if (!data.length) {
            Str(pathString).replace(pathCommand, function (a, b, c) {
                var params = [],
                    name = b.toLowerCase();
                c.replace(pathValues, function (a, b) {
                    b && params.push(+b);
                });
                if (name == "m" && params.length > 2) {
                    data.push([b][concat](params.splice(0, 2)));
                    name = "l";
                    b = b == "m" ? "l" : "L";
                }
                if (name == "r") {
                    data.push([b][concat](params));
                } else while (params.length >= paramCounts[name]) {
                    data.push([b][concat](params.splice(0, paramCounts[name])));
                    if (!paramCounts[name]) {
                        break;
                    }
                }
            });
        }
        data.toString = R._path2string;
        pth.arr = pathClone(data);
        return data;
    };
    
    R.parseTransformString = cacher(function (TString) {
        if (!TString) {
            return null;
        }
        var paramCounts = {r: 3, s: 4, t: 2, m: 6},
            data = [];
        if (R.is(TString, array) && R.is(TString[0], array)) { // rough assumption
            data = pathClone(TString);
        }
        if (!data.length) {
            Str(TString).replace(tCommand, function (a, b, c) {
                var params = [],
                    name = lowerCase.call(b);
                c.replace(pathValues, function (a, b) {
                    b && params.push(+b);
                });
                data.push([b][concat](params));
            });
        }
        data.toString = R._path2string;
        return data;
    });
    // PATHS
    var paths = function (ps) {
        var p = paths.ps = paths.ps || {};
        if (p[ps]) {
            p[ps].sleep = 100;
        } else {
            p[ps] = {
                sleep: 100
            };
        }
        setTimeout(function () {
            for (var key in p) if (p[has](key) && key != ps) {
                p[key].sleep--;
                !p[key].sleep && delete p[key];
            }
        });
        return p[ps];
    };
    
    R.findDotsAtSegment = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
        var t1 = 1 - t,
            t13 = pow(t1, 3),
            t12 = pow(t1, 2),
            t2 = t * t,
            t3 = t2 * t,
            x = t13 * p1x + t12 * 3 * t * c1x + t1 * 3 * t * t * c2x + t3 * p2x,
            y = t13 * p1y + t12 * 3 * t * c1y + t1 * 3 * t * t * c2y + t3 * p2y,
            mx = p1x + 2 * t * (c1x - p1x) + t2 * (c2x - 2 * c1x + p1x),
            my = p1y + 2 * t * (c1y - p1y) + t2 * (c2y - 2 * c1y + p1y),
            nx = c1x + 2 * t * (c2x - c1x) + t2 * (p2x - 2 * c2x + c1x),
            ny = c1y + 2 * t * (c2y - c1y) + t2 * (p2y - 2 * c2y + c1y),
            ax = t1 * p1x + t * c1x,
            ay = t1 * p1y + t * c1y,
            cx = t1 * c2x + t * p2x,
            cy = t1 * c2y + t * p2y,
            alpha = (90 - math.atan2(mx - nx, my - ny) * 180 / PI);
        (mx > nx || my < ny) && (alpha += 180);
        return {
            x: x,
            y: y,
            m: {x: mx, y: my},
            n: {x: nx, y: ny},
            start: {x: ax, y: ay},
            end: {x: cx, y: cy},
            alpha: alpha
        };
    };
    
    R.bezierBBox = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
        if (!R.is(p1x, "array")) {
            p1x = [p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y];
        }
        var bbox = curveDim.apply(null, p1x);
        return {
            x: bbox.min.x,
            y: bbox.min.y,
            x2: bbox.max.x,
            y2: bbox.max.y,
            width: bbox.max.x - bbox.min.x,
            height: bbox.max.y - bbox.min.y
        };
    };
    
    R.isPointInsideBBox = function (bbox, x, y) {
        return x >= bbox.x && x <= bbox.x2 && y >= bbox.y && y <= bbox.y2;
    };
    
    R.isBBoxIntersect = function (bbox1, bbox2) {
        var i = R.isPointInsideBBox;
        return i(bbox2, bbox1.x, bbox1.y)
            || i(bbox2, bbox1.x2, bbox1.y)
            || i(bbox2, bbox1.x, bbox1.y2)
            || i(bbox2, bbox1.x2, bbox1.y2)
            || i(bbox1, bbox2.x, bbox2.y)
            || i(bbox1, bbox2.x2, bbox2.y)
            || i(bbox1, bbox2.x, bbox2.y2)
            || i(bbox1, bbox2.x2, bbox2.y2)
            || (bbox1.x < bbox2.x2 && bbox1.x > bbox2.x || bbox2.x < bbox1.x2 && bbox2.x > bbox1.x)
            && (bbox1.y < bbox2.y2 && bbox1.y > bbox2.y || bbox2.y < bbox1.y2 && bbox2.y > bbox1.y);
    };
    function base3(t, p1, p2, p3, p4) {
        var t1 = -3 * p1 + 9 * p2 - 9 * p3 + 3 * p4,
            t2 = t * t1 + 6 * p1 - 12 * p2 + 6 * p3;
        return t * t2 - 3 * p1 + 3 * p2;
    }
    function bezlen(x1, y1, x2, y2, x3, y3, x4, y4, z) {
        if (z == null) {
            z = 1;
        }
        z = z > 1 ? 1 : z < 0 ? 0 : z;
        var z2 = z / 2,
            n = 12,
            Tvalues = [-0.1252,0.1252,-0.3678,0.3678,-0.5873,0.5873,-0.7699,0.7699,-0.9041,0.9041,-0.9816,0.9816],
            Cvalues = [0.2491,0.2491,0.2335,0.2335,0.2032,0.2032,0.1601,0.1601,0.1069,0.1069,0.0472,0.0472],
            sum = 0;
        for (var i = 0; i < n; i++) {
            var ct = z2 * Tvalues[i] + z2,
                xbase = base3(ct, x1, x2, x3, x4),
                ybase = base3(ct, y1, y2, y3, y4),
                comb = xbase * xbase + ybase * ybase;
            sum += Cvalues[i] * math.sqrt(comb);
        }
        return z2 * sum;
    }
    function getTatLen(x1, y1, x2, y2, x3, y3, x4, y4, ll) {
        if (ll < 0 || bezlen(x1, y1, x2, y2, x3, y3, x4, y4) < ll) {
            return;
        }
        var t = 1,
            step = t / 2,
            t2 = t - step,
            l,
            e = .01;
        l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
        while (abs(l - ll) > e) {
            step /= 2;
            t2 += (l < ll ? 1 : -1) * step;
            l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
        }
        return t2;
    }
    function intersect(x1, y1, x2, y2, x3, y3, x4, y4) {
        if (
            mmax(x1, x2) < mmin(x3, x4) ||
            mmin(x1, x2) > mmax(x3, x4) ||
            mmax(y1, y2) < mmin(y3, y4) ||
            mmin(y1, y2) > mmax(y3, y4)
        ) {
            return;
        }
        var nx = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4),
            ny = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4),
            denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);

        if (!denominator) {
            return;
        }
        var px = nx / denominator,
            py = ny / denominator,
            px2 = +px.toFixed(2),
            py2 = +py.toFixed(2);
        if (
            px2 < +mmin(x1, x2).toFixed(2) ||
            px2 > +mmax(x1, x2).toFixed(2) ||
            px2 < +mmin(x3, x4).toFixed(2) ||
            px2 > +mmax(x3, x4).toFixed(2) ||
            py2 < +mmin(y1, y2).toFixed(2) ||
            py2 > +mmax(y1, y2).toFixed(2) ||
            py2 < +mmin(y3, y4).toFixed(2) ||
            py2 > +mmax(y3, y4).toFixed(2)
        ) {
            return;
        }
        return {x: px, y: py};
    }
    function inter(bez1, bez2) {
        return interHelper(bez1, bez2);
    }
    function interCount(bez1, bez2) {
        return interHelper(bez1, bez2, 1);
    }
    function interHelper(bez1, bez2, justCount) {
        var bbox1 = R.bezierBBox(bez1),
            bbox2 = R.bezierBBox(bez2);
        if (!R.isBBoxIntersect(bbox1, bbox2)) {
            return justCount ? 0 : [];
        }
        var l1 = bezlen.apply(0, bez1),
            l2 = bezlen.apply(0, bez2),
            n1 = ~~(l1 / 5),
            n2 = ~~(l2 / 5),
            dots1 = [],
            dots2 = [],
            xy = {},
            res = justCount ? 0 : [];
        for (var i = 0; i < n1 + 1; i++) {
            var p = R.findDotsAtSegment.apply(R, bez1.concat(i / n1));
            dots1.push({x: p.x, y: p.y, t: i / n1});
        }
        for (i = 0; i < n2 + 1; i++) {
            p = R.findDotsAtSegment.apply(R, bez2.concat(i / n2));
            dots2.push({x: p.x, y: p.y, t: i / n2});
        }
        for (i = 0; i < n1; i++) {
            for (var j = 0; j < n2; j++) {
                var di = dots1[i],
                    di1 = dots1[i + 1],
                    dj = dots2[j],
                    dj1 = dots2[j + 1],
                    ci = abs(di1.x - di.x) < .001 ? "y" : "x",
                    cj = abs(dj1.x - dj.x) < .001 ? "y" : "x",
                    is = intersect(di.x, di.y, di1.x, di1.y, dj.x, dj.y, dj1.x, dj1.y);
                if (is) {
                    if (xy[is.x.toFixed(4)] == is.y.toFixed(4)) {
                        continue;
                    }
                    xy[is.x.toFixed(4)] = is.y.toFixed(4);
                    var t1 = di.t + abs((is[ci] - di[ci]) / (di1[ci] - di[ci])) * (di1.t - di.t),
                        t2 = dj.t + abs((is[cj] - dj[cj]) / (dj1[cj] - dj[cj])) * (dj1.t - dj.t);
                    if (t1 >= 0 && t1 <= 1 && t2 >= 0 && t2 <= 1) {
                        if (justCount) {
                            res++;
                        } else {
                            res.push({
                                x: is.x,
                                y: is.y,
                                t1: t1,
                                t2: t2
                            });
                        }
                    }
                }
            }
        }
        return res;
    }
    
    R.pathIntersection = function (path1, path2) {
        return interPathHelper(path1, path2);
    };
    R.pathIntersectionNumber = function (path1, path2) {
        return interPathHelper(path1, path2, 1);
    };
    function interPathHelper(path1, path2, justCount) {
        path1 = R._path2curve(path1);
        path2 = R._path2curve(path2);
        var x1, y1, x2, y2, x1m, y1m, x2m, y2m, bez1, bez2,
            res = justCount ? 0 : [];
        for (var i = 0, ii = path1.length; i < ii; i++) {
            var pi = path1[i];
            if (pi[0] == "M") {
                x1 = x1m = pi[1];
                y1 = y1m = pi[2];
            } else {
                if (pi[0] == "C") {
                    bez1 = [x1, y1].concat(pi.slice(1));
                    x1 = bez1[6];
                    y1 = bez1[7];
                } else {
                    bez1 = [x1, y1, x1, y1, x1m, y1m, x1m, y1m];
                    x1 = x1m;
                    y1 = y1m;
                }
                for (var j = 0, jj = path2.length; j < jj; j++) {
                    var pj = path2[j];
                    if (pj[0] == "M") {
                        x2 = x2m = pj[1];
                        y2 = y2m = pj[2];
                    } else {
                        if (pj[0] == "C") {
                            bez2 = [x2, y2].concat(pj.slice(1));
                            x2 = bez2[6];
                            y2 = bez2[7];
                        } else {
                            bez2 = [x2, y2, x2, y2, x2m, y2m, x2m, y2m];
                            x2 = x2m;
                            y2 = y2m;
                        }
                        var intr = interHelper(bez1, bez2, justCount);
                        if (justCount) {
                            res += intr;
                        } else {
                            for (var k = 0, kk = intr.length; k < kk; k++) {
                                intr[k].segment1 = i;
                                intr[k].segment2 = j;
                                intr[k].bez1 = bez1;
                                intr[k].bez2 = bez2;
                            }
                            res = res.concat(intr);
                        }
                    }
                }
            }
        }
        return res;
    }
    
    R.isPointInsidePath = function (path, x, y) {
        var bbox = R.pathBBox(path);
        return R.isPointInsideBBox(bbox, x, y) &&
               interPathHelper(path, [["M", x, y], ["H", bbox.x2 + 10]], 1) % 2 == 1;
    };
    R._removedFactory = function (methodname) {
        return function () {
            eve("raphael.log", null, "Rapha\xebl: you are calling to method \u201c" + methodname + "\u201d of removed object", methodname);
        };
    };
    
    var pathDimensions = R.pathBBox = function (path) {
        var pth = paths(path);
        if (pth.bbox) {
            return pth.bbox;
        }
        if (!path) {
            return {x: 0, y: 0, width: 0, height: 0, x2: 0, y2: 0};
        }
        path = path2curve(path);
        var x = 0, 
            y = 0,
            X = [],
            Y = [],
            p;
        for (var i = 0, ii = path.length; i < ii; i++) {
            p = path[i];
            if (p[0] == "M") {
                x = p[1];
                y = p[2];
                X.push(x);
                Y.push(y);
            } else {
                var dim = curveDim(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                X = X[concat](dim.min.x, dim.max.x);
                Y = Y[concat](dim.min.y, dim.max.y);
                x = p[5];
                y = p[6];
            }
        }
        var xmin = mmin[apply](0, X),
            ymin = mmin[apply](0, Y),
            xmax = mmax[apply](0, X),
            ymax = mmax[apply](0, Y),
            bb = {
                x: xmin,
                y: ymin,
                x2: xmax,
                y2: ymax,
                width: xmax - xmin,
                height: ymax - ymin
            };
        pth.bbox = clone(bb);
        return bb;
    },
        pathClone = function (pathArray) {
            var res = clone(pathArray);
            res.toString = R._path2string;
            return res;
        },
        pathToRelative = R._pathToRelative = function (pathArray) {
            var pth = paths(pathArray);
            if (pth.rel) {
                return pathClone(pth.rel);
            }
            if (!R.is(pathArray, array) || !R.is(pathArray && pathArray[0], array)) { // rough assumption
                pathArray = R.parsePathString(pathArray);
            }
            var res = [],
                x = 0,
                y = 0,
                mx = 0,
                my = 0,
                start = 0;
            if (pathArray[0][0] == "M") {
                x = pathArray[0][1];
                y = pathArray[0][2];
                mx = x;
                my = y;
                start++;
                res.push(["M", x, y]);
            }
            for (var i = start, ii = pathArray.length; i < ii; i++) {
                var r = res[i] = [],
                    pa = pathArray[i];
                if (pa[0] != lowerCase.call(pa[0])) {
                    r[0] = lowerCase.call(pa[0]);
                    switch (r[0]) {
                        case "a":
                            r[1] = pa[1];
                            r[2] = pa[2];
                            r[3] = pa[3];
                            r[4] = pa[4];
                            r[5] = pa[5];
                            r[6] = +(pa[6] - x).toFixed(3);
                            r[7] = +(pa[7] - y).toFixed(3);
                            break;
                        case "v":
                            r[1] = +(pa[1] - y).toFixed(3);
                            break;
                        case "m":
                            mx = pa[1];
                            my = pa[2];
                        default:
                            for (var j = 1, jj = pa.length; j < jj; j++) {
                                r[j] = +(pa[j] - ((j % 2) ? x : y)).toFixed(3);
                            }
                    }
                } else {
                    r = res[i] = [];
                    if (pa[0] == "m") {
                        mx = pa[1] + x;
                        my = pa[2] + y;
                    }
                    for (var k = 0, kk = pa.length; k < kk; k++) {
                        res[i][k] = pa[k];
                    }
                }
                var len = res[i].length;
                switch (res[i][0]) {
                    case "z":
                        x = mx;
                        y = my;
                        break;
                    case "h":
                        x += +res[i][len - 1];
                        break;
                    case "v":
                        y += +res[i][len - 1];
                        break;
                    default:
                        x += +res[i][len - 2];
                        y += +res[i][len - 1];
                }
            }
            res.toString = R._path2string;
            pth.rel = pathClone(res);
            return res;
        },
        pathToAbsolute = R._pathToAbsolute = function (pathArray) {
            var pth = paths(pathArray);
            if (pth.abs) {
                return pathClone(pth.abs);
            }
            if (!R.is(pathArray, array) || !R.is(pathArray && pathArray[0], array)) { // rough assumption
                pathArray = R.parsePathString(pathArray);
            }
            if (!pathArray || !pathArray.length) {
                return [["M", 0, 0]];
            }
            var res = [],
                x = 0,
                y = 0,
                mx = 0,
                my = 0,
                start = 0;
            if (pathArray[0][0] == "M") {
                x = +pathArray[0][1];
                y = +pathArray[0][2];
                mx = x;
                my = y;
                start++;
                res[0] = ["M", x, y];
            }
            var crz = pathArray.length == 3 && pathArray[0][0] == "M" && pathArray[1][0].toUpperCase() == "R" && pathArray[2][0].toUpperCase() == "Z";
            for (var r, pa, i = start, ii = pathArray.length; i < ii; i++) {
                res.push(r = []);
                pa = pathArray[i];
                if (pa[0] != upperCase.call(pa[0])) {
                    r[0] = upperCase.call(pa[0]);
                    switch (r[0]) {
                        case "A":
                            r[1] = pa[1];
                            r[2] = pa[2];
                            r[3] = pa[3];
                            r[4] = pa[4];
                            r[5] = pa[5];
                            r[6] = +(pa[6] + x);
                            r[7] = +(pa[7] + y);
                            break;
                        case "V":
                            r[1] = +pa[1] + y;
                            break;
                        case "H":
                            r[1] = +pa[1] + x;
                            break;
                        case "R":
                            var dots = [x, y][concat](pa.slice(1));
                            for (var j = 2, jj = dots.length; j < jj; j++) {
                                dots[j] = +dots[j] + x;
                                dots[++j] = +dots[j] + y;
                            }
                            res.pop();
                            res = res[concat](catmullRom2bezier(dots, crz));
                            break;
                        case "M":
                            mx = +pa[1] + x;
                            my = +pa[2] + y;
                        default:
                            for (j = 1, jj = pa.length; j < jj; j++) {
                                r[j] = +pa[j] + ((j % 2) ? x : y);
                            }
                    }
                } else if (pa[0] == "R") {
                    dots = [x, y][concat](pa.slice(1));
                    res.pop();
                    res = res[concat](catmullRom2bezier(dots, crz));
                    r = ["R"][concat](pa.slice(-2));
                } else {
                    for (var k = 0, kk = pa.length; k < kk; k++) {
                        r[k] = pa[k];
                    }
                }
                switch (r[0]) {
                    case "Z":
                        x = mx;
                        y = my;
                        break;
                    case "H":
                        x = r[1];
                        break;
                    case "V":
                        y = r[1];
                        break;
                    case "M":
                        mx = r[r.length - 2];
                        my = r[r.length - 1];
                    default:
                        x = r[r.length - 2];
                        y = r[r.length - 1];
                }
            }
            res.toString = R._path2string;
            pth.abs = pathClone(res);
            return res;
        },
        l2c = function (x1, y1, x2, y2) {
            return [x1, y1, x2, y2, x2, y2];
        },
        q2c = function (x1, y1, ax, ay, x2, y2) {
            var _13 = 1 / 3,
                _23 = 2 / 3;
            return [
                    _13 * x1 + _23 * ax,
                    _13 * y1 + _23 * ay,
                    _13 * x2 + _23 * ax,
                    _13 * y2 + _23 * ay,
                    x2,
                    y2
                ];
        },
        a2c = function (x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
            // for more information of where this math came from visit:
            // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
            var _120 = PI * 120 / 180,
                rad = PI / 180 * (+angle || 0),
                res = [],
                xy,
                rotate = cacher(function (x, y, rad) {
                    var X = x * math.cos(rad) - y * math.sin(rad),
                        Y = x * math.sin(rad) + y * math.cos(rad);
                    return {x: X, y: Y};
                });
            if (!recursive) {
                xy = rotate(x1, y1, -rad);
                x1 = xy.x;
                y1 = xy.y;
                xy = rotate(x2, y2, -rad);
                x2 = xy.x;
                y2 = xy.y;
                var cos = math.cos(PI / 180 * angle),
                    sin = math.sin(PI / 180 * angle),
                    x = (x1 - x2) / 2,
                    y = (y1 - y2) / 2;
                var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
                if (h > 1) {
                    h = math.sqrt(h);
                    rx = h * rx;
                    ry = h * ry;
                }
                var rx2 = rx * rx,
                    ry2 = ry * ry,
                    k = (large_arc_flag == sweep_flag ? -1 : 1) *
                        math.sqrt(abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
                    cx = k * rx * y / ry + (x1 + x2) / 2,
                    cy = k * -ry * x / rx + (y1 + y2) / 2,
                    f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
                    f2 = math.asin(((y2 - cy) / ry).toFixed(9));

                f1 = x1 < cx ? PI - f1 : f1;
                f2 = x2 < cx ? PI - f2 : f2;
                f1 < 0 && (f1 = PI * 2 + f1);
                f2 < 0 && (f2 = PI * 2 + f2);
                if (sweep_flag && f1 > f2) {
                    f1 = f1 - PI * 2;
                }
                if (!sweep_flag && f2 > f1) {
                    f2 = f2 - PI * 2;
                }
            } else {
                f1 = recursive[0];
                f2 = recursive[1];
                cx = recursive[2];
                cy = recursive[3];
            }
            var df = f2 - f1;
            if (abs(df) > _120) {
                var f2old = f2,
                    x2old = x2,
                    y2old = y2;
                f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
                x2 = cx + rx * math.cos(f2);
                y2 = cy + ry * math.sin(f2);
                res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
            }
            df = f2 - f1;
            var c1 = math.cos(f1),
                s1 = math.sin(f1),
                c2 = math.cos(f2),
                s2 = math.sin(f2),
                t = math.tan(df / 4),
                hx = 4 / 3 * rx * t,
                hy = 4 / 3 * ry * t,
                m1 = [x1, y1],
                m2 = [x1 + hx * s1, y1 - hy * c1],
                m3 = [x2 + hx * s2, y2 - hy * c2],
                m4 = [x2, y2];
            m2[0] = 2 * m1[0] - m2[0];
            m2[1] = 2 * m1[1] - m2[1];
            if (recursive) {
                return [m2, m3, m4][concat](res);
            } else {
                res = [m2, m3, m4][concat](res).join()[split](",");
                var newres = [];
                for (var i = 0, ii = res.length; i < ii; i++) {
                    newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
                }
                return newres;
            }
        },
        findDotAtSegment = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
            var t1 = 1 - t;
            return {
                x: pow(t1, 3) * p1x + pow(t1, 2) * 3 * t * c1x + t1 * 3 * t * t * c2x + pow(t, 3) * p2x,
                y: pow(t1, 3) * p1y + pow(t1, 2) * 3 * t * c1y + t1 * 3 * t * t * c2y + pow(t, 3) * p2y
            };
        },
        curveDim = cacher(function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
            var a = (c2x - 2 * c1x + p1x) - (p2x - 2 * c2x + c1x),
                b = 2 * (c1x - p1x) - 2 * (c2x - c1x),
                c = p1x - c1x,
                t1 = (-b + math.sqrt(b * b - 4 * a * c)) / 2 / a,
                t2 = (-b - math.sqrt(b * b - 4 * a * c)) / 2 / a,
                y = [p1y, p2y],
                x = [p1x, p2x],
                dot;
            abs(t1) > "1e12" && (t1 = .5);
            abs(t2) > "1e12" && (t2 = .5);
            if (t1 > 0 && t1 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t1);
                x.push(dot.x);
                y.push(dot.y);
            }
            if (t2 > 0 && t2 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t2);
                x.push(dot.x);
                y.push(dot.y);
            }
            a = (c2y - 2 * c1y + p1y) - (p2y - 2 * c2y + c1y);
            b = 2 * (c1y - p1y) - 2 * (c2y - c1y);
            c = p1y - c1y;
            t1 = (-b + math.sqrt(b * b - 4 * a * c)) / 2 / a;
            t2 = (-b - math.sqrt(b * b - 4 * a * c)) / 2 / a;
            abs(t1) > "1e12" && (t1 = .5);
            abs(t2) > "1e12" && (t2 = .5);
            if (t1 > 0 && t1 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t1);
                x.push(dot.x);
                y.push(dot.y);
            }
            if (t2 > 0 && t2 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t2);
                x.push(dot.x);
                y.push(dot.y);
            }
            return {
                min: {x: mmin[apply](0, x), y: mmin[apply](0, y)},
                max: {x: mmax[apply](0, x), y: mmax[apply](0, y)}
            };
        }),
        path2curve = R._path2curve = cacher(function (path, path2) {
            var pth = !path2 && paths(path);
            if (!path2 && pth.curve) {
                return pathClone(pth.curve);
            }
            var p = pathToAbsolute(path),
                p2 = path2 && pathToAbsolute(path2),
                attrs = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                attrs2 = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                processPath = function (path, d) {
                    var nx, ny;
                    if (!path) {
                        return ["C", d.x, d.y, d.x, d.y, d.x, d.y];
                    }
                    !(path[0] in {T:1, Q:1}) && (d.qx = d.qy = null);
                    switch (path[0]) {
                        case "M":
                            d.X = path[1];
                            d.Y = path[2];
                            break;
                        case "A":
                            path = ["C"][concat](a2c[apply](0, [d.x, d.y][concat](path.slice(1))));
                            break;
                        case "S":
                            nx = d.x + (d.x - (d.bx || d.x));
                            ny = d.y + (d.y - (d.by || d.y));
                            path = ["C", nx, ny][concat](path.slice(1));
                            break;
                        case "T":
                            d.qx = d.x + (d.x - (d.qx || d.x));
                            d.qy = d.y + (d.y - (d.qy || d.y));
                            path = ["C"][concat](q2c(d.x, d.y, d.qx, d.qy, path[1], path[2]));
                            break;
                        case "Q":
                            d.qx = path[1];
                            d.qy = path[2];
                            path = ["C"][concat](q2c(d.x, d.y, path[1], path[2], path[3], path[4]));
                            break;
                        case "L":
                            path = ["C"][concat](l2c(d.x, d.y, path[1], path[2]));
                            break;
                        case "H":
                            path = ["C"][concat](l2c(d.x, d.y, path[1], d.y));
                            break;
                        case "V":
                            path = ["C"][concat](l2c(d.x, d.y, d.x, path[1]));
                            break;
                        case "Z":
                            path = ["C"][concat](l2c(d.x, d.y, d.X, d.Y));
                            break;
                    }
                    return path;
                },
                fixArc = function (pp, i) {
                    if (pp[i].length > 7) {
                        pp[i].shift();
                        var pi = pp[i];
                        while (pi.length) {
                            pp.splice(i++, 0, ["C"][concat](pi.splice(0, 6)));
                        }
                        pp.splice(i, 1);
                        ii = mmax(p.length, p2 && p2.length || 0);
                    }
                },
                fixM = function (path1, path2, a1, a2, i) {
                    if (path1 && path2 && path1[i][0] == "M" && path2[i][0] != "M") {
                        path2.splice(i, 0, ["M", a2.x, a2.y]);
                        a1.bx = 0;
                        a1.by = 0;
                        a1.x = path1[i][1];
                        a1.y = path1[i][2];
                        ii = mmax(p.length, p2 && p2.length || 0);
                    }
                };
            for (var i = 0, ii = mmax(p.length, p2 && p2.length || 0); i < ii; i++) {
                p[i] = processPath(p[i], attrs);
                fixArc(p, i);
                p2 && (p2[i] = processPath(p2[i], attrs2));
                p2 && fixArc(p2, i);
                fixM(p, p2, attrs, attrs2, i);
                fixM(p2, p, attrs2, attrs, i);
                var seg = p[i],
                    seg2 = p2 && p2[i],
                    seglen = seg.length,
                    seg2len = p2 && seg2.length;
                attrs.x = seg[seglen - 2];
                attrs.y = seg[seglen - 1];
                attrs.bx = toFloat(seg[seglen - 4]) || attrs.x;
                attrs.by = toFloat(seg[seglen - 3]) || attrs.y;
                attrs2.bx = p2 && (toFloat(seg2[seg2len - 4]) || attrs2.x);
                attrs2.by = p2 && (toFloat(seg2[seg2len - 3]) || attrs2.y);
                attrs2.x = p2 && seg2[seg2len - 2];
                attrs2.y = p2 && seg2[seg2len - 1];
            }
            if (!p2) {
                pth.curve = pathClone(p);
            }
            return p2 ? [p, p2] : p;
        }, null, pathClone),
        parseDots = R._parseDots = cacher(function (gradient) {
            var dots = [];
            for (var i = 0, ii = gradient.length; i < ii; i++) {
                var dot = {},
                    par = gradient[i].match(/^([^:]*):?([\d\.]*)/);
                dot.color = R.getRGB(par[1]);
                if (dot.color.error) {
                    return null;
                }
                dot.color = dot.color.hex;
                par[2] && (dot.offset = par[2] + "%");
                dots.push(dot);
            }
            for (i = 1, ii = dots.length - 1; i < ii; i++) {
                if (!dots[i].offset) {
                    var start = toFloat(dots[i - 1].offset || 0),
                        end = 0;
                    for (var j = i + 1; j < ii; j++) {
                        if (dots[j].offset) {
                            end = dots[j].offset;
                            break;
                        }
                    }
                    if (!end) {
                        end = 100;
                        j = ii;
                    }
                    end = toFloat(end);
                    var d = (end - start) / (j - i + 1);
                    for (; i < j; i++) {
                        start += d;
                        dots[i].offset = start + "%";
                    }
                }
            }
            return dots;
        }),
        tear = R._tear = function (el, paper) {
            el == paper.top && (paper.top = el.prev);
            el == paper.bottom && (paper.bottom = el.next);
            el.next && (el.next.prev = el.prev);
            el.prev && (el.prev.next = el.next);
        },
        tofront = R._tofront = function (el, paper) {
            if (paper.top === el) {
                return;
            }
            tear(el, paper);
            el.next = null;
            el.prev = paper.top;
            paper.top.next = el;
            paper.top = el;
        },
        toback = R._toback = function (el, paper) {
            if (paper.bottom === el) {
                return;
            }
            tear(el, paper);
            el.next = paper.bottom;
            el.prev = null;
            paper.bottom.prev = el;
            paper.bottom = el;
        },
        insertafter = R._insertafter = function (el, el2, paper) {
            tear(el, paper);
            el2 == paper.top && (paper.top = el);
            el2.next && (el2.next.prev = el);
            el.next = el2.next;
            el.prev = el2;
            el2.next = el;
        },
        insertbefore = R._insertbefore = function (el, el2, paper) {
            tear(el, paper);
            el2 == paper.bottom && (paper.bottom = el);
            el2.prev && (el2.prev.next = el);
            el.prev = el2.prev;
            el2.prev = el;
            el.next = el2;
        },
        
        toMatrix = R.toMatrix = function (path, transform) {
            var bb = pathDimensions(path),
                el = {
                    _: {
                        transform: E
                    },
                    getBBox: function () {
                        return bb;
                    }
                };
            extractTransform(el, transform);
            return el.matrix;
        },
        
        transformPath = R.transformPath = function (path, transform) {
            return mapPath(path, toMatrix(path, transform));
        },
        extractTransform = R._extractTransform = function (el, tstr) {
            if (tstr == null) {
                return el._.transform;
            }
            tstr = Str(tstr).replace(/\.{3}|\u2026/g, el._.transform || E);
            var tdata = R.parseTransformString(tstr),
                deg = 0,
                dx = 0,
                dy = 0,
                sx = 1,
                sy = 1,
                _ = el._,
                m = new Matrix;
            _.transform = tdata || [];
            if (tdata) {
                for (var i = 0, ii = tdata.length; i < ii; i++) {
                    var t = tdata[i],
                        tlen = t.length,
                        command = Str(t[0]).toLowerCase(),
                        absolute = t[0] != command,
                        inver = absolute ? m.invert() : 0,
                        x1,
                        y1,
                        x2,
                        y2,
                        bb;
                    if (command == "t" && tlen == 3) {
                        if (absolute) {
                            x1 = inver.x(0, 0);
                            y1 = inver.y(0, 0);
                            x2 = inver.x(t[1], t[2]);
                            y2 = inver.y(t[1], t[2]);
                            m.translate(x2 - x1, y2 - y1);
                        } else {
                            m.translate(t[1], t[2]);
                        }
                    } else if (command == "r") {
                        if (tlen == 2) {
                            bb = bb || el.getBBox(1);
                            m.rotate(t[1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                            deg += t[1];
                        } else if (tlen == 4) {
                            if (absolute) {
                                x2 = inver.x(t[2], t[3]);
                                y2 = inver.y(t[2], t[3]);
                                m.rotate(t[1], x2, y2);
                            } else {
                                m.rotate(t[1], t[2], t[3]);
                            }
                            deg += t[1];
                        }
                    } else if (command == "s") {
                        if (tlen == 2 || tlen == 3) {
                            bb = bb || el.getBBox(1);
                            m.scale(t[1], t[tlen - 1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                            sx *= t[1];
                            sy *= t[tlen - 1];
                        } else if (tlen == 5) {
                            if (absolute) {
                                x2 = inver.x(t[3], t[4]);
                                y2 = inver.y(t[3], t[4]);
                                m.scale(t[1], t[2], x2, y2);
                            } else {
                                m.scale(t[1], t[2], t[3], t[4]);
                            }
                            sx *= t[1];
                            sy *= t[2];
                        }
                    } else if (command == "m" && tlen == 7) {
                        m.add(t[1], t[2], t[3], t[4], t[5], t[6]);
                    }
                    _.dirtyT = 1;
                    el.matrix = m;
                }
            }

            
            el.matrix = m;

            _.sx = sx;
            _.sy = sy;
            _.deg = deg;
            _.dx = dx = m.e;
            _.dy = dy = m.f;

            if (sx == 1 && sy == 1 && !deg && _.bbox) {
                _.bbox.x += +dx;
                _.bbox.y += +dy;
            } else {
                _.dirtyT = 1;
            }
        },
        getEmpty = function (item) {
            var l = item[0];
            switch (l.toLowerCase()) {
                case "t": return [l, 0, 0];
                case "m": return [l, 1, 0, 0, 1, 0, 0];
                case "r": if (item.length == 4) {
                    return [l, 0, item[2], item[3]];
                } else {
                    return [l, 0];
                }
                case "s": if (item.length == 5) {
                    return [l, 1, 1, item[3], item[4]];
                } else if (item.length == 3) {
                    return [l, 1, 1];
                } else {
                    return [l, 1];
                }
            }
        },
        equaliseTransform = R._equaliseTransform = function (t1, t2) {
            t2 = Str(t2).replace(/\.{3}|\u2026/g, t1);
            t1 = R.parseTransformString(t1) || [];
            t2 = R.parseTransformString(t2) || [];
            var maxlength = mmax(t1.length, t2.length),
                from = [],
                to = [],
                i = 0, j, jj,
                tt1, tt2;
            for (; i < maxlength; i++) {
                tt1 = t1[i] || getEmpty(t2[i]);
                tt2 = t2[i] || getEmpty(tt1);
                if ((tt1[0] != tt2[0]) ||
                    (tt1[0].toLowerCase() == "r" && (tt1[2] != tt2[2] || tt1[3] != tt2[3])) ||
                    (tt1[0].toLowerCase() == "s" && (tt1[3] != tt2[3] || tt1[4] != tt2[4]))
                    ) {
                    return;
                }
                from[i] = [];
                to[i] = [];
                for (j = 0, jj = mmax(tt1.length, tt2.length); j < jj; j++) {
                    j in tt1 && (from[i][j] = tt1[j]);
                    j in tt2 && (to[i][j] = tt2[j]);
                }
            }
            return {
                from: from,
                to: to
            };
        };
    R._getContainer = function (x, y, w, h) {
        var container;
        container = h == null && !R.is(x, "object") ? g.doc.getElementById(x) : x;
        if (container == null) {
            return;
        }
        if (container.tagName) {
            if (y == null) {
                return {
                    container: container,
                    width: container.style.pixelWidth || container.offsetWidth,
                    height: container.style.pixelHeight || container.offsetHeight
                };
            } else {
                return {
                    container: container,
                    width: y,
                    height: w
                };
            }
        }
        return {
            container: 1,
            x: x,
            y: y,
            width: w,
            height: h
        };
    };
    
    R.pathToRelative = pathToRelative;
    R._engine = {};
    
    R.path2curve = path2curve;
    
    R.matrix = function (a, b, c, d, e, f) {
        return new Matrix(a, b, c, d, e, f);
    };
    function Matrix(a, b, c, d, e, f) {
        if (a != null) {
            this.a = +a;
            this.b = +b;
            this.c = +c;
            this.d = +d;
            this.e = +e;
            this.f = +f;
        } else {
            this.a = 1;
            this.b = 0;
            this.c = 0;
            this.d = 1;
            this.e = 0;
            this.f = 0;
        }
    }
    (function (matrixproto) {
        
        matrixproto.add = function (a, b, c, d, e, f) {
            var out = [[], [], []],
                m = [[this.a, this.c, this.e], [this.b, this.d, this.f], [0, 0, 1]],
                matrix = [[a, c, e], [b, d, f], [0, 0, 1]],
                x, y, z, res;

            if (a && a instanceof Matrix) {
                matrix = [[a.a, a.c, a.e], [a.b, a.d, a.f], [0, 0, 1]];
            }

            for (x = 0; x < 3; x++) {
                for (y = 0; y < 3; y++) {
                    res = 0;
                    for (z = 0; z < 3; z++) {
                        res += m[x][z] * matrix[z][y];
                    }
                    out[x][y] = res;
                }
            }
            this.a = out[0][0];
            this.b = out[1][0];
            this.c = out[0][1];
            this.d = out[1][1];
            this.e = out[0][2];
            this.f = out[1][2];
        };
        
        matrixproto.invert = function () {
            var me = this,
                x = me.a * me.d - me.b * me.c;
            return new Matrix(me.d / x, -me.b / x, -me.c / x, me.a / x, (me.c * me.f - me.d * me.e) / x, (me.b * me.e - me.a * me.f) / x);
        };
        
        matrixproto.clone = function () {
            return new Matrix(this.a, this.b, this.c, this.d, this.e, this.f);
        };
        
        matrixproto.translate = function (x, y) {
            this.add(1, 0, 0, 1, x, y);
        };
        
        matrixproto.scale = function (x, y, cx, cy) {
            y == null && (y = x);
            (cx || cy) && this.add(1, 0, 0, 1, cx, cy);
            this.add(x, 0, 0, y, 0, 0);
            (cx || cy) && this.add(1, 0, 0, 1, -cx, -cy);
        };
        
        matrixproto.rotate = function (a, x, y) {
            a = R.rad(a);
            x = x || 0;
            y = y || 0;
            var cos = +math.cos(a).toFixed(9),
                sin = +math.sin(a).toFixed(9);
            this.add(cos, sin, -sin, cos, x, y);
            this.add(1, 0, 0, 1, -x, -y);
        };
        
        matrixproto.x = function (x, y) {
            return x * this.a + y * this.c + this.e;
        };
        
        matrixproto.y = function (x, y) {
            return x * this.b + y * this.d + this.f;
        };
        matrixproto.get = function (i) {
            return +this[Str.fromCharCode(97 + i)].toFixed(4);
        };
        matrixproto.toString = function () {
            return R.svg ?
                "matrix(" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)].join() + ")" :
                [this.get(0), this.get(2), this.get(1), this.get(3), 0, 0].join();
        };
        matrixproto.toFilter = function () {
            return "progid:DXImageTransform.Microsoft.Matrix(M11=" + this.get(0) +
                ", M12=" + this.get(2) + ", M21=" + this.get(1) + ", M22=" + this.get(3) +
                ", Dx=" + this.get(4) + ", Dy=" + this.get(5) + ", sizingmethod='auto expand')";
        };
        matrixproto.offset = function () {
            return [this.e.toFixed(4), this.f.toFixed(4)];
        };
        function norm(a) {
            return a[0] * a[0] + a[1] * a[1];
        }
        function normalize(a) {
            var mag = math.sqrt(norm(a));
            a[0] && (a[0] /= mag);
            a[1] && (a[1] /= mag);
        }
        
        matrixproto.split = function () {
            var out = {};
            // translation
            out.dx = this.e;
            out.dy = this.f;

            // scale and shear
            var row = [[this.a, this.c], [this.b, this.d]];
            out.scalex = math.sqrt(norm(row[0]));
            normalize(row[0]);

            out.shear = row[0][0] * row[1][0] + row[0][1] * row[1][1];
            row[1] = [row[1][0] - row[0][0] * out.shear, row[1][1] - row[0][1] * out.shear];

            out.scaley = math.sqrt(norm(row[1]));
            normalize(row[1]);
            out.shear /= out.scaley;

            // rotation
            var sin = -row[0][1],
                cos = row[1][1];
            if (cos < 0) {
                out.rotate = R.deg(math.acos(cos));
                if (sin < 0) {
                    out.rotate = 360 - out.rotate;
                }
            } else {
                out.rotate = R.deg(math.asin(sin));
            }

            out.isSimple = !+out.shear.toFixed(9) && (out.scalex.toFixed(9) == out.scaley.toFixed(9) || !out.rotate);
            out.isSuperSimple = !+out.shear.toFixed(9) && out.scalex.toFixed(9) == out.scaley.toFixed(9) && !out.rotate;
            out.noRotation = !+out.shear.toFixed(9) && !out.rotate;
            return out;
        };
        
        matrixproto.toTransformString = function (shorter) {
            var s = shorter || this[split]();
            if (s.isSimple) {
                s.scalex = +s.scalex.toFixed(4);
                s.scaley = +s.scaley.toFixed(4);
                s.rotate = +s.rotate.toFixed(4);
                return  (s.dx || s.dy ? "t" + [s.dx, s.dy] : E) + 
                        (s.scalex != 1 || s.scaley != 1 ? "s" + [s.scalex, s.scaley, 0, 0] : E) +
                        (s.rotate ? "r" + [s.rotate, 0, 0] : E);
            } else {
                return "m" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)];
            }
        };
    })(Matrix.prototype);

    // WebKit rendering bug workaround method
    var version = navigator.userAgent.match(/Version\/(.*?)\s/) || navigator.userAgent.match(/Chrome\/(\d+)/);
    if ((navigator.vendor == "Apple Computer, Inc.") && (version && version[1] < 4 || navigator.platform.slice(0, 2) == "iP") ||
        (navigator.vendor == "Google Inc." && version && version[1] < 8)) {
        
        paperproto.safari = function () {
            var rect = this.rect(-99, -99, this.width + 99, this.height + 99).attr({stroke: "none"});
            setTimeout(function () {rect.remove();});
        };
    } else {
        paperproto.safari = fun;
    }
 
    var preventDefault = function () {
        this.returnValue = false;
    },
    preventTouch = function () {
        return this.originalEvent.preventDefault();
    },
    stopPropagation = function () {
        this.cancelBubble = true;
    },
    stopTouch = function () {
        return this.originalEvent.stopPropagation();
    },
    addEvent = (function () {
        if (g.doc.addEventListener) {
            return function (obj, type, fn, element) {
                var realName = supportsTouch && touchMap[type] ? touchMap[type] : type,
                    f = function (e) {
                        var scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                            scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
                            x = e.clientX + scrollX,
                            y = e.clientY + scrollY;
                    if (supportsTouch && touchMap[has](type)) {
                        for (var i = 0, ii = e.targetTouches && e.targetTouches.length; i < ii; i++) {
                            if (e.targetTouches[i].target == obj) {
                                var olde = e;
                                e = e.targetTouches[i];
                                e.originalEvent = olde;
                                e.preventDefault = preventTouch;
                                e.stopPropagation = stopTouch;
                                break;
                            }
                        }
                    }
                    return fn.call(element, e, x, y);
                };
                obj.addEventListener(realName, f, false);
                return function () {
                    obj.removeEventListener(realName, f, false);
                    return true;
                };
            };
        } else if (g.doc.attachEvent) {
            return function (obj, type, fn, element) {
                var f = function (e) {
                    e = e || g.win.event;
                    var scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                        scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
                        x = e.clientX + scrollX,
                        y = e.clientY + scrollY;
                    e.preventDefault = e.preventDefault || preventDefault;
                    e.stopPropagation = e.stopPropagation || stopPropagation;
                    return fn.call(element, e, x, y);
                };
                obj.attachEvent("on" + type, f);
                var detacher = function () {
                    obj.detachEvent("on" + type, f);
                    return true;
                };
                return detacher;
            };
        }
    })(),
    drag = [],
    dragMove = function (e) {
        var x = e.clientX,
            y = e.clientY,
            scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
            scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
            dragi,
            j = drag.length;
        while (j--) {
            dragi = drag[j];
            if (supportsTouch) {
                var i = e.touches.length,
                    touch;
                while (i--) {
                    touch = e.touches[i];
                    if (touch.identifier == dragi.el._drag.id) {
                        x = touch.clientX;
                        y = touch.clientY;
                        (e.originalEvent ? e.originalEvent : e).preventDefault();
                        break;
                    }
                }
            } else {
                e.preventDefault();
            }
            var node = dragi.el.node,
                o,
                next = node.nextSibling,
                parent = node.parentNode,
                display = node.style.display;
            g.win.opera && parent.removeChild(node);
            node.style.display = "none";
            o = dragi.el.paper.getElementByPoint(x, y);
            node.style.display = display;
            g.win.opera && (next ? parent.insertBefore(node, next) : parent.appendChild(node));
            o && eve("raphael.drag.over." + dragi.el.id, dragi.el, o);
            x += scrollX;
            y += scrollY;
            eve("raphael.drag.move." + dragi.el.id, dragi.move_scope || dragi.el, x - dragi.el._drag.x, y - dragi.el._drag.y, x, y, e);
        }
    },
    dragUp = function (e) {
        R.unmousemove(dragMove).unmouseup(dragUp);
        var i = drag.length,
            dragi;
        while (i--) {
            dragi = drag[i];
            dragi.el._drag = {};
            eve("raphael.drag.end." + dragi.el.id, dragi.end_scope || dragi.start_scope || dragi.move_scope || dragi.el, e);
        }
        drag = [];
    },
    
    elproto = R.el = {};
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    for (var i = events.length; i--;) {
        (function (eventName) {
            R[eventName] = elproto[eventName] = function (fn, scope) {
                if (R.is(fn, "function")) {
                    this.events = this.events || [];
                    this.events.push({name: eventName, f: fn, unbind: addEvent(this.shape || this.node || g.doc, eventName, fn, scope || this)});
                }
                return this;
            };
            R["un" + eventName] = elproto["un" + eventName] = function (fn) {
                var events = this.events || [],
                    l = events.length;
                while (l--) if (events[l].name == eventName && events[l].f == fn) {
                    events[l].unbind();
                    events.splice(l, 1);
                    !events.length && delete this.events;
                    return this;
                }
                return this;
            };
        })(events[i]);
    }
    
    
    elproto.data = function (key, value) {
        var data = eldata[this.id] = eldata[this.id] || {};
        if (arguments.length == 1) {
            if (R.is(key, "object")) {
                for (var i in key) if (key[has](i)) {
                    this.data(i, key[i]);
                }
                return this;
            }
            eve("raphael.data.get." + this.id, this, data[key], key);
            return data[key];
        }
        data[key] = value;
        eve("raphael.data.set." + this.id, this, value, key);
        return this;
    };
    
    elproto.removeData = function (key) {
        if (key == null) {
            eldata[this.id] = {};
        } else {
            eldata[this.id] && delete eldata[this.id][key];
        }
        return this;
    };
    
    elproto.hover = function (f_in, f_out, scope_in, scope_out) {
        return this.mouseover(f_in, scope_in).mouseout(f_out, scope_out || scope_in);
    };
    
    elproto.unhover = function (f_in, f_out) {
        return this.unmouseover(f_in).unmouseout(f_out);
    };
    var draggable = [];
    
    elproto.drag = function (onmove, onstart, onend, move_scope, start_scope, end_scope) {
        function start(e) {
            (e.originalEvent || e).preventDefault();
            var scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft;
            this._drag.x = e.clientX + scrollX;
            this._drag.y = e.clientY + scrollY;
            this._drag.id = e.identifier;
            !drag.length && R.mousemove(dragMove).mouseup(dragUp);
            drag.push({el: this, move_scope: move_scope, start_scope: start_scope, end_scope: end_scope});
            onstart && eve.on("raphael.drag.start." + this.id, onstart);
            onmove && eve.on("raphael.drag.move." + this.id, onmove);
            onend && eve.on("raphael.drag.end." + this.id, onend);
            eve("raphael.drag.start." + this.id, start_scope || move_scope || this, e.clientX + scrollX, e.clientY + scrollY, e);
        }
        this._drag = {};
        draggable.push({el: this, start: start});
        this.mousedown(start);
        return this;
    };
    
    elproto.onDragOver = function (f) {
        f ? eve.on("raphael.drag.over." + this.id, f) : eve.unbind("raphael.drag.over." + this.id);
    };
    
    elproto.undrag = function () {
        var i = draggable.length;
        while (i--) if (draggable[i].el == this) {
            this.unmousedown(draggable[i].start);
            draggable.splice(i, 1);
            eve.unbind("raphael.drag.*." + this.id);
        }
        !draggable.length && R.unmousemove(dragMove).unmouseup(dragUp);
    };
    
    paperproto.circle = function (x, y, r) {
        var out = R._engine.circle(this, x || 0, y || 0, r || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.rect = function (x, y, w, h, r) {
        var out = R._engine.rect(this, x || 0, y || 0, w || 0, h || 0, r || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.ellipse = function (x, y, rx, ry) {
        var out = R._engine.ellipse(this, x || 0, y || 0, rx || 0, ry || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.path = function (pathString) {
        pathString && !R.is(pathString, string) && !R.is(pathString[0], array) && (pathString += E);
        var out = R._engine.path(R.format[apply](R, arguments), this);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.image = function (src, x, y, w, h) {
        var out = R._engine.image(this, src || "about:blank", x || 0, y || 0, w || 0, h || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.text = function (x, y, text) {
        var out = R._engine.text(this, x || 0, y || 0, Str(text));
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.set = function (itemsArray) {
        !R.is(itemsArray, "array") && (itemsArray = Array.prototype.splice.call(arguments, 0, arguments.length));
        var out = new Set(itemsArray);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    paperproto.setStart = function (set) {
        this.__set__ = set || this.set();
    };
    
    paperproto.setFinish = function (set) {
        var out = this.__set__;
        delete this.__set__;
        return out;
    };
    
    paperproto.setSize = function (width, height) {
        return R._engine.setSize.call(this, width, height);
    };
    
    paperproto.setViewBox = function (x, y, w, h, fit) {
        return R._engine.setViewBox.call(this, x, y, w, h, fit);
    };
    
    
    paperproto.top = paperproto.bottom = null;
    
    paperproto.raphael = R;
    var getOffset = function (elem) {
        var box = elem.getBoundingClientRect(),
            doc = elem.ownerDocument,
            body = doc.body,
            docElem = doc.documentElement,
            clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
            top  = box.top  + (g.win.pageYOffset || docElem.scrollTop || body.scrollTop ) - clientTop,
            left = box.left + (g.win.pageXOffset || docElem.scrollLeft || body.scrollLeft) - clientLeft;
        return {
            y: top,
            x: left
        };
    };
    
    paperproto.getElementByPoint = function (x, y) {
        var paper = this,
            svg = paper.canvas,
            target = g.doc.elementFromPoint(x, y);
        if (g.win.opera && target.tagName == "svg") {
            var so = getOffset(svg),
                sr = svg.createSVGRect();
            sr.x = x - so.x;
            sr.y = y - so.y;
            sr.width = sr.height = 1;
            var hits = svg.getIntersectionList(sr, null);
            if (hits.length) {
                target = hits[hits.length - 1];
            }
        }
        if (!target) {
            return null;
        }
        while (target.parentNode && target != svg.parentNode && !target.raphael) {
            target = target.parentNode;
        }
        target == paper.canvas.parentNode && (target = svg);
        target = target && target.raphael ? paper.getById(target.raphaelid) : null;
        return target;
    };
    
    paperproto.getById = function (id) {
        var bot = this.bottom;
        while (bot) {
            if (bot.id == id) {
                return bot;
            }
            bot = bot.next;
        }
        return null;
    };
    
    paperproto.forEach = function (callback, thisArg) {
        var bot = this.bottom;
        while (bot) {
            if (callback.call(thisArg, bot) === false) {
                return this;
            }
            bot = bot.next;
        }
        return this;
    };
    
    paperproto.getElementsByPoint = function (x, y) {
        var set = this.set();
        this.forEach(function (el) {
            if (el.isPointInside(x, y)) {
                set.push(el);
            }
        });
        return set;
    };
    function x_y() {
        return this.x + S + this.y;
    }
    function x_y_w_h() {
        return this.x + S + this.y + S + this.width + " \xd7 " + this.height;
    }
    
    elproto.isPointInside = function (x, y) {
        var rp = this.realPath = this.realPath || getPath[this.type](this);
        return R.isPointInsidePath(rp, x, y);
    };
    
    elproto.getBBox = function (isWithoutTransform) {
        if (this.removed) {
            return {};
        }
        var _ = this._;
        if (isWithoutTransform) {
            if (_.dirty || !_.bboxwt) {
                this.realPath = getPath[this.type](this);
                _.bboxwt = pathDimensions(this.realPath);
                _.bboxwt.toString = x_y_w_h;
                _.dirty = 0;
            }
            return _.bboxwt;
        }
        if (_.dirty || _.dirtyT || !_.bbox) {
            if (_.dirty || !this.realPath) {
                _.bboxwt = 0;
                this.realPath = getPath[this.type](this);
            }
            _.bbox = pathDimensions(mapPath(this.realPath, this.matrix));
            _.bbox.toString = x_y_w_h;
            _.dirty = _.dirtyT = 0;
        }
        return _.bbox;
    };
    
    elproto.clone = function () {
        if (this.removed) {
            return null;
        }
        var out = this.paper[this.type]().attr(this.attr());
        this.__set__ && this.__set__.push(out);
        return out;
    };
    
    elproto.glow = function (glow) {
        if (this.type == "text") {
            return null;
        }
        glow = glow || {};
        var s = {
            width: (glow.width || 10) + (+this.attr("stroke-width") || 1),
            fill: glow.fill || false,
            opacity: glow.opacity || .5,
            offsetx: glow.offsetx || 0,
            offsety: glow.offsety || 0,
            color: glow.color || "#000"
        },
            c = s.width / 2,
            r = this.paper,
            out = r.set(),
            path = this.realPath || getPath[this.type](this);
        path = this.matrix ? mapPath(path, this.matrix) : path;
        for (var i = 1; i < c + 1; i++) {
            out.push(r.path(path).attr({
                stroke: s.color,
                fill: s.fill ? s.color : "none",
                "stroke-linejoin": "round",
                "stroke-linecap": "round",
                "stroke-width": +(s.width / c * i).toFixed(3),
                opacity: +(s.opacity / c).toFixed(3)
            }));
        }
        return out.insertBefore(this).translate(s.offsetx, s.offsety);
    };
    var curveslengths = {},
    getPointAtSegmentLength = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length) {
        if (length == null) {
            return bezlen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y);
        } else {
            return R.findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, getTatLen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length));
        }
    },
    getLengthFactory = function (istotal, subpath) {
        return function (path, length, onlystart) {
            path = path2curve(path);
            var x, y, p, l, sp = "", subpaths = {}, point,
                len = 0;
            for (var i = 0, ii = path.length; i < ii; i++) {
                p = path[i];
                if (p[0] == "M") {
                    x = +p[1];
                    y = +p[2];
                } else {
                    l = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                    if (len + l > length) {
                        if (subpath && !subpaths.start) {
                            point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                            sp += ["C" + point.start.x, point.start.y, point.m.x, point.m.y, point.x, point.y];
                            if (onlystart) {return sp;}
                            subpaths.start = sp;
                            sp = ["M" + point.x, point.y + "C" + point.n.x, point.n.y, point.end.x, point.end.y, p[5], p[6]].join();
                            len += l;
                            x = +p[5];
                            y = +p[6];
                            continue;
                        }
                        if (!istotal && !subpath) {
                            point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                            return {x: point.x, y: point.y, alpha: point.alpha};
                        }
                    }
                    len += l;
                    x = +p[5];
                    y = +p[6];
                }
                sp += p.shift() + p;
            }
            subpaths.end = sp;
            point = istotal ? len : subpath ? subpaths : R.findDotsAtSegment(x, y, p[0], p[1], p[2], p[3], p[4], p[5], 1);
            point.alpha && (point = {x: point.x, y: point.y, alpha: point.alpha});
            return point;
        };
    };
    var getTotalLength = getLengthFactory(1),
        getPointAtLength = getLengthFactory(),
        getSubpathsAtLength = getLengthFactory(0, 1);
    
    R.getTotalLength = getTotalLength;
    
    R.getPointAtLength = getPointAtLength;
    
    R.getSubpath = function (path, from, to) {
        if (this.getTotalLength(path) - to < 1e-6) {
            return getSubpathsAtLength(path, from).end;
        }
        var a = getSubpathsAtLength(path, to, 1);
        return from ? getSubpathsAtLength(a, from).end : a;
    };
    
    elproto.getTotalLength = function () {
        if (this.type != "path") {return;}
        if (this.node.getTotalLength) {
            return this.node.getTotalLength();
        }
        return getTotalLength(this.attrs.path);
    };
    
    elproto.getPointAtLength = function (length) {
        if (this.type != "path") {return;}
        return getPointAtLength(this.attrs.path, length);
    };
    
    elproto.getSubpath = function (from, to) {
        if (this.type != "path") {return;}
        return R.getSubpath(this.attrs.path, from, to);
    };
    
    var ef = R.easing_formulas = {
        linear: function (n) {
            return n;
        },
        "<": function (n) {
            return pow(n, 1.7);
        },
        ">": function (n) {
            return pow(n, .48);
        },
        "<>": function (n) {
            var q = .48 - n / 1.04,
                Q = math.sqrt(.1734 + q * q),
                x = Q - q,
                X = pow(abs(x), 1 / 3) * (x < 0 ? -1 : 1),
                y = -Q - q,
                Y = pow(abs(y), 1 / 3) * (y < 0 ? -1 : 1),
                t = X + Y + .5;
            return (1 - t) * 3 * t * t + t * t * t;
        },
        backIn: function (n) {
            var s = 1.70158;
            return n * n * ((s + 1) * n - s);
        },
        backOut: function (n) {
            n = n - 1;
            var s = 1.70158;
            return n * n * ((s + 1) * n + s) + 1;
        },
        elastic: function (n) {
            if (n == !!n) {
                return n;
            }
            return pow(2, -10 * n) * math.sin((n - .075) * (2 * PI) / .3) + 1;
        },
        bounce: function (n) {
            var s = 7.5625,
                p = 2.75,
                l;
            if (n < (1 / p)) {
                l = s * n * n;
            } else {
                if (n < (2 / p)) {
                    n -= (1.5 / p);
                    l = s * n * n + .75;
                } else {
                    if (n < (2.5 / p)) {
                        n -= (2.25 / p);
                        l = s * n * n + .9375;
                    } else {
                        n -= (2.625 / p);
                        l = s * n * n + .984375;
                    }
                }
            }
            return l;
        }
    };
    ef.easeIn = ef["ease-in"] = ef["<"];
    ef.easeOut = ef["ease-out"] = ef[">"];
    ef.easeInOut = ef["ease-in-out"] = ef["<>"];
    ef["back-in"] = ef.backIn;
    ef["back-out"] = ef.backOut;

    var animationElements = [],
        requestAnimFrame = window.requestAnimationFrame       ||
                           window.webkitRequestAnimationFrame ||
                           window.mozRequestAnimationFrame    ||
                           window.oRequestAnimationFrame      ||
                           window.msRequestAnimationFrame     ||
                           function (callback) {
                               setTimeout(callback, 16);
                           },
        animation = function () {
            var Now = +new Date,
                l = 0;
            for (; l < animationElements.length; l++) {
                var e = animationElements[l];
                if (e.el.removed || e.paused) {
                    continue;
                }
                var time = Now - e.start,
                    ms = e.ms,
                    easing = e.easing,
                    from = e.from,
                    diff = e.diff,
                    to = e.to,
                    t = e.t,
                    that = e.el,
                    set = {},
                    now,
                    init = {},
                    key;
                if (e.initstatus) {
                    time = (e.initstatus * e.anim.top - e.prev) / (e.percent - e.prev) * ms;
                    e.status = e.initstatus;
                    delete e.initstatus;
                    e.stop && animationElements.splice(l--, 1);
                } else {
                    e.status = (e.prev + (e.percent - e.prev) * (time / ms)) / e.anim.top;
                }
                if (time < 0) {
                    continue;
                }
                if (time < ms) {
                    var pos = easing(time / ms);
                    for (var attr in from) if (from[has](attr)) {
                        switch (availableAnimAttrs[attr]) {
                            case nu:
                                now = +from[attr] + pos * ms * diff[attr];
                                break;
                            case "colour":
                                now = "rgb(" + [
                                    upto255(round(from[attr].r + pos * ms * diff[attr].r)),
                                    upto255(round(from[attr].g + pos * ms * diff[attr].g)),
                                    upto255(round(from[attr].b + pos * ms * diff[attr].b))
                                ].join(",") + ")";
                                break;
                            case "path":
                                now = [];
                                for (var i = 0, ii = from[attr].length; i < ii; i++) {
                                    now[i] = [from[attr][i][0]];
                                    for (var j = 1, jj = from[attr][i].length; j < jj; j++) {
                                        now[i][j] = +from[attr][i][j] + pos * ms * diff[attr][i][j];
                                    }
                                    now[i] = now[i].join(S);
                                }
                                now = now.join(S);
                                break;
                            case "transform":
                                if (diff[attr].real) {
                                    now = [];
                                    for (i = 0, ii = from[attr].length; i < ii; i++) {
                                        now[i] = [from[attr][i][0]];
                                        for (j = 1, jj = from[attr][i].length; j < jj; j++) {
                                            now[i][j] = from[attr][i][j] + pos * ms * diff[attr][i][j];
                                        }
                                    }
                                } else {
                                    var get = function (i) {
                                        return +from[attr][i] + pos * ms * diff[attr][i];
                                    };
                                    // now = [["r", get(2), 0, 0], ["t", get(3), get(4)], ["s", get(0), get(1), 0, 0]];
                                    now = [["m", get(0), get(1), get(2), get(3), get(4), get(5)]];
                                }
                                break;
                            case "csv":
                                if (attr == "clip-rect") {
                                    now = [];
                                    i = 4;
                                    while (i--) {
                                        now[i] = +from[attr][i] + pos * ms * diff[attr][i];
                                    }
                                }
                                break;
                            default:
                                var from2 = [][concat](from[attr]);
                                now = [];
                                i = that.paper.customAttributes[attr].length;
                                while (i--) {
                                    now[i] = +from2[i] + pos * ms * diff[attr][i];
                                }
                                break;
                        }
                        set[attr] = now;
                    }
                    that.attr(set);
                    (function (id, that, anim) {
                        setTimeout(function () {
                            eve("raphael.anim.frame." + id, that, anim);
                        });
                    })(that.id, that, e.anim);
                } else {
                    (function(f, el, a) {
                        setTimeout(function() {
                            eve("raphael.anim.frame." + el.id, el, a);
                            eve("raphael.anim.finish." + el.id, el, a);
                            R.is(f, "function") && f.call(el);
                        });
                    })(e.callback, that, e.anim);
                    that.attr(to);
                    animationElements.splice(l--, 1);
                    if (e.repeat > 1 && !e.next) {
                        for (key in to) if (to[has](key)) {
                            init[key] = e.totalOrigin[key];
                        }
                        e.el.attr(init);
                        runAnimation(e.anim, e.el, e.anim.percents[0], null, e.totalOrigin, e.repeat - 1);
                    }
                    if (e.next && !e.stop) {
                        runAnimation(e.anim, e.el, e.next, null, e.totalOrigin, e.repeat);
                    }
                }
            }
            R.svg && that && that.paper && that.paper.safari();
            animationElements.length && requestAnimFrame(animation);
        },
        upto255 = function (color) {
            return color > 255 ? 255 : color < 0 ? 0 : color;
        };
    
    elproto.animateWith = function (el, anim, params, ms, easing, callback) {
        var element = this;
        if (element.removed) {
            callback && callback.call(element);
            return element;
        }
        var a = params instanceof Animation ? params : R.animation(params, ms, easing, callback),
            x, y;
        runAnimation(a, element, a.percents[0], null, element.attr());
        for (var i = 0, ii = animationElements.length; i < ii; i++) {
            if (animationElements[i].anim == anim && animationElements[i].el == el) {
                animationElements[ii - 1].start = animationElements[i].start;
                break;
            }
        }
        return element;
        // 
        // 
        // var a = params ? R.animation(params, ms, easing, callback) : anim,
        //     status = element.status(anim);
        // return this.animate(a).status(a, status * anim.ms / a.ms);
    };
    function CubicBezierAtTime(t, p1x, p1y, p2x, p2y, duration) {
        var cx = 3 * p1x,
            bx = 3 * (p2x - p1x) - cx,
            ax = 1 - cx - bx,
            cy = 3 * p1y,
            by = 3 * (p2y - p1y) - cy,
            ay = 1 - cy - by;
        function sampleCurveX(t) {
            return ((ax * t + bx) * t + cx) * t;
        }
        function solve(x, epsilon) {
            var t = solveCurveX(x, epsilon);
            return ((ay * t + by) * t + cy) * t;
        }
        function solveCurveX(x, epsilon) {
            var t0, t1, t2, x2, d2, i;
            for(t2 = x, i = 0; i < 8; i++) {
                x2 = sampleCurveX(t2) - x;
                if (abs(x2) < epsilon) {
                    return t2;
                }
                d2 = (3 * ax * t2 + 2 * bx) * t2 + cx;
                if (abs(d2) < 1e-6) {
                    break;
                }
                t2 = t2 - x2 / d2;
            }
            t0 = 0;
            t1 = 1;
            t2 = x;
            if (t2 < t0) {
                return t0;
            }
            if (t2 > t1) {
                return t1;
            }
            while (t0 < t1) {
                x2 = sampleCurveX(t2);
                if (abs(x2 - x) < epsilon) {
                    return t2;
                }
                if (x > x2) {
                    t0 = t2;
                } else {
                    t1 = t2;
                }
                t2 = (t1 - t0) / 2 + t0;
            }
            return t2;
        }
        return solve(t, 1 / (200 * duration));
    }
    elproto.onAnimation = function (f) {
        f ? eve.on("raphael.anim.frame." + this.id, f) : eve.unbind("raphael.anim.frame." + this.id);
        return this;
    };
    function Animation(anim, ms) {
        var percents = [],
            newAnim = {};
        this.ms = ms;
        this.times = 1;
        if (anim) {
            for (var attr in anim) if (anim[has](attr)) {
                newAnim[toFloat(attr)] = anim[attr];
                percents.push(toFloat(attr));
            }
            percents.sort(sortByNumber);
        }
        this.anim = newAnim;
        this.top = percents[percents.length - 1];
        this.percents = percents;
    }
    
    Animation.prototype.delay = function (delay) {
        var a = new Animation(this.anim, this.ms);
        a.times = this.times;
        a.del = +delay || 0;
        return a;
    };
    
    Animation.prototype.repeat = function (times) { 
        var a = new Animation(this.anim, this.ms);
        a.del = this.del;
        a.times = math.floor(mmax(times, 0)) || 1;
        return a;
    };
    function runAnimation(anim, element, percent, status, totalOrigin, times) {
        percent = toFloat(percent);
        var params,
            isInAnim,
            isInAnimSet,
            percents = [],
            next,
            prev,
            timestamp,
            ms = anim.ms,
            from = {},
            to = {},
            diff = {};
        if (status) {
            for (i = 0, ii = animationElements.length; i < ii; i++) {
                var e = animationElements[i];
                if (e.el.id == element.id && e.anim == anim) {
                    if (e.percent != percent) {
                        animationElements.splice(i, 1);
                        isInAnimSet = 1;
                    } else {
                        isInAnim = e;
                    }
                    element.attr(e.totalOrigin);
                    break;
                }
            }
        } else {
            status = +to; // NaN
        }
        for (var i = 0, ii = anim.percents.length; i < ii; i++) {
            if (anim.percents[i] == percent || anim.percents[i] > status * anim.top) {
                percent = anim.percents[i];
                prev = anim.percents[i - 1] || 0;
                ms = ms / anim.top * (percent - prev);
                next = anim.percents[i + 1];
                params = anim.anim[percent];
                break;
            } else if (status) {
                element.attr(anim.anim[anim.percents[i]]);
            }
        }
        if (!params) {
            return;
        }
        if (!isInAnim) {
            for (var attr in params) if (params[has](attr)) {
                if (availableAnimAttrs[has](attr) || element.paper.customAttributes[has](attr)) {
                    from[attr] = element.attr(attr);
                    (from[attr] == null) && (from[attr] = availableAttrs[attr]);
                    to[attr] = params[attr];
                    switch (availableAnimAttrs[attr]) {
                        case nu:
                            diff[attr] = (to[attr] - from[attr]) / ms;
                            break;
                        case "colour":
                            from[attr] = R.getRGB(from[attr]);
                            var toColour = R.getRGB(to[attr]);
                            diff[attr] = {
                                r: (toColour.r - from[attr].r) / ms,
                                g: (toColour.g - from[attr].g) / ms,
                                b: (toColour.b - from[attr].b) / ms
                            };
                            break;
                        case "path":
                            var pathes = path2curve(from[attr], to[attr]),
                                toPath = pathes[1];
                            from[attr] = pathes[0];
                            diff[attr] = [];
                            for (i = 0, ii = from[attr].length; i < ii; i++) {
                                diff[attr][i] = [0];
                                for (var j = 1, jj = from[attr][i].length; j < jj; j++) {
                                    diff[attr][i][j] = (toPath[i][j] - from[attr][i][j]) / ms;
                                }
                            }
                            break;
                        case "transform":
                            var _ = element._,
                                eq = equaliseTransform(_[attr], to[attr]);
                            if (eq) {
                                from[attr] = eq.from;
                                to[attr] = eq.to;
                                diff[attr] = [];
                                diff[attr].real = true;
                                for (i = 0, ii = from[attr].length; i < ii; i++) {
                                    diff[attr][i] = [from[attr][i][0]];
                                    for (j = 1, jj = from[attr][i].length; j < jj; j++) {
                                        diff[attr][i][j] = (to[attr][i][j] - from[attr][i][j]) / ms;
                                    }
                                }
                            } else {
                                var m = (element.matrix || new Matrix),
                                    to2 = {
                                        _: {transform: _.transform},
                                        getBBox: function () {
                                            return element.getBBox(1);
                                        }
                                    };
                                from[attr] = [
                                    m.a,
                                    m.b,
                                    m.c,
                                    m.d,
                                    m.e,
                                    m.f
                                ];
                                extractTransform(to2, to[attr]);
                                to[attr] = to2._.transform;
                                diff[attr] = [
                                    (to2.matrix.a - m.a) / ms,
                                    (to2.matrix.b - m.b) / ms,
                                    (to2.matrix.c - m.c) / ms,
                                    (to2.matrix.d - m.d) / ms,
                                    (to2.matrix.e - m.e) / ms,
                                    (to2.matrix.f - m.f) / ms
                                ];
                                // from[attr] = [_.sx, _.sy, _.deg, _.dx, _.dy];
                                // var to2 = {_:{}, getBBox: function () { return element.getBBox(); }};
                                // extractTransform(to2, to[attr]);
                                // diff[attr] = [
                                //     (to2._.sx - _.sx) / ms,
                                //     (to2._.sy - _.sy) / ms,
                                //     (to2._.deg - _.deg) / ms,
                                //     (to2._.dx - _.dx) / ms,
                                //     (to2._.dy - _.dy) / ms
                                // ];
                            }
                            break;
                        case "csv":
                            var values = Str(params[attr])[split](separator),
                                from2 = Str(from[attr])[split](separator);
                            if (attr == "clip-rect") {
                                from[attr] = from2;
                                diff[attr] = [];
                                i = from2.length;
                                while (i--) {
                                    diff[attr][i] = (values[i] - from[attr][i]) / ms;
                                }
                            }
                            to[attr] = values;
                            break;
                        default:
                            values = [][concat](params[attr]);
                            from2 = [][concat](from[attr]);
                            diff[attr] = [];
                            i = element.paper.customAttributes[attr].length;
                            while (i--) {
                                diff[attr][i] = ((values[i] || 0) - (from2[i] || 0)) / ms;
                            }
                            break;
                    }
                }
            }
            var easing = params.easing,
                easyeasy = R.easing_formulas[easing];
            if (!easyeasy) {
                easyeasy = Str(easing).match(bezierrg);
                if (easyeasy && easyeasy.length == 5) {
                    var curve = easyeasy;
                    easyeasy = function (t) {
                        return CubicBezierAtTime(t, +curve[1], +curve[2], +curve[3], +curve[4], ms);
                    };
                } else {
                    easyeasy = pipe;
                }
            }
            timestamp = params.start || anim.start || +new Date;
            e = {
                anim: anim,
                percent: percent,
                timestamp: timestamp,
                start: timestamp + (anim.del || 0),
                status: 0,
                initstatus: status || 0,
                stop: false,
                ms: ms,
                easing: easyeasy,
                from: from,
                diff: diff,
                to: to,
                el: element,
                callback: params.callback,
                prev: prev,
                next: next,
                repeat: times || anim.times,
                origin: element.attr(),
                totalOrigin: totalOrigin
            };
            animationElements.push(e);
            if (status && !isInAnim && !isInAnimSet) {
                e.stop = true;
                e.start = new Date - ms * status;
                if (animationElements.length == 1) {
                    return animation();
                }
            }
            if (isInAnimSet) {
                e.start = new Date - e.ms * status;
            }
            animationElements.length == 1 && requestAnimFrame(animation);
        } else {
            isInAnim.initstatus = status;
            isInAnim.start = new Date - isInAnim.ms * status;
        }
        eve("raphael.anim.start." + element.id, element, anim);
    }
    
    R.animation = function (params, ms, easing, callback) {
        if (params instanceof Animation) {
            return params;
        }
        if (R.is(easing, "function") || !easing) {
            callback = callback || easing || null;
            easing = null;
        }
        params = Object(params);
        ms = +ms || 0;
        var p = {},
            json,
            attr;
        for (attr in params) if (params[has](attr) && toFloat(attr) != attr && toFloat(attr) + "%" != attr) {
            json = true;
            p[attr] = params[attr];
        }
        if (!json) {
            return new Animation(params, ms);
        } else {
            easing && (p.easing = easing);
            callback && (p.callback = callback);
            return new Animation({100: p}, ms);
        }
    };
    
    elproto.animate = function (params, ms, easing, callback) {
        var element = this;
        if (element.removed) {
            callback && callback.call(element);
            return element;
        }
        var anim = params instanceof Animation ? params : R.animation(params, ms, easing, callback);
        runAnimation(anim, element, anim.percents[0], null, element.attr());
        return element;
    };
    
    elproto.setTime = function (anim, value) {
        if (anim && value != null) {
            this.status(anim, mmin(value, anim.ms) / anim.ms);
        }
        return this;
    };
    
    elproto.status = function (anim, value) {
        var out = [],
            i = 0,
            len,
            e;
        if (value != null) {
            runAnimation(anim, this, -1, mmin(value, 1));
            return this;
        } else {
            len = animationElements.length;
            for (; i < len; i++) {
                e = animationElements[i];
                if (e.el.id == this.id && (!anim || e.anim == anim)) {
                    if (anim) {
                        return e.status;
                    }
                    out.push({
                        anim: e.anim,
                        status: e.status
                    });
                }
            }
            if (anim) {
                return 0;
            }
            return out;
        }
    };
    
    elproto.pause = function (anim) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.id == this.id && (!anim || animationElements[i].anim == anim)) {
            if (eve("raphael.anim.pause." + this.id, this, animationElements[i].anim) !== false) {
                animationElements[i].paused = true;
            }
        }
        return this;
    };
    
    elproto.resume = function (anim) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.id == this.id && (!anim || animationElements[i].anim == anim)) {
            var e = animationElements[i];
            if (eve("raphael.anim.resume." + this.id, this, e.anim) !== false) {
                delete e.paused;
                this.status(e.anim, e.status);
            }
        }
        return this;
    };
    
    elproto.stop = function (anim) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.id == this.id && (!anim || animationElements[i].anim == anim)) {
            if (eve("raphael.anim.stop." + this.id, this, animationElements[i].anim) !== false) {
                animationElements.splice(i--, 1);
            }
        }
        return this;
    };
    function stopAnimation(paper) {
        for (var i = 0; i < animationElements.length; i++) if (animationElements[i].el.paper == paper) {
            animationElements.splice(i--, 1);
        }
    }
    eve.on("raphael.remove", stopAnimation);
    eve.on("raphael.clear", stopAnimation);
    elproto.toString = function () {
        return "Rapha\xebl\u2019s object";
    };

    // Set
    var Set = function (items) {
        this.items = [];
        this.length = 0;
        this.type = "set";
        if (items) {
            for (var i = 0, ii = items.length; i < ii; i++) {
                if (items[i] && (items[i].constructor == elproto.constructor || items[i].constructor == Set)) {
                    this[this.items.length] = this.items[this.items.length] = items[i];
                    this.length++;
                }
            }
        }
    },
    setproto = Set.prototype;
    
    setproto.push = function () {
        var item,
            len;
        for (var i = 0, ii = arguments.length; i < ii; i++) {
            item = arguments[i];
            if (item && (item.constructor == elproto.constructor || item.constructor == Set)) {
                len = this.items.length;
                this[len] = this.items[len] = item;
                this.length++;
            }
        }
        return this;
    };
    
    setproto.pop = function () {
        this.length && delete this[this.length--];
        return this.items.pop();
    };
    
    setproto.forEach = function (callback, thisArg) {
        for (var i = 0, ii = this.items.length; i < ii; i++) {
            if (callback.call(thisArg, this.items[i], i) === false) {
                return this;
            }
        }
        return this;
    };
    for (var method in elproto) if (elproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname][apply](el, arg);
                });
            };
        })(method);
    }
    setproto.attr = function (name, value) {
        if (name && R.is(name, array) && R.is(name[0], "object")) {
            for (var j = 0, jj = name.length; j < jj; j++) {
                this.items[j].attr(name[j]);
            }
        } else {
            for (var i = 0, ii = this.items.length; i < ii; i++) {
                this.items[i].attr(name, value);
            }
        }
        return this;
    };
    
    setproto.clear = function () {
        while (this.length) {
            this.pop();
        }
    };
    
    setproto.splice = function (index, count, insertion) {
        index = index < 0 ? mmax(this.length + index, 0) : index;
        count = mmax(0, mmin(this.length - index, count));
        var tail = [],
            todel = [],
            args = [],
            i;
        for (i = 2; i < arguments.length; i++) {
            args.push(arguments[i]);
        }
        for (i = 0; i < count; i++) {
            todel.push(this[index + i]);
        }
        for (; i < this.length - index; i++) {
            tail.push(this[index + i]);
        }
        var arglen = args.length;
        for (i = 0; i < arglen + tail.length; i++) {
            this.items[index + i] = this[index + i] = i < arglen ? args[i] : tail[i - arglen];
        }
        i = this.items.length = this.length -= count - arglen;
        while (this[i]) {
            delete this[i++];
        }
        return new Set(todel);
    };
    
    setproto.exclude = function (el) {
        for (var i = 0, ii = this.length; i < ii; i++) if (this[i] == el) {
            this.splice(i, 1);
            return true;
        }
    };
    setproto.animate = function (params, ms, easing, callback) {
        (R.is(easing, "function") || !easing) && (callback = easing || null);
        var len = this.items.length,
            i = len,
            item,
            set = this,
            collector;
        if (!len) {
            return this;
        }
        callback && (collector = function () {
            !--len && callback.call(set);
        });
        easing = R.is(easing, string) ? easing : collector;
        var anim = R.animation(params, ms, easing, collector);
        item = this.items[--i].animate(anim);
        while (i--) {
            this.items[i] && !this.items[i].removed && this.items[i].animateWith(item, anim, anim);
        }
        return this;
    };
    setproto.insertAfter = function (el) {
        var i = this.items.length;
        while (i--) {
            this.items[i].insertAfter(el);
        }
        return this;
    };
    setproto.getBBox = function () {
        var x = [],
            y = [],
            x2 = [],
            y2 = [];
        for (var i = this.items.length; i--;) if (!this.items[i].removed) {
            var box = this.items[i].getBBox();
            x.push(box.x);
            y.push(box.y);
            x2.push(box.x + box.width);
            y2.push(box.y + box.height);
        }
        x = mmin[apply](0, x);
        y = mmin[apply](0, y);
        x2 = mmax[apply](0, x2);
        y2 = mmax[apply](0, y2);
        return {
            x: x,
            y: y,
            x2: x2,
            y2: y2,
            width: x2 - x,
            height: y2 - y
        };
    };
    setproto.clone = function (s) {
        s = new Set;
        for (var i = 0, ii = this.items.length; i < ii; i++) {
            s.push(this.items[i].clone());
        }
        return s;
    };
    setproto.toString = function () {
        return "Rapha\xebl\u2018s set";
    };

    
    R.registerFont = function (font) {
        if (!font.face) {
            return font;
        }
        this.fonts = this.fonts || {};
        var fontcopy = {
                w: font.w,
                face: {},
                glyphs: {}
            },
            family = font.face["font-family"];
        for (var prop in font.face) if (font.face[has](prop)) {
            fontcopy.face[prop] = font.face[prop];
        }
        if (this.fonts[family]) {
            this.fonts[family].push(fontcopy);
        } else {
            this.fonts[family] = [fontcopy];
        }
        if (!font.svg) {
            fontcopy.face["units-per-em"] = toInt(font.face["units-per-em"], 10);
            for (var glyph in font.glyphs) if (font.glyphs[has](glyph)) {
                var path = font.glyphs[glyph];
                fontcopy.glyphs[glyph] = {
                    w: path.w,
                    k: {},
                    d: path.d && "M" + path.d.replace(/[mlcxtrv]/g, function (command) {
                            return {l: "L", c: "C", x: "z", t: "m", r: "l", v: "c"}[command] || "M";
                        }) + "z"
                };
                if (path.k) {
                    for (var k in path.k) if (path[has](k)) {
                        fontcopy.glyphs[glyph].k[k] = path.k[k];
                    }
                }
            }
        }
        return font;
    };
    
    paperproto.getFont = function (family, weight, style, stretch) {
        stretch = stretch || "normal";
        style = style || "normal";
        weight = +weight || {normal: 400, bold: 700, lighter: 300, bolder: 800}[weight] || 400;
        if (!R.fonts) {
            return;
        }
        var font = R.fonts[family];
        if (!font) {
            var name = new RegExp("(^|\\s)" + family.replace(/[^\w\d\s+!~.:_-]/g, E) + "(\\s|$)", "i");
            for (var fontName in R.fonts) if (R.fonts[has](fontName)) {
                if (name.test(fontName)) {
                    font = R.fonts[fontName];
                    break;
                }
            }
        }
        var thefont;
        if (font) {
            for (var i = 0, ii = font.length; i < ii; i++) {
                thefont = font[i];
                if (thefont.face["font-weight"] == weight && (thefont.face["font-style"] == style || !thefont.face["font-style"]) && thefont.face["font-stretch"] == stretch) {
                    break;
                }
            }
        }
        return thefont;
    };
    
    paperproto.print = function (x, y, string, font, size, origin, letter_spacing) {
        origin = origin || "middle"; // baseline|middle
        letter_spacing = mmax(mmin(letter_spacing || 0, 1), -1);
        var letters = Str(string)[split](E),
            shift = 0,
            notfirst = 0,
            path = E,
            scale;
        R.is(font, string) && (font = this.getFont(font));
        if (font) {
            scale = (size || 16) / font.face["units-per-em"];
            var bb = font.face.bbox[split](separator),
                top = +bb[0],
                lineHeight = bb[3] - bb[1],
                shifty = 0,
                height = +bb[1] + (origin == "baseline" ? lineHeight + (+font.face.descent) : lineHeight / 2);
            for (var i = 0, ii = letters.length; i < ii; i++) {
                if (letters[i] == "\n") {
                    shift = 0;
                    curr = 0;
                    notfirst = 0;
                    shifty += lineHeight;
                } else {
                    var prev = notfirst && font.glyphs[letters[i - 1]] || {},
                        curr = font.glyphs[letters[i]];
                    shift += notfirst ? (prev.w || font.w) + (prev.k && prev.k[letters[i]] || 0) + (font.w * letter_spacing) : 0;
                    notfirst = 1;
                }
                if (curr && curr.d) {
                    path += R.transformPath(curr.d, ["t", shift * scale, shifty * scale, "s", scale, scale, top, height, "t", (x - top) / scale, (y - height) / scale]);
                }
            }
        }
        return this.path(path).attr({
            fill: "#000",
            stroke: "none"
        });
    };

    
    paperproto.add = function (json) {
        if (R.is(json, "array")) {
            var res = this.set(),
                i = 0,
                ii = json.length,
                j;
            for (; i < ii; i++) {
                j = json[i] || {};
                elements[has](j.type) && res.push(this[j.type]().attr(j));
            }
        }
        return res;
    };

    
    R.format = function (token, params) {
        var args = R.is(params, array) ? [0][concat](params) : arguments;
        token && R.is(token, string) && args.length - 1 && (token = token.replace(formatrg, function (str, i) {
            return args[++i] == null ? E : args[i];
        }));
        return token || E;
    };
    
    R.fullfill = (function () {
        var tokenRegex = /\{([^\}]+)\}/g,
            objNotationRegex = /(?:(?:^|\.)(.+?)(?=\[|\.|$|\()|\[('|")(.+?)\2\])(\(\))?/g, // matches .xxxxx or ["xxxxx"] to run over object properties
            replacer = function (all, key, obj) {
                var res = obj;
                key.replace(objNotationRegex, function (all, name, quote, quotedName, isFunc) {
                    name = name || quotedName;
                    if (res) {
                        if (name in res) {
                            res = res[name];
                        }
                        typeof res == "function" && isFunc && (res = res());
                    }
                });
                res = (res == null || res == obj ? all : res) + "";
                return res;
            };
        return function (str, obj) {
            return String(str).replace(tokenRegex, function (all, key) {
                return replacer(all, key, obj);
            });
        };
    })();
    
    R.ninja = function () {
        oldRaphael.was ? (g.win.Raphael = oldRaphael.is) : delete Raphael;
        return R;
    };
    
    R.st = setproto;
    // Firefox <3.6 fix: http://webreflection.blogspot.com/2009/11/195-chars-to-help-lazy-loading.html
    (function (doc, loaded, f) {
        if (doc.readyState == null && doc.addEventListener){
            doc.addEventListener(loaded, f = function () {
                doc.removeEventListener(loaded, f, false);
                doc.readyState = "complete";
            }, false);
            doc.readyState = "loading";
        }
        function isLoaded() {
            (/in/).test(doc.readyState) ? setTimeout(isLoaded, 9) : R.eve("raphael.DOMload");
        }
        isLoaded();
    })(document, "DOMContentLoaded");

    oldRaphael.was ? (g.win.Raphael = R) : (Raphael = R);
    
    eve.on("raphael.DOMload", function () {
        loaded = true;
    });
})();


// ┌─────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël - JavaScript Vector Library                                 │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ SVG Module                                                          │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright (c) 2008-2011 Dmitry Baranovskiy (http://raphaeljs.com)   │ \\
// │ Copyright (c) 2008-2011 Sencha Labs (http://sencha.com)             │ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license. │ \\
// └─────────────────────────────────────────────────────────────────────┘ \\
window.Raphael.svg && function (R) {
    var has = "hasOwnProperty",
        Str = String,
        toFloat = parseFloat,
        toInt = parseInt,
        math = Math,
        mmax = math.max,
        abs = math.abs,
        pow = math.pow,
        separator = /[, ]+/,
        eve = R.eve,
        E = "",
        S = " ";
    var xlink = "http://www.w3.org/1999/xlink",
        markers = {
            block: "M5,0 0,2.5 5,5z",
            classic: "M5,0 0,2.5 5,5 3.5,3 3.5,2z",
            diamond: "M2.5,0 5,2.5 2.5,5 0,2.5z",
            open: "M6,1 1,3.5 6,6",
            oval: "M2.5,0A2.5,2.5,0,0,1,2.5,5 2.5,2.5,0,0,1,2.5,0z"
        },
        markerCounter = {};
    R.toString = function () {
        return  "Your browser supports SVG.\nYou are running Rapha\xebl " + this.version;
    };
    var $ = function (el, attr) {
        if (attr) {
            if (typeof el == "string") {
                el = $(el);
            }
            for (var key in attr) if (attr[has](key)) {
                if (key.substring(0, 6) == "xlink:") {
                    el.setAttributeNS(xlink, key.substring(6), Str(attr[key]));
                } else {
                    el.setAttribute(key, Str(attr[key]));
                }
            }
        } else {
            el = R._g.doc.createElementNS("http://www.w3.org/2000/svg", el);
            el.style && (el.style.webkitTapHighlightColor = "rgba(0,0,0,0)");
        }
        return el;
    },
    addGradientFill = function (element, gradient) {
        var type = "linear",
            id = element.id + gradient,
            fx = .5, fy = .5,
            o = element.node,
            SVG = element.paper,
            s = o.style,
            el = R._g.doc.getElementById(id);
        if (!el) {
            gradient = Str(gradient).replace(R._radial_gradient, function (all, _fx, _fy) {
                type = "radial";
                if (_fx && _fy) {
                    fx = toFloat(_fx);
                    fy = toFloat(_fy);
                    var dir = ((fy > .5) * 2 - 1);
                    pow(fx - .5, 2) + pow(fy - .5, 2) > .25 &&
                        (fy = math.sqrt(.25 - pow(fx - .5, 2)) * dir + .5) &&
                        fy != .5 &&
                        (fy = fy.toFixed(5) - 1e-5 * dir);
                }
                return E;
            });
            gradient = gradient.split(/\s*\-\s*/);
            if (type == "linear") {
                var angle = gradient.shift();
                angle = -toFloat(angle);
                if (isNaN(angle)) {
                    return null;
                }
                var vector = [0, 0, math.cos(R.rad(angle)), math.sin(R.rad(angle))],
                    max = 1 / (mmax(abs(vector[2]), abs(vector[3])) || 1);
                vector[2] *= max;
                vector[3] *= max;
                if (vector[2] < 0) {
                    vector[0] = -vector[2];
                    vector[2] = 0;
                }
                if (vector[3] < 0) {
                    vector[1] = -vector[3];
                    vector[3] = 0;
                }
            }
            var dots = R._parseDots(gradient);
            if (!dots) {
                return null;
            }
            id = id.replace(/[\(\)\s,\xb0#]/g, "_");
            
            if (element.gradient && id != element.gradient.id) {
                SVG.defs.removeChild(element.gradient);
                delete element.gradient;
            }

            if (!element.gradient) {
                el = $(type + "Gradient", {id: id});
                element.gradient = el;
                $(el, type == "radial" ? {
                    fx: fx,
                    fy: fy
                } : {
                    x1: vector[0],
                    y1: vector[1],
                    x2: vector[2],
                    y2: vector[3],
                    gradientTransform: element.matrix.invert()
                });
                SVG.defs.appendChild(el);
                for (var i = 0, ii = dots.length; i < ii; i++) {
                    el.appendChild($("stop", {
                        offset: dots[i].offset ? dots[i].offset : i ? "100%" : "0%",
                        "stop-color": dots[i].color || "#fff"
                    }));
                }
            }
        }
        $(o, {
            fill: "url(#" + id + ")",
            opacity: 1,
            "fill-opacity": 1
        });
        s.fill = E;
        s.opacity = 1;
        s.fillOpacity = 1;
        return 1;
    },
    updatePosition = function (o) {
        var bbox = o.getBBox(1);
        $(o.pattern, {patternTransform: o.matrix.invert() + " translate(" + bbox.x + "," + bbox.y + ")"});
    },
    addArrow = function (o, value, isEnd) {
        if (o.type == "path") {
            var values = Str(value).toLowerCase().split("-"),
                p = o.paper,
                se = isEnd ? "end" : "start",
                node = o.node,
                attrs = o.attrs,
                stroke = attrs["stroke-width"],
                i = values.length,
                type = "classic",
                from,
                to,
                dx,
                refX,
                attr,
                w = 3,
                h = 3,
                t = 5;
            while (i--) {
                switch (values[i]) {
                    case "block":
                    case "classic":
                    case "oval":
                    case "diamond":
                    case "open":
                    case "none":
                        type = values[i];
                        break;
                    case "wide": h = 5; break;
                    case "narrow": h = 2; break;
                    case "long": w = 5; break;
                    case "short": w = 2; break;
                }
            }
            if (type == "open") {
                w += 2;
                h += 2;
                t += 2;
                dx = 1;
                refX = isEnd ? 4 : 1;
                attr = {
                    fill: "none",
                    stroke: attrs.stroke
                };
            } else {
                refX = dx = w / 2;
                attr = {
                    fill: attrs.stroke,
                    stroke: "none"
                };
            }
            if (o._.arrows) {
                if (isEnd) {
                    o._.arrows.endPath && markerCounter[o._.arrows.endPath]--;
                    o._.arrows.endMarker && markerCounter[o._.arrows.endMarker]--;
                } else {
                    o._.arrows.startPath && markerCounter[o._.arrows.startPath]--;
                    o._.arrows.startMarker && markerCounter[o._.arrows.startMarker]--;
                }
            } else {
                o._.arrows = {};
            }
            if (type != "none") {
                var pathId = "raphael-marker-" + type,
                    markerId = "raphael-marker-" + se + type + w + h;
                if (!R._g.doc.getElementById(pathId)) {
                    p.defs.appendChild($($("path"), {
                        "stroke-linecap": "round",
                        d: markers[type],
                        id: pathId
                    }));
                    markerCounter[pathId] = 1;
                } else {
                    markerCounter[pathId]++;
                }
                var marker = R._g.doc.getElementById(markerId),
                    use;
                if (!marker) {
                    marker = $($("marker"), {
                        id: markerId,
                        markerHeight: h,
                        markerWidth: w,
                        orient: "auto",
                        refX: refX,
                        refY: h / 2
                    });
                    use = $($("use"), {
                        "xlink:href": "#" + pathId,
                        transform: (isEnd ? "rotate(180 " + w / 2 + " " + h / 2 + ") " : E) + "scale(" + w / t + "," + h / t + ")",
                        "stroke-width": (1 / ((w / t + h / t) / 2)).toFixed(4)
                    });
                    marker.appendChild(use);
                    p.defs.appendChild(marker);
                    markerCounter[markerId] = 1;
                } else {
                    markerCounter[markerId]++;
                    use = marker.getElementsByTagName("use")[0];
                }
                $(use, attr);
                var delta = dx * (type != "diamond" && type != "oval");
                if (isEnd) {
                    from = o._.arrows.startdx * stroke || 0;
                    to = R.getTotalLength(attrs.path) - delta * stroke;
                } else {
                    from = delta * stroke;
                    to = R.getTotalLength(attrs.path) - (o._.arrows.enddx * stroke || 0);
                }
                attr = {};
                attr["marker-" + se] = "url(#" + markerId + ")";
                if (to || from) {
                    attr.d = Raphael.getSubpath(attrs.path, from, to);
                }
                $(node, attr);
                o._.arrows[se + "Path"] = pathId;
                o._.arrows[se + "Marker"] = markerId;
                o._.arrows[se + "dx"] = delta;
                o._.arrows[se + "Type"] = type;
                o._.arrows[se + "String"] = value;
            } else {
                if (isEnd) {
                    from = o._.arrows.startdx * stroke || 0;
                    to = R.getTotalLength(attrs.path) - from;
                } else {
                    from = 0;
                    to = R.getTotalLength(attrs.path) - (o._.arrows.enddx * stroke || 0);
                }
                o._.arrows[se + "Path"] && $(node, {d: Raphael.getSubpath(attrs.path, from, to)});
                delete o._.arrows[se + "Path"];
                delete o._.arrows[se + "Marker"];
                delete o._.arrows[se + "dx"];
                delete o._.arrows[se + "Type"];
                delete o._.arrows[se + "String"];
            }
            for (attr in markerCounter) if (markerCounter[has](attr) && !markerCounter[attr]) {
                var item = R._g.doc.getElementById(attr);
                item && item.parentNode.removeChild(item);
            }
        }
    },
    dasharray = {
        "": [0],
        "none": [0],
        "-": [3, 1],
        ".": [1, 1],
        "-.": [3, 1, 1, 1],
        "-..": [3, 1, 1, 1, 1, 1],
        ". ": [1, 3],
        "- ": [4, 3],
        "--": [8, 3],
        "- .": [4, 3, 1, 3],
        "--.": [8, 3, 1, 3],
        "--..": [8, 3, 1, 3, 1, 3]
    },
    addDashes = function (o, value, params) {
        value = dasharray[Str(value).toLowerCase()];
        if (value) {
            var width = o.attrs["stroke-width"] || "1",
                butt = {round: width, square: width, butt: 0}[o.attrs["stroke-linecap"] || params["stroke-linecap"]] || 0,
                dashes = [],
                i = value.length;
            while (i--) {
                dashes[i] = value[i] * width + ((i % 2) ? 1 : -1) * butt;
            }
            $(o.node, {"stroke-dasharray": dashes.join(",")});
        }
    },
    setFillAndStroke = function (o, params) {
        var node = o.node,
            attrs = o.attrs,
            vis = node.style.visibility;
        node.style.visibility = "hidden";
        for (var att in params) {
            if (params[has](att)) {
                if (!R._availableAttrs[has](att)) {
                    continue;
                }
                var value = params[att];
                attrs[att] = value;
                switch (att) {
                    case "blur":
                        o.blur(value);
                        break;
                    case "href":
                    case "title":
                    case "target":
                        var pn = node.parentNode;
                        if (pn.tagName.toLowerCase() != "a") {
                            var hl = $("a");
                            pn.insertBefore(hl, node);
                            hl.appendChild(node);
                            pn = hl;
                        }
                        if (att == "target") {
                            pn.setAttributeNS(xlink, "show", value == "blank" ? "new" : value);
                        } else {
                            pn.setAttributeNS(xlink, att, value);
                        }
                        break;
                    case "cursor":
                        node.style.cursor = value;
                        break;
                    case "transform":
                        o.transform(value);
                        break;
                    case "arrow-start":
                        addArrow(o, value);
                        break;
                    case "arrow-end":
                        addArrow(o, value, 1);
                        break;
                    case "clip-rect":
                        var rect = Str(value).split(separator);
                        if (rect.length == 4) {
                            o.clip && o.clip.parentNode.parentNode.removeChild(o.clip.parentNode);
                            var el = $("clipPath"),
                                rc = $("rect");
                            el.id = R.createUUID();
                            $(rc, {
                                x: rect[0],
                                y: rect[1],
                                width: rect[2],
                                height: rect[3]
                            });
                            el.appendChild(rc);
                            o.paper.defs.appendChild(el);
                            $(node, {"clip-path": "url(#" + el.id + ")"});
                            o.clip = rc;
                        }
                        if (!value) {
                            var path = node.getAttribute("clip-path");
                            if (path) {
                                var clip = R._g.doc.getElementById(path.replace(/(^url\(#|\)$)/g, E));
                                clip && clip.parentNode.removeChild(clip);
                                $(node, {"clip-path": E});
                                delete o.clip;
                            }
                        }
                    break;
                    case "path":
                        if (o.type == "path") {
                            $(node, {d: value ? attrs.path = R._pathToAbsolute(value) : "M0,0"});
                            o._.dirty = 1;
                            if (o._.arrows) {
                                "startString" in o._.arrows && addArrow(o, o._.arrows.startString);
                                "endString" in o._.arrows && addArrow(o, o._.arrows.endString, 1);
                            }
                        }
                        break;
                    case "width":
                        node.setAttribute(att, value);
                        o._.dirty = 1;
                        if (attrs.fx) {
                            att = "x";
                            value = attrs.x;
                        } else {
                            break;
                        }
                    case "x":
                        if (attrs.fx) {
                            value = -attrs.x - (attrs.width || 0);
                        }
                    case "rx":
                        if (att == "rx" && o.type == "rect") {
                            break;
                        }
                    case "cx":
                        node.setAttribute(att, value);
                        o.pattern && updatePosition(o);
                        o._.dirty = 1;
                        break;
                    case "height":
                        node.setAttribute(att, value);
                        o._.dirty = 1;
                        if (attrs.fy) {
                            att = "y";
                            value = attrs.y;
                        } else {
                            break;
                        }
                    case "y":
                        if (attrs.fy) {
                            value = -attrs.y - (attrs.height || 0);
                        }
                    case "ry":
                        if (att == "ry" && o.type == "rect") {
                            break;
                        }
                    case "cy":
                        node.setAttribute(att, value);
                        o.pattern && updatePosition(o);
                        o._.dirty = 1;
                        break;
                    case "r":
                        if (o.type == "rect") {
                            $(node, {rx: value, ry: value});
                        } else {
                            node.setAttribute(att, value);
                        }
                        o._.dirty = 1;
                        break;
                    case "src":
                        if (o.type == "image") {
                            node.setAttributeNS(xlink, "href", value);
                        }
                        break;
                    case "stroke-width":
                        if (o._.sx != 1 || o._.sy != 1) {
                            value /= mmax(abs(o._.sx), abs(o._.sy)) || 1;
                        }
                        if (o.paper._vbSize) {
                            value *= o.paper._vbSize;
                        }
                        node.setAttribute(att, value);
                        if (attrs["stroke-dasharray"]) {
                            addDashes(o, attrs["stroke-dasharray"], params);
                        }
                        if (o._.arrows) {
                            "startString" in o._.arrows && addArrow(o, o._.arrows.startString);
                            "endString" in o._.arrows && addArrow(o, o._.arrows.endString, 1);
                        }
                        break;
                    case "stroke-dasharray":
                        addDashes(o, value, params);
                        break;
                    case "fill":
                        var isURL = Str(value).match(R._ISURL);
                        if (isURL) {
                            el = $("pattern");
                            var ig = $("image");
                            el.id = R.createUUID();
                            $(el, {x: 0, y: 0, patternUnits: "userSpaceOnUse", height: 1, width: 1});
                            $(ig, {x: 0, y: 0, "xlink:href": isURL[1]});
                            el.appendChild(ig);

                            (function (el) {
                                R._preload(isURL[1], function () {
                                    var w = this.offsetWidth,
                                        h = this.offsetHeight;
                                    $(el, {width: w, height: h});
                                    $(ig, {width: w, height: h});
                                    o.paper.safari();
                                });
                            })(el);
                            o.paper.defs.appendChild(el);
                            $(node, {fill: "url(#" + el.id + ")"});
                            o.pattern = el;
                            o.pattern && updatePosition(o);
                            break;
                        }
                        var clr = R.getRGB(value);
                        if (!clr.error) {
                            delete params.gradient;
                            delete attrs.gradient;
                            !R.is(attrs.opacity, "undefined") &&
                                R.is(params.opacity, "undefined") &&
                                $(node, {opacity: attrs.opacity});
                            !R.is(attrs["fill-opacity"], "undefined") &&
                                R.is(params["fill-opacity"], "undefined") &&
                                $(node, {"fill-opacity": attrs["fill-opacity"]});
                        } else if ((o.type == "circle" || o.type == "ellipse" || Str(value).charAt() != "r") && addGradientFill(o, value)) {
                            if ("opacity" in attrs || "fill-opacity" in attrs) {
                                var gradient = R._g.doc.getElementById(node.getAttribute("fill").replace(/^url\(#|\)$/g, E));
                                if (gradient) {
                                    var stops = gradient.getElementsByTagName("stop");
                                    $(stops[stops.length - 1], {"stop-opacity": ("opacity" in attrs ? attrs.opacity : 1) * ("fill-opacity" in attrs ? attrs["fill-opacity"] : 1)});
                                }
                            }
                            attrs.gradient = value;
                            attrs.fill = "none";
                            break;
                        }
                        clr[has]("opacity") && $(node, {"fill-opacity": clr.opacity > 1 ? clr.opacity / 100 : clr.opacity});
                    case "stroke":
                        clr = R.getRGB(value);
                        node.setAttribute(att, clr.hex);
                        att == "stroke" && clr[has]("opacity") && $(node, {"stroke-opacity": clr.opacity > 1 ? clr.opacity / 100 : clr.opacity});
                        if (att == "stroke" && o._.arrows) {
                            "startString" in o._.arrows && addArrow(o, o._.arrows.startString);
                            "endString" in o._.arrows && addArrow(o, o._.arrows.endString, 1);
                        }
                        break;
                    case "gradient":
                        (o.type == "circle" || o.type == "ellipse" || Str(value).charAt() != "r") && addGradientFill(o, value);
                        break;
                    case "opacity":
                        if (attrs.gradient && !attrs[has]("stroke-opacity")) {
                            $(node, {"stroke-opacity": value > 1 ? value / 100 : value});
                        }
                        // fall
                    case "fill-opacity":
                        if (attrs.gradient) {
                            gradient = R._g.doc.getElementById(node.getAttribute("fill").replace(/^url\(#|\)$/g, E));
                            if (gradient) {
                                stops = gradient.getElementsByTagName("stop");
                                $(stops[stops.length - 1], {"stop-opacity": value});
                            }
                            break;
                        }
                    default:
                        att == "font-size" && (value = toInt(value, 10) + "px");
                        var cssrule = att.replace(/(\-.)/g, function (w) {
                            return w.substring(1).toUpperCase();
                        });
                        node.style[cssrule] = value;
                        o._.dirty = 1;
                        node.setAttribute(att, value);
                        break;
                }
            }
        }

        tuneText(o, params);
        node.style.visibility = vis;
    },
    leading = 1.2,
    tuneText = function (el, params) {
        if (el.type != "text" || !(params[has]("text") || params[has]("font") || params[has]("font-size") || params[has]("x") || params[has]("y"))) {
            return;
        }
        var a = el.attrs,
            node = el.node,
            fontSize = node.firstChild ? toInt(R._g.doc.defaultView.getComputedStyle(node.firstChild, E).getPropertyValue("font-size"), 10) : 10;

        if (params[has]("text")) {
            a.text = params.text;
            while (node.firstChild) {
                node.removeChild(node.firstChild);
            }
            var texts = Str(params.text).split("\n"),
                tspans = [],
                tspan;
            for (var i = 0, ii = texts.length; i < ii; i++) {
                tspan = $("tspan");
                i && $(tspan, {dy: fontSize * leading, x: a.x});
                tspan.appendChild(R._g.doc.createTextNode(texts[i]));
                node.appendChild(tspan);
                tspans[i] = tspan;
            }
        } else {
            tspans = node.getElementsByTagName("tspan");
            for (i = 0, ii = tspans.length; i < ii; i++) if (i) {
                $(tspans[i], {dy: fontSize * leading, x: a.x});
            } else {
                $(tspans[0], {dy: 0});
            }
        }
        $(node, {x: a.x, y: a.y});
        el._.dirty = 1;
        var bb = el._getBBox(),
            dif = a.y - (bb.y + bb.height / 2);
        dif && R.is(dif, "finite") && $(tspans[0], {dy: dif});
    },
    Element = function (node, svg) {
        var X = 0,
            Y = 0;
        
        this[0] = this.node = node;
        
        node.raphael = true;
        
        this.id = R._oid++;
        node.raphaelid = this.id;
        this.matrix = R.matrix();
        this.realPath = null;
        
        this.paper = svg;
        this.attrs = this.attrs || {};
        this._ = {
            transform: [],
            sx: 1,
            sy: 1,
            deg: 0,
            dx: 0,
            dy: 0,
            dirty: 1
        };
        !svg.bottom && (svg.bottom = this);
        
        this.prev = svg.top;
        svg.top && (svg.top.next = this);
        svg.top = this;
        
        this.next = null;
    },
    elproto = R.el;

    Element.prototype = elproto;
    elproto.constructor = Element;

    R._engine.path = function (pathString, SVG) {
        var el = $("path");
        SVG.canvas && SVG.canvas.appendChild(el);
        var p = new Element(el, SVG);
        p.type = "path";
        setFillAndStroke(p, {
            fill: "none",
            stroke: "#000",
            path: pathString
        });
        return p;
    };
    
    elproto.rotate = function (deg, cx, cy) {
        if (this.removed) {
            return this;
        }
        deg = Str(deg).split(separator);
        if (deg.length - 1) {
            cx = toFloat(deg[1]);
            cy = toFloat(deg[2]);
        }
        deg = toFloat(deg[0]);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
            cx = bbox.x + bbox.width / 2;
            cy = bbox.y + bbox.height / 2;
        }
        this.transform(this._.transform.concat([["r", deg, cx, cy]]));
        return this;
    };
    
    elproto.scale = function (sx, sy, cx, cy) {
        if (this.removed) {
            return this;
        }
        sx = Str(sx).split(separator);
        if (sx.length - 1) {
            sy = toFloat(sx[1]);
            cx = toFloat(sx[2]);
            cy = toFloat(sx[3]);
        }
        sx = toFloat(sx[0]);
        (sy == null) && (sy = sx);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
        }
        cx = cx == null ? bbox.x + bbox.width / 2 : cx;
        cy = cy == null ? bbox.y + bbox.height / 2 : cy;
        this.transform(this._.transform.concat([["s", sx, sy, cx, cy]]));
        return this;
    };
    
    elproto.translate = function (dx, dy) {
        if (this.removed) {
            return this;
        }
        dx = Str(dx).split(separator);
        if (dx.length - 1) {
            dy = toFloat(dx[1]);
        }
        dx = toFloat(dx[0]) || 0;
        dy = +dy || 0;
        this.transform(this._.transform.concat([["t", dx, dy]]));
        return this;
    };
    
    elproto.transform = function (tstr) {
        var _ = this._;
        if (tstr == null) {
            return _.transform;
        }
        R._extractTransform(this, tstr);

        this.clip && $(this.clip, {transform: this.matrix.invert()});
        this.pattern && updatePosition(this);
        this.node && $(this.node, {transform: this.matrix});
    
        if (_.sx != 1 || _.sy != 1) {
            var sw = this.attrs[has]("stroke-width") ? this.attrs["stroke-width"] : 1;
            this.attr({"stroke-width": sw});
        }

        return this;
    };
    
    elproto.hide = function () {
        !this.removed && this.paper.safari(this.node.style.display = "none");
        return this;
    };
    
    elproto.show = function () {
        !this.removed && this.paper.safari(this.node.style.display = "");
        return this;
    };
    
    elproto.remove = function () {
        if (this.removed || !this.node.parentNode) {
            return;
        }
        var paper = this.paper;
        paper.__set__ && paper.__set__.exclude(this);
        eve.unbind("raphael.*.*." + this.id);
        if (this.gradient) {
            paper.defs.removeChild(this.gradient);
        }
        R._tear(this, paper);
        if (this.node.parentNode.tagName.toLowerCase() == "a") {
            this.node.parentNode.parentNode.removeChild(this.node.parentNode);
        } else {
            this.node.parentNode.removeChild(this.node);
        }
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
        this.removed = true;
    };
    elproto._getBBox = function () {
        if (this.node.style.display == "none") {
            this.show();
            var hide = true;
        }
        var bbox = {};
        try {
            bbox = this.node.getBBox();
        } catch(e) {
            // Firefox 3.0.x plays badly here
        } finally {
            bbox = bbox || {};
        }
        hide && this.hide();
        return bbox;
    };
    
    elproto.attr = function (name, value) {
        if (this.removed) {
            return this;
        }
        if (name == null) {
            var res = {};
            for (var a in this.attrs) if (this.attrs[has](a)) {
                res[a] = this.attrs[a];
            }
            res.gradient && res.fill == "none" && (res.fill = res.gradient) && delete res.gradient;
            res.transform = this._.transform;
            return res;
        }
        if (value == null && R.is(name, "string")) {
            if (name == "fill" && this.attrs.fill == "none" && this.attrs.gradient) {
                return this.attrs.gradient;
            }
            if (name == "transform") {
                return this._.transform;
            }
            var names = name.split(separator),
                out = {};
            for (var i = 0, ii = names.length; i < ii; i++) {
                name = names[i];
                if (name in this.attrs) {
                    out[name] = this.attrs[name];
                } else if (R.is(this.paper.customAttributes[name], "function")) {
                    out[name] = this.paper.customAttributes[name].def;
                } else {
                    out[name] = R._availableAttrs[name];
                }
            }
            return ii - 1 ? out : out[names[0]];
        }
        if (value == null && R.is(name, "array")) {
            out = {};
            for (i = 0, ii = name.length; i < ii; i++) {
                out[name[i]] = this.attr(name[i]);
            }
            return out;
        }
        if (value != null) {
            var params = {};
            params[name] = value;
        } else if (name != null && R.is(name, "object")) {
            params = name;
        }
        for (var key in params) {
            eve("raphael.attr." + key + "." + this.id, this, params[key]);
        }
        for (key in this.paper.customAttributes) if (this.paper.customAttributes[has](key) && params[has](key) && R.is(this.paper.customAttributes[key], "function")) {
            var par = this.paper.customAttributes[key].apply(this, [].concat(params[key]));
            this.attrs[key] = params[key];
            for (var subkey in par) if (par[has](subkey)) {
                params[subkey] = par[subkey];
            }
        }
        setFillAndStroke(this, params);
        return this;
    };
    
    elproto.toFront = function () {
        if (this.removed) {
            return this;
        }
        if (this.node.parentNode.tagName.toLowerCase() == "a") {
            this.node.parentNode.parentNode.appendChild(this.node.parentNode);
        } else {
            this.node.parentNode.appendChild(this.node);
        }
        var svg = this.paper;
        svg.top != this && R._tofront(this, svg);
        return this;
    };
    
    elproto.toBack = function () {
        if (this.removed) {
            return this;
        }
        var parent = this.node.parentNode;
        if (parent.tagName.toLowerCase() == "a") {
            parent.parentNode.insertBefore(this.node.parentNode, this.node.parentNode.parentNode.firstChild); 
        } else if (parent.firstChild != this.node) {
            parent.insertBefore(this.node, this.node.parentNode.firstChild);
        }
        R._toback(this, this.paper);
        var svg = this.paper;
        return this;
    };
    
    elproto.insertAfter = function (element) {
        if (this.removed) {
            return this;
        }
        var node = element.node || element[element.length - 1].node;
        if (node.nextSibling) {
            node.parentNode.insertBefore(this.node, node.nextSibling);
        } else {
            node.parentNode.appendChild(this.node);
        }
        R._insertafter(this, element, this.paper);
        return this;
    };
    
    elproto.insertBefore = function (element) {
        if (this.removed) {
            return this;
        }
        var node = element.node || element[0].node;
        node.parentNode.insertBefore(this.node, node);
        R._insertbefore(this, element, this.paper);
        return this;
    };
    elproto.blur = function (size) {
        // Experimental. No Safari support. Use it on your own risk.
        var t = this;
        if (+size !== 0) {
            var fltr = $("filter"),
                blur = $("feGaussianBlur");
            t.attrs.blur = size;
            fltr.id = R.createUUID();
            $(blur, {stdDeviation: +size || 1.5});
            fltr.appendChild(blur);
            t.paper.defs.appendChild(fltr);
            t._blur = fltr;
            $(t.node, {filter: "url(#" + fltr.id + ")"});
        } else {
            if (t._blur) {
                t._blur.parentNode.removeChild(t._blur);
                delete t._blur;
                delete t.attrs.blur;
            }
            t.node.removeAttribute("filter");
        }
    };
    R._engine.circle = function (svg, x, y, r) {
        var el = $("circle");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {cx: x, cy: y, r: r, fill: "none", stroke: "#000"};
        res.type = "circle";
        $(el, res.attrs);
        return res;
    };
    R._engine.rect = function (svg, x, y, w, h, r) {
        var el = $("rect");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {x: x, y: y, width: w, height: h, r: r || 0, rx: r || 0, ry: r || 0, fill: "none", stroke: "#000"};
        res.type = "rect";
        $(el, res.attrs);
        return res;
    };
    R._engine.ellipse = function (svg, x, y, rx, ry) {
        var el = $("ellipse");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {cx: x, cy: y, rx: rx, ry: ry, fill: "none", stroke: "#000"};
        res.type = "ellipse";
        $(el, res.attrs);
        return res;
    };
    R._engine.image = function (svg, src, x, y, w, h) {
        var el = $("image");
        $(el, {x: x, y: y, width: w, height: h, preserveAspectRatio: "none"});
        el.setAttributeNS(xlink, "href", src);
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {x: x, y: y, width: w, height: h, src: src};
        res.type = "image";
        return res;
    };
    R._engine.text = function (svg, x, y, text) {
        var el = $("text");
        svg.canvas && svg.canvas.appendChild(el);
        var res = new Element(el, svg);
        res.attrs = {
            x: x,
            y: y,
            "text-anchor": "middle",
            text: text,
            font: R._availableAttrs.font,
            stroke: "none",
            fill: "#000"
        };
        res.type = "text";
        setFillAndStroke(res, res.attrs);
        return res;
    };
    R._engine.setSize = function (width, height) {
        this.width = width || this.width;
        this.height = height || this.height;
        this.canvas.setAttribute("width", this.width);
        this.canvas.setAttribute("height", this.height);
        if (this._viewBox) {
            this.setViewBox.apply(this, this._viewBox);
        }
        return this;
    };
    R._engine.create = function () {
        var con = R._getContainer.apply(0, arguments),
            container = con && con.container,
            x = con.x,
            y = con.y,
            width = con.width,
            height = con.height;
        if (!container) {
            throw new Error("SVG container not found.");
        }
        var cnvs = $("svg"),
            css = "overflow:hidden;",
            isFloating;
        x = x || 0;
        y = y || 0;
        width = width || 512;
        height = height || 342;
        $(cnvs, {
            height: height,
            version: 1.1,
            width: width,
            xmlns: "http://www.w3.org/2000/svg"
        });
        if (container == 1) {
            cnvs.style.cssText = css + "position:absolute;left:" + x + "px;top:" + y + "px";
            R._g.doc.body.appendChild(cnvs);
            isFloating = 1;
        } else {
            cnvs.style.cssText = css + "position:relative";
            if (container.firstChild) {
                container.insertBefore(cnvs, container.firstChild);
            } else {
                container.appendChild(cnvs);
            }
        }
        container = new R._Paper;
        container.width = width;
        container.height = height;
        container.canvas = cnvs;
        container.clear();
        container._left = container._top = 0;
        isFloating && (container.renderfix = function () {});
        container.renderfix();
        return container;
    };
    R._engine.setViewBox = function (x, y, w, h, fit) {
        eve("raphael.setViewBox", this, this._viewBox, [x, y, w, h, fit]);
        var size = mmax(w / this.width, h / this.height),
            top = this.top,
            aspectRatio = fit ? "meet" : "xMinYMin",
            vb,
            sw;
        if (x == null) {
            if (this._vbSize) {
                size = 1;
            }
            delete this._vbSize;
            vb = "0 0 " + this.width + S + this.height;
        } else {
            this._vbSize = size;
            vb = x + S + y + S + w + S + h;
        }
        $(this.canvas, {
            viewBox: vb,
            preserveAspectRatio: aspectRatio
        });
        while (size && top) {
            sw = "stroke-width" in top.attrs ? top.attrs["stroke-width"] : 1;
            top.attr({"stroke-width": sw});
            top._.dirty = 1;
            top._.dirtyT = 1;
            top = top.prev;
        }
        this._viewBox = [x, y, w, h, !!fit];
        return this;
    };
    
    R.prototype.renderfix = function () {
        var cnvs = this.canvas,
            s = cnvs.style,
            pos;
        try {
            pos = cnvs.getScreenCTM() || cnvs.createSVGMatrix();
        } catch (e) {
            pos = cnvs.createSVGMatrix();
        }
        var left = -pos.e % 1,
            top = -pos.f % 1;
        if (left || top) {
            if (left) {
                this._left = (this._left + left) % 1;
                s.left = this._left + "px";
            }
            if (top) {
                this._top = (this._top + top) % 1;
                s.top = this._top + "px";
            }
        }
    };
    
    R.prototype.clear = function () {
        R.eve("raphael.clear", this);
        var c = this.canvas;
        while (c.firstChild) {
            c.removeChild(c.firstChild);
        }
        this.bottom = this.top = null;
        (this.desc = $("desc")).appendChild(R._g.doc.createTextNode("Created with Rapha\xebl " + R.version));
        c.appendChild(this.desc);
        c.appendChild(this.defs = $("defs"));
    };
    
    R.prototype.remove = function () {
        eve("raphael.remove", this);
        this.canvas.parentNode && this.canvas.parentNode.removeChild(this.canvas);
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
    };
    var setproto = R.st;
    for (var method in elproto) if (elproto[has](method) && !setproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname].apply(el, arg);
                });
            };
        })(method);
    }
}(window.Raphael);

// ┌─────────────────────────────────────────────────────────────────────┐ \\
// │ Raphaël - JavaScript Vector Library                                 │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ VML Module                                                          │ \\
// ├─────────────────────────────────────────────────────────────────────┤ \\
// │ Copyright (c) 2008-2011 Dmitry Baranovskiy (http://raphaeljs.com)   │ \\
// │ Copyright (c) 2008-2011 Sencha Labs (http://sencha.com)             │ \\
// │ Licensed under the MIT (http://raphaeljs.com/license.html) license. │ \\
// └─────────────────────────────────────────────────────────────────────┘ \\
window.Raphael.vml && function (R) {
    var has = "hasOwnProperty",
        Str = String,
        toFloat = parseFloat,
        math = Math,
        round = math.round,
        mmax = math.max,
        mmin = math.min,
        abs = math.abs,
        fillString = "fill",
        separator = /[, ]+/,
        eve = R.eve,
        ms = " progid:DXImageTransform.Microsoft",
        S = " ",
        E = "",
        map = {M: "m", L: "l", C: "c", Z: "x", m: "t", l: "r", c: "v", z: "x"},
        bites = /([clmz]),?([^clmz]*)/gi,
        blurregexp = / progid:\S+Blur\([^\)]+\)/g,
        val = /-?[^,\s-]+/g,
        cssDot = "position:absolute;left:0;top:0;width:1px;height:1px",
        zoom = 21600,
        pathTypes = {path: 1, rect: 1, image: 1},
        ovalTypes = {circle: 1, ellipse: 1},
        path2vml = function (path) {
            var total =  /[ahqstv]/ig,
                command = R._pathToAbsolute;
            Str(path).match(total) && (command = R._path2curve);
            total = /[clmz]/g;
            if (command == R._pathToAbsolute && !Str(path).match(total)) {
                var res = Str(path).replace(bites, function (all, command, args) {
                    var vals = [],
                        isMove = command.toLowerCase() == "m",
                        res = map[command];
                    args.replace(val, function (value) {
                        if (isMove && vals.length == 2) {
                            res += vals + map[command == "m" ? "l" : "L"];
                            vals = [];
                        }
                        vals.push(round(value * zoom));
                    });
                    return res + vals;
                });
                return res;
            }
            var pa = command(path), p, r;
            res = [];
            for (var i = 0, ii = pa.length; i < ii; i++) {
                p = pa[i];
                r = pa[i][0].toLowerCase();
                r == "z" && (r = "x");
                for (var j = 1, jj = p.length; j < jj; j++) {
                    r += round(p[j] * zoom) + (j != jj - 1 ? "," : E);
                }
                res.push(r);
            }
            return res.join(S);
        },
        compensation = function (deg, dx, dy) {
            var m = R.matrix();
            m.rotate(-deg, .5, .5);
            return {
                dx: m.x(dx, dy),
                dy: m.y(dx, dy)
            };
        },
        setCoords = function (p, sx, sy, dx, dy, deg) {
            var _ = p._,
                m = p.matrix,
                fillpos = _.fillpos,
                o = p.node,
                s = o.style,
                y = 1,
                flip = "",
                dxdy,
                kx = zoom / sx,
                ky = zoom / sy;
            s.visibility = "hidden";
            if (!sx || !sy) {
                return;
            }
            o.coordsize = abs(kx) + S + abs(ky);
            s.rotation = deg * (sx * sy < 0 ? -1 : 1);
            if (deg) {
                var c = compensation(deg, dx, dy);
                dx = c.dx;
                dy = c.dy;
            }
            sx < 0 && (flip += "x");
            sy < 0 && (flip += " y") && (y = -1);
            s.flip = flip;
            o.coordorigin = (dx * -kx) + S + (dy * -ky);
            if (fillpos || _.fillsize) {
                var fill = o.getElementsByTagName(fillString);
                fill = fill && fill[0];
                o.removeChild(fill);
                if (fillpos) {
                    c = compensation(deg, m.x(fillpos[0], fillpos[1]), m.y(fillpos[0], fillpos[1]));
                    fill.position = c.dx * y + S + c.dy * y;
                }
                if (_.fillsize) {
                    fill.size = _.fillsize[0] * abs(sx) + S + _.fillsize[1] * abs(sy);
                }
                o.appendChild(fill);
            }
            s.visibility = "visible";
        };
    R.toString = function () {
        return  "Your browser doesn\u2019t support SVG. Falling down to VML.\nYou are running Rapha\xebl " + this.version;
    };
    var addArrow = function (o, value, isEnd) {
        var values = Str(value).toLowerCase().split("-"),
            se = isEnd ? "end" : "start",
            i = values.length,
            type = "classic",
            w = "medium",
            h = "medium";
        while (i--) {
            switch (values[i]) {
                case "block":
                case "classic":
                case "oval":
                case "diamond":
                case "open":
                case "none":
                    type = values[i];
                    break;
                case "wide":
                case "narrow": h = values[i]; break;
                case "long":
                case "short": w = values[i]; break;
            }
        }
        var stroke = o.node.getElementsByTagName("stroke")[0];
        stroke[se + "arrow"] = type;
        stroke[se + "arrowlength"] = w;
        stroke[se + "arrowwidth"] = h;
    },
    setFillAndStroke = function (o, params) {
        // o.paper.canvas.style.display = "none";
        o.attrs = o.attrs || {};
        var node = o.node,
            a = o.attrs,
            s = node.style,
            xy,
            newpath = pathTypes[o.type] && (params.x != a.x || params.y != a.y || params.width != a.width || params.height != a.height || params.cx != a.cx || params.cy != a.cy || params.rx != a.rx || params.ry != a.ry || params.r != a.r),
            isOval = ovalTypes[o.type] && (a.cx != params.cx || a.cy != params.cy || a.r != params.r || a.rx != params.rx || a.ry != params.ry),
            res = o;


        for (var par in params) if (params[has](par)) {
            a[par] = params[par];
        }
        if (newpath) {
            a.path = R._getPath[o.type](o);
            o._.dirty = 1;
        }
        params.href && (node.href = params.href);
        params.title && (node.title = params.title);
        params.target && (node.target = params.target);
        params.cursor && (s.cursor = params.cursor);
        "blur" in params && o.blur(params.blur);
        if (params.path && o.type == "path" || newpath) {
            node.path = path2vml(~Str(a.path).toLowerCase().indexOf("r") ? R._pathToAbsolute(a.path) : a.path);
            if (o.type == "image") {
                o._.fillpos = [a.x, a.y];
                o._.fillsize = [a.width, a.height];
                setCoords(o, 1, 1, 0, 0, 0);
            }
        }
        "transform" in params && o.transform(params.transform);
        if (isOval) {
            var cx = +a.cx,
                cy = +a.cy,
                rx = +a.rx || +a.r || 0,
                ry = +a.ry || +a.r || 0;
            node.path = R.format("ar{0},{1},{2},{3},{4},{1},{4},{1}x", round((cx - rx) * zoom), round((cy - ry) * zoom), round((cx + rx) * zoom), round((cy + ry) * zoom), round(cx * zoom));
        }
        if ("clip-rect" in params) {
            var rect = Str(params["clip-rect"]).split(separator);
            if (rect.length == 4) {
                rect[2] = +rect[2] + (+rect[0]);
                rect[3] = +rect[3] + (+rect[1]);
                var div = node.clipRect || R._g.doc.createElement("div"),
                    dstyle = div.style;
                dstyle.clip = R.format("rect({1}px {2}px {3}px {0}px)", rect);
                if (!node.clipRect) {
                    dstyle.position = "absolute";
                    dstyle.top = 0;
                    dstyle.left = 0;
                    dstyle.width = o.paper.width + "px";
                    dstyle.height = o.paper.height + "px";
                    node.parentNode.insertBefore(div, node);
                    div.appendChild(node);
                    node.clipRect = div;
                }
            }
            if (!params["clip-rect"]) {
                node.clipRect && (node.clipRect.style.clip = "auto");
            }
        }
        if (o.textpath) {
            var textpathStyle = o.textpath.style;
            params.font && (textpathStyle.font = params.font);
            params["font-family"] && (textpathStyle.fontFamily = '"' + params["font-family"].split(",")[0].replace(/^['"]+|['"]+$/g, E) + '"');
            params["font-size"] && (textpathStyle.fontSize = params["font-size"]);
            params["font-weight"] && (textpathStyle.fontWeight = params["font-weight"]);
            params["font-style"] && (textpathStyle.fontStyle = params["font-style"]);
        }
        if ("arrow-start" in params) {
            addArrow(res, params["arrow-start"]);
        }
        if ("arrow-end" in params) {
            addArrow(res, params["arrow-end"], 1);
        }
        if (params.opacity != null || 
            params["stroke-width"] != null ||
            params.fill != null ||
            params.src != null ||
            params.stroke != null ||
            params["stroke-width"] != null ||
            params["stroke-opacity"] != null ||
            params["fill-opacity"] != null ||
            params["stroke-dasharray"] != null ||
            params["stroke-miterlimit"] != null ||
            params["stroke-linejoin"] != null ||
            params["stroke-linecap"] != null) {
            var fill = node.getElementsByTagName(fillString),
                newfill = false;
            fill = fill && fill[0];
            !fill && (newfill = fill = createNode(fillString));
            if (o.type == "image" && params.src) {
                fill.src = params.src;
            }
            params.fill && (fill.on = true);
            if (fill.on == null || params.fill == "none" || params.fill === null) {
                fill.on = false;
            }
            if (fill.on && params.fill) {
                var isURL = Str(params.fill).match(R._ISURL);
                if (isURL) {
                    fill.parentNode == node && node.removeChild(fill);
                    fill.rotate = true;
                    fill.src = isURL[1];
                    fill.type = "tile";
                    var bbox = o.getBBox(1);
                    fill.position = bbox.x + S + bbox.y;
                    o._.fillpos = [bbox.x, bbox.y];

                    R._preload(isURL[1], function () {
                        o._.fillsize = [this.offsetWidth, this.offsetHeight];
                    });
                } else {
                    fill.color = R.getRGB(params.fill).hex;
                    fill.src = E;
                    fill.type = "solid";
                    if (R.getRGB(params.fill).error && (res.type in {circle: 1, ellipse: 1} || Str(params.fill).charAt() != "r") && addGradientFill(res, params.fill, fill)) {
                        a.fill = "none";
                        a.gradient = params.fill;
                        fill.rotate = false;
                    }
                }
            }
            if ("fill-opacity" in params || "opacity" in params) {
                var opacity = ((+a["fill-opacity"] + 1 || 2) - 1) * ((+a.opacity + 1 || 2) - 1) * ((+R.getRGB(params.fill).o + 1 || 2) - 1);
                opacity = mmin(mmax(opacity, 0), 1);
                fill.opacity = opacity;
                if (fill.src) {
                    fill.color = "none";
                }
            }
            node.appendChild(fill);
            var stroke = (node.getElementsByTagName("stroke") && node.getElementsByTagName("stroke")[0]),
            newstroke = false;
            !stroke && (newstroke = stroke = createNode("stroke"));
            if ((params.stroke && params.stroke != "none") ||
                params["stroke-width"] ||
                params["stroke-opacity"] != null ||
                params["stroke-dasharray"] ||
                params["stroke-miterlimit"] ||
                params["stroke-linejoin"] ||
                params["stroke-linecap"]) {
                stroke.on = true;
            }
            (params.stroke == "none" || params.stroke === null || stroke.on == null || params.stroke == 0 || params["stroke-width"] == 0) && (stroke.on = false);
            var strokeColor = R.getRGB(params.stroke);
            stroke.on && params.stroke && (stroke.color = strokeColor.hex);
            opacity = ((+a["stroke-opacity"] + 1 || 2) - 1) * ((+a.opacity + 1 || 2) - 1) * ((+strokeColor.o + 1 || 2) - 1);
            var width = (toFloat(params["stroke-width"]) || 1) * .75;
            opacity = mmin(mmax(opacity, 0), 1);
            params["stroke-width"] == null && (width = a["stroke-width"]);
            params["stroke-width"] && (stroke.weight = width);
            width && width < 1 && (opacity *= width) && (stroke.weight = 1);
            stroke.opacity = opacity;
        
            params["stroke-linejoin"] && (stroke.joinstyle = params["stroke-linejoin"] || "miter");
            stroke.miterlimit = params["stroke-miterlimit"] || 8;
            params["stroke-linecap"] && (stroke.endcap = params["stroke-linecap"] == "butt" ? "flat" : params["stroke-linecap"] == "square" ? "square" : "round");
            if (params["stroke-dasharray"]) {
                var dasharray = {
                    "-": "shortdash",
                    ".": "shortdot",
                    "-.": "shortdashdot",
                    "-..": "shortdashdotdot",
                    ". ": "dot",
                    "- ": "dash",
                    "--": "longdash",
                    "- .": "dashdot",
                    "--.": "longdashdot",
                    "--..": "longdashdotdot"
                };
                stroke.dashstyle = dasharray[has](params["stroke-dasharray"]) ? dasharray[params["stroke-dasharray"]] : E;
            }
            newstroke && node.appendChild(stroke);
        }
        if (res.type == "text") {
            res.paper.canvas.style.display = E;
            var span = res.paper.span,
                m = 100,
                fontSize = a.font && a.font.match(/\d+(?:\.\d*)?(?=px)/);
            s = span.style;
            a.font && (s.font = a.font);
            a["font-family"] && (s.fontFamily = a["font-family"]);
            a["font-weight"] && (s.fontWeight = a["font-weight"]);
            a["font-style"] && (s.fontStyle = a["font-style"]);
            fontSize = toFloat(a["font-size"] || fontSize && fontSize[0]) || 10;
            s.fontSize = fontSize * m + "px";
            res.textpath.string && (span.innerHTML = Str(res.textpath.string).replace(/</g, "&#60;").replace(/&/g, "&#38;").replace(/\n/g, "<br>"));
            var brect = span.getBoundingClientRect();
            res.W = a.w = (brect.right - brect.left) / m;
            res.H = a.h = (brect.bottom - brect.top) / m;
            // res.paper.canvas.style.display = "none";
            res.X = a.x;
            res.Y = a.y + res.H / 2;

            ("x" in params || "y" in params) && (res.path.v = R.format("m{0},{1}l{2},{1}", round(a.x * zoom), round(a.y * zoom), round(a.x * zoom) + 1));
            var dirtyattrs = ["x", "y", "text", "font", "font-family", "font-weight", "font-style", "font-size"];
            for (var d = 0, dd = dirtyattrs.length; d < dd; d++) if (dirtyattrs[d] in params) {
                res._.dirty = 1;
                break;
            }
        
            // text-anchor emulation
            switch (a["text-anchor"]) {
                case "start":
                    res.textpath.style["v-text-align"] = "left";
                    res.bbx = res.W / 2;
                break;
                case "end":
                    res.textpath.style["v-text-align"] = "right";
                    res.bbx = -res.W / 2;
                break;
                default:
                    res.textpath.style["v-text-align"] = "center";
                    res.bbx = 0;
                break;
            }
            res.textpath.style["v-text-kern"] = true;
        }
        // res.paper.canvas.style.display = E;
    },
    addGradientFill = function (o, gradient, fill) {
        o.attrs = o.attrs || {};
        var attrs = o.attrs,
            pow = Math.pow,
            opacity,
            oindex,
            type = "linear",
            fxfy = ".5 .5";
        o.attrs.gradient = gradient;
        gradient = Str(gradient).replace(R._radial_gradient, function (all, fx, fy) {
            type = "radial";
            if (fx && fy) {
                fx = toFloat(fx);
                fy = toFloat(fy);
                pow(fx - .5, 2) + pow(fy - .5, 2) > .25 && (fy = math.sqrt(.25 - pow(fx - .5, 2)) * ((fy > .5) * 2 - 1) + .5);
                fxfy = fx + S + fy;
            }
            return E;
        });
        gradient = gradient.split(/\s*\-\s*/);
        if (type == "linear") {
            var angle = gradient.shift();
            angle = -toFloat(angle);
            if (isNaN(angle)) {
                return null;
            }
        }
        var dots = R._parseDots(gradient);
        if (!dots) {
            return null;
        }
        o = o.shape || o.node;
        if (dots.length) {
            o.removeChild(fill);
            fill.on = true;
            fill.method = "none";
            fill.color = dots[0].color;
            fill.color2 = dots[dots.length - 1].color;
            var clrs = [];
            for (var i = 0, ii = dots.length; i < ii; i++) {
                dots[i].offset && clrs.push(dots[i].offset + S + dots[i].color);
            }
            fill.colors = clrs.length ? clrs.join() : "0% " + fill.color;
            if (type == "radial") {
                fill.type = "gradientTitle";
                fill.focus = "100%";
                fill.focussize = "0 0";
                fill.focusposition = fxfy;
                fill.angle = 0;
            } else {
                // fill.rotate= true;
                fill.type = "gradient";
                fill.angle = (270 - angle) % 360;
            }
            o.appendChild(fill);
        }
        return 1;
    },
    Element = function (node, vml) {
        this[0] = this.node = node;
        node.raphael = true;
        this.id = R._oid++;
        node.raphaelid = this.id;
        this.X = 0;
        this.Y = 0;
        this.attrs = {};
        this.paper = vml;
        this.matrix = R.matrix();
        this._ = {
            transform: [],
            sx: 1,
            sy: 1,
            dx: 0,
            dy: 0,
            deg: 0,
            dirty: 1,
            dirtyT: 1
        };
        !vml.bottom && (vml.bottom = this);
        this.prev = vml.top;
        vml.top && (vml.top.next = this);
        vml.top = this;
        this.next = null;
    };
    var elproto = R.el;

    Element.prototype = elproto;
    elproto.constructor = Element;
    elproto.transform = function (tstr) {
        if (tstr == null) {
            return this._.transform;
        }
        var vbs = this.paper._viewBoxShift,
            vbt = vbs ? "s" + [vbs.scale, vbs.scale] + "-1-1t" + [vbs.dx, vbs.dy] : E,
            oldt;
        if (vbs) {
            oldt = tstr = Str(tstr).replace(/\.{3}|\u2026/g, this._.transform || E);
        }
        R._extractTransform(this, vbt + tstr);
        var matrix = this.matrix.clone(),
            skew = this.skew,
            o = this.node,
            split,
            isGrad = ~Str(this.attrs.fill).indexOf("-"),
            isPatt = !Str(this.attrs.fill).indexOf("url(");
        matrix.translate(-.5, -.5);
        if (isPatt || isGrad || this.type == "image") {
            skew.matrix = "1 0 0 1";
            skew.offset = "0 0";
            split = matrix.split();
            if ((isGrad && split.noRotation) || !split.isSimple) {
                o.style.filter = matrix.toFilter();
                var bb = this.getBBox(),
                    bbt = this.getBBox(1),
                    dx = bb.x - bbt.x,
                    dy = bb.y - bbt.y;
                o.coordorigin = (dx * -zoom) + S + (dy * -zoom);
                setCoords(this, 1, 1, dx, dy, 0);
            } else {
                o.style.filter = E;
                setCoords(this, split.scalex, split.scaley, split.dx, split.dy, split.rotate);
            }
        } else {
            o.style.filter = E;
            skew.matrix = Str(matrix);
            skew.offset = matrix.offset();
        }
        oldt && (this._.transform = oldt);
        return this;
    };
    elproto.rotate = function (deg, cx, cy) {
        if (this.removed) {
            return this;
        }
        if (deg == null) {
            return;
        }
        deg = Str(deg).split(separator);
        if (deg.length - 1) {
            cx = toFloat(deg[1]);
            cy = toFloat(deg[2]);
        }
        deg = toFloat(deg[0]);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
            cx = bbox.x + bbox.width / 2;
            cy = bbox.y + bbox.height / 2;
        }
        this._.dirtyT = 1;
        this.transform(this._.transform.concat([["r", deg, cx, cy]]));
        return this;
    };
    elproto.translate = function (dx, dy) {
        if (this.removed) {
            return this;
        }
        dx = Str(dx).split(separator);
        if (dx.length - 1) {
            dy = toFloat(dx[1]);
        }
        dx = toFloat(dx[0]) || 0;
        dy = +dy || 0;
        if (this._.bbox) {
            this._.bbox.x += dx;
            this._.bbox.y += dy;
        }
        this.transform(this._.transform.concat([["t", dx, dy]]));
        return this;
    };
    elproto.scale = function (sx, sy, cx, cy) {
        if (this.removed) {
            return this;
        }
        sx = Str(sx).split(separator);
        if (sx.length - 1) {
            sy = toFloat(sx[1]);
            cx = toFloat(sx[2]);
            cy = toFloat(sx[3]);
            isNaN(cx) && (cx = null);
            isNaN(cy) && (cy = null);
        }
        sx = toFloat(sx[0]);
        (sy == null) && (sy = sx);
        (cy == null) && (cx = cy);
        if (cx == null || cy == null) {
            var bbox = this.getBBox(1);
        }
        cx = cx == null ? bbox.x + bbox.width / 2 : cx;
        cy = cy == null ? bbox.y + bbox.height / 2 : cy;
    
        this.transform(this._.transform.concat([["s", sx, sy, cx, cy]]));
        this._.dirtyT = 1;
        return this;
    };
    elproto.hide = function () {
        !this.removed && (this.node.style.display = "none");
        return this;
    };
    elproto.show = function () {
        !this.removed && (this.node.style.display = E);
        return this;
    };
    elproto._getBBox = function () {
        if (this.removed) {
            return {};
        }
        return {
            x: this.X + (this.bbx || 0) - this.W / 2,
            y: this.Y - this.H,
            width: this.W,
            height: this.H
        };
    };
    elproto.remove = function () {
        if (this.removed || !this.node.parentNode) {
            return;
        }
        this.paper.__set__ && this.paper.__set__.exclude(this);
        R.eve.unbind("raphael.*.*." + this.id);
        R._tear(this, this.paper);
        this.node.parentNode.removeChild(this.node);
        this.shape && this.shape.parentNode.removeChild(this.shape);
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
        this.removed = true;
    };
    elproto.attr = function (name, value) {
        if (this.removed) {
            return this;
        }
        if (name == null) {
            var res = {};
            for (var a in this.attrs) if (this.attrs[has](a)) {
                res[a] = this.attrs[a];
            }
            res.gradient && res.fill == "none" && (res.fill = res.gradient) && delete res.gradient;
            res.transform = this._.transform;
            return res;
        }
        if (value == null && R.is(name, "string")) {
            if (name == fillString && this.attrs.fill == "none" && this.attrs.gradient) {
                return this.attrs.gradient;
            }
            var names = name.split(separator),
                out = {};
            for (var i = 0, ii = names.length; i < ii; i++) {
                name = names[i];
                if (name in this.attrs) {
                    out[name] = this.attrs[name];
                } else if (R.is(this.paper.customAttributes[name], "function")) {
                    out[name] = this.paper.customAttributes[name].def;
                } else {
                    out[name] = R._availableAttrs[name];
                }
            }
            return ii - 1 ? out : out[names[0]];
        }
        if (this.attrs && value == null && R.is(name, "array")) {
            out = {};
            for (i = 0, ii = name.length; i < ii; i++) {
                out[name[i]] = this.attr(name[i]);
            }
            return out;
        }
        var params;
        if (value != null) {
            params = {};
            params[name] = value;
        }
        value == null && R.is(name, "object") && (params = name);
        for (var key in params) {
            eve("raphael.attr." + key + "." + this.id, this, params[key]);
        }
        if (params) {
            for (key in this.paper.customAttributes) if (this.paper.customAttributes[has](key) && params[has](key) && R.is(this.paper.customAttributes[key], "function")) {
                var par = this.paper.customAttributes[key].apply(this, [].concat(params[key]));
                this.attrs[key] = params[key];
                for (var subkey in par) if (par[has](subkey)) {
                    params[subkey] = par[subkey];
                }
            }
            // this.paper.canvas.style.display = "none";
            if (params.text && this.type == "text") {
                this.textpath.string = params.text;
            }
            setFillAndStroke(this, params);
            // this.paper.canvas.style.display = E;
        }
        return this;
    };
    elproto.toFront = function () {
        !this.removed && this.node.parentNode.appendChild(this.node);
        this.paper && this.paper.top != this && R._tofront(this, this.paper);
        return this;
    };
    elproto.toBack = function () {
        if (this.removed) {
            return this;
        }
        if (this.node.parentNode.firstChild != this.node) {
            this.node.parentNode.insertBefore(this.node, this.node.parentNode.firstChild);
            R._toback(this, this.paper);
        }
        return this;
    };
    elproto.insertAfter = function (element) {
        if (this.removed) {
            return this;
        }
        if (element.constructor == R.st.constructor) {
            element = element[element.length - 1];
        }
        if (element.node.nextSibling) {
            element.node.parentNode.insertBefore(this.node, element.node.nextSibling);
        } else {
            element.node.parentNode.appendChild(this.node);
        }
        R._insertafter(this, element, this.paper);
        return this;
    };
    elproto.insertBefore = function (element) {
        if (this.removed) {
            return this;
        }
        if (element.constructor == R.st.constructor) {
            element = element[0];
        }
        element.node.parentNode.insertBefore(this.node, element.node);
        R._insertbefore(this, element, this.paper);
        return this;
    };
    elproto.blur = function (size) {
        var s = this.node.runtimeStyle,
            f = s.filter;
        f = f.replace(blurregexp, E);
        if (+size !== 0) {
            this.attrs.blur = size;
            s.filter = f + S + ms + ".Blur(pixelradius=" + (+size || 1.5) + ")";
            s.margin = R.format("-{0}px 0 0 -{0}px", round(+size || 1.5));
        } else {
            s.filter = f;
            s.margin = 0;
            delete this.attrs.blur;
        }
    };

    R._engine.path = function (pathString, vml) {
        var el = createNode("shape");
        el.style.cssText = cssDot;
        el.coordsize = zoom + S + zoom;
        el.coordorigin = vml.coordorigin;
        var p = new Element(el, vml),
            attr = {fill: "none", stroke: "#000"};
        pathString && (attr.path = pathString);
        p.type = "path";
        p.path = [];
        p.Path = E;
        setFillAndStroke(p, attr);
        vml.canvas.appendChild(el);
        var skew = createNode("skew");
        skew.on = true;
        el.appendChild(skew);
        p.skew = skew;
        p.transform(E);
        return p;
    };
    R._engine.rect = function (vml, x, y, w, h, r) {
        var path = R._rectPath(x, y, w, h, r),
            res = vml.path(path),
            a = res.attrs;
        res.X = a.x = x;
        res.Y = a.y = y;
        res.W = a.width = w;
        res.H = a.height = h;
        a.r = r;
        a.path = path;
        res.type = "rect";
        return res;
    };
    R._engine.ellipse = function (vml, x, y, rx, ry) {
        var res = vml.path(),
            a = res.attrs;
        res.X = x - rx;
        res.Y = y - ry;
        res.W = rx * 2;
        res.H = ry * 2;
        res.type = "ellipse";
        setFillAndStroke(res, {
            cx: x,
            cy: y,
            rx: rx,
            ry: ry
        });
        return res;
    };
    R._engine.circle = function (vml, x, y, r) {
        var res = vml.path(),
            a = res.attrs;
        res.X = x - r;
        res.Y = y - r;
        res.W = res.H = r * 2;
        res.type = "circle";
        setFillAndStroke(res, {
            cx: x,
            cy: y,
            r: r
        });
        return res;
    };
    R._engine.image = function (vml, src, x, y, w, h) {
        var path = R._rectPath(x, y, w, h),
            res = vml.path(path).attr({stroke: "none"}),
            a = res.attrs,
            node = res.node,
            fill = node.getElementsByTagName(fillString)[0];
        a.src = src;
        res.X = a.x = x;
        res.Y = a.y = y;
        res.W = a.width = w;
        res.H = a.height = h;
        a.path = path;
        res.type = "image";
        fill.parentNode == node && node.removeChild(fill);
        fill.rotate = true;
        fill.src = src;
        fill.type = "tile";
        res._.fillpos = [x, y];
        res._.fillsize = [w, h];
        node.appendChild(fill);
        setCoords(res, 1, 1, 0, 0, 0);
        return res;
    };
    R._engine.text = function (vml, x, y, text) {
        var el = createNode("shape"),
            path = createNode("path"),
            o = createNode("textpath");
        x = x || 0;
        y = y || 0;
        text = text || "";
        path.v = R.format("m{0},{1}l{2},{1}", round(x * zoom), round(y * zoom), round(x * zoom) + 1);
        path.textpathok = true;
        o.string = Str(text);
        o.on = true;
        el.style.cssText = cssDot;
        el.coordsize = zoom + S + zoom;
        el.coordorigin = "0 0";
        var p = new Element(el, vml),
            attr = {
                fill: "#000",
                stroke: "none",
                font: R._availableAttrs.font,
                text: text
            };
        p.shape = el;
        p.path = path;
        p.textpath = o;
        p.type = "text";
        p.attrs.text = Str(text);
        p.attrs.x = x;
        p.attrs.y = y;
        p.attrs.w = 1;
        p.attrs.h = 1;
        setFillAndStroke(p, attr);
        el.appendChild(o);
        el.appendChild(path);
        vml.canvas.appendChild(el);
        var skew = createNode("skew");
        skew.on = true;
        el.appendChild(skew);
        p.skew = skew;
        p.transform(E);
        return p;
    };
    R._engine.setSize = function (width, height) {
        var cs = this.canvas.style;
        this.width = width;
        this.height = height;
        width == +width && (width += "px");
        height == +height && (height += "px");
        cs.width = width;
        cs.height = height;
        cs.clip = "rect(0 " + width + " " + height + " 0)";
        if (this._viewBox) {
            R._engine.setViewBox.apply(this, this._viewBox);
        }
        return this;
    };
    R._engine.setViewBox = function (x, y, w, h, fit) {
        R.eve("raphael.setViewBox", this, this._viewBox, [x, y, w, h, fit]);
        var width = this.width,
            height = this.height,
            size = 1 / mmax(w / width, h / height),
            H, W;
        if (fit) {
            H = height / h;
            W = width / w;
            if (w * H < width) {
                x -= (width - w * H) / 2 / H;
            }
            if (h * W < height) {
                y -= (height - h * W) / 2 / W;
            }
        }
        this._viewBox = [x, y, w, h, !!fit];
        this._viewBoxShift = {
            dx: -x,
            dy: -y,
            scale: size
        };
        this.forEach(function (el) {
            el.transform("...");
        });
        return this;
    };
    var createNode;
    R._engine.initWin = function (win) {
            var doc = win.document;
            doc.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
            try {
                !doc.namespaces.rvml && doc.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
                createNode = function (tagName) {
                    return doc.createElement('<rvml:' + tagName + ' class="rvml">');
                };
            } catch (e) {
                createNode = function (tagName) {
                    return doc.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
                };
            }
        };
    R._engine.initWin(R._g.win);
    R._engine.create = function () {
        var con = R._getContainer.apply(0, arguments),
            container = con.container,
            height = con.height,
            s,
            width = con.width,
            x = con.x,
            y = con.y;
        if (!container) {
            throw new Error("VML container not found.");
        }
        var res = new R._Paper,
            c = res.canvas = R._g.doc.createElement("div"),
            cs = c.style;
        x = x || 0;
        y = y || 0;
        width = width || 512;
        height = height || 342;
        res.width = width;
        res.height = height;
        width == +width && (width += "px");
        height == +height && (height += "px");
        res.coordsize = zoom * 1e3 + S + zoom * 1e3;
        res.coordorigin = "0 0";
        res.span = R._g.doc.createElement("span");
        res.span.style.cssText = "position:absolute;left:-9999em;top:-9999em;padding:0;margin:0;line-height:1;";
        c.appendChild(res.span);
        cs.cssText = R.format("top:0;left:0;width:{0};height:{1};display:inline-block;position:relative;clip:rect(0 {0} {1} 0);overflow:hidden", width, height);
        if (container == 1) {
            R._g.doc.body.appendChild(c);
            cs.left = x + "px";
            cs.top = y + "px";
            cs.position = "absolute";
        } else {
            if (container.firstChild) {
                container.insertBefore(c, container.firstChild);
            } else {
                container.appendChild(c);
            }
        }
        res.renderfix = function () {};
        return res;
    };
    R.prototype.clear = function () {
        R.eve("raphael.clear", this);
        this.canvas.innerHTML = E;
        this.span = R._g.doc.createElement("span");
        this.span.style.cssText = "position:absolute;left:-9999em;top:-9999em;padding:0;margin:0;line-height:1;display:inline;";
        this.canvas.appendChild(this.span);
        this.bottom = this.top = null;
    };
    R.prototype.remove = function () {
        R.eve("raphael.remove", this);
        this.canvas.parentNode.removeChild(this.canvas);
        for (var i in this) {
            this[i] = typeof this[i] == "function" ? R._removedFactory(i) : null;
        }
        return true;
    };

    var setproto = R.st;
    for (var method in elproto) if (elproto[has](method) && !setproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname].apply(el, arg);
                });
            };
        })(method);
    }
}(window.Raphael);;/*
    json2.js
    2011-10-19

    Public Domain.

    NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.

    See http://www.JSON.org/js.html


    This code should be minified before deployment.
    See http://javascript.crockford.com/jsmin.html

    USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
    NOT CONTROL.


    This file creates a global JSON object containing two methods: stringify
    and parse.

        JSON.stringify(value, replacer, space)
            value       any JavaScript value, usually an object or array.

            replacer    an optional parameter that determines how object
                        values are stringified for objects. It can be a
                        function or an array of strings.

            space       an optional parameter that specifies the indentation
                        of nested structures. If it is omitted, the text will
                        be packed without extra whitespace. If it is a number,
                        it will specify the number of spaces to indent at each
                        level. If it is a string (such as '\t' or '&nbsp;'),
                        it contains the characters used to indent at each level.

            This method produces a JSON text from a JavaScript value.

            When an object value is found, if the object contains a toJSON
            method, its toJSON method will be called and the result will be
            stringified. A toJSON method does not serialize: it returns the
            value represented by the name/value pair that should be serialized,
            or undefined if nothing should be serialized. The toJSON method
            will be passed the key associated with the value, and this will be
            bound to the value

            For example, this would serialize Dates as ISO strings.

                Date.prototype.toJSON = function (key) {
                    function f(n) {
                        // Format integers to have at least two digits.
                        return n < 10 ? '0' + n : n;
                    }

                    return this.getUTCFullYear()   + '-' +
                         f(this.getUTCMonth() + 1) + '-' +
                         f(this.getUTCDate())      + 'T' +
                         f(this.getUTCHours())     + ':' +
                         f(this.getUTCMinutes())   + ':' +
                         f(this.getUTCSeconds())   + 'Z';
                };

            You can provide an optional replacer method. It will be passed the
            key and value of each member, with this bound to the containing
            object. The value that is returned from your method will be
            serialized. If your method returns undefined, then the member will
            be excluded from the serialization.

            If the replacer parameter is an array of strings, then it will be
            used to select the members to be serialized. It filters the results
            such that only members with keys listed in the replacer array are
            stringified.

            Values that do not have JSON representations, such as undefined or
            functions, will not be serialized. Such values in objects will be
            dropped; in arrays they will be replaced with null. You can use
            a replacer function to replace those with JSON values.
            JSON.stringify(undefined) returns undefined.

            The optional space parameter produces a stringification of the
            value that is filled with line breaks and indentation to make it
            easier to read.

            If the space parameter is a non-empty string, then that string will
            be used for indentation. If the space parameter is a number, then
            the indentation will be that many spaces.

            Example:

            text = JSON.stringify(['e', {pluribus: 'unum'}]);
            // text is '["e",{"pluribus":"unum"}]'


            text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
            // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'

            text = JSON.stringify([new Date()], function (key, value) {
                return this[key] instanceof Date ?
                    'Date(' + this[key] + ')' : value;
            });
            // text is '["Date(---current time---)"]'


        JSON.parse(text, reviver)
            This method parses a JSON text to produce an object or array.
            It can throw a SyntaxError exception.

            The optional reviver parameter is a function that can filter and
            transform the results. It receives each of the keys and values,
            and its return value is used instead of the original value.
            If it returns what it received, then the structure is not modified.
            If it returns undefined then the member is deleted.

            Example:

            // Parse the text. Values that look like ISO date strings will
            // be converted to Date objects.

            myData = JSON.parse(text, function (key, value) {
                var a;
                if (typeof value === 'string') {
                    a =
/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
                    if (a) {
                        return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
                            +a[5], +a[6]));
                    }
                }
                return value;
            });

            myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
                var d;
                if (typeof value === 'string' &&
                        value.slice(0, 5) === 'Date(' &&
                        value.slice(-1) === ')') {
                    d = new Date(value.slice(5, -1));
                    if (d) {
                        return d;
                    }
                }
                return value;
            });


    This is a reference implementation. You are free to copy, modify, or
    redistribute.
*/

/*jslint evil: true, regexp: true */

/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
    call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
    getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
    lastIndex, length, parse, prototype, push, replace, slice, stringify,
    test, toJSON, toString, valueOf
*/


// Create a JSON object only if one does not already exist. We create the
// methods in a closure to avoid creating global variables.

var JSON;
if (!JSON) {
    JSON = {};
}

(function () {
    'use strict';

    function f(n) {
        // Format integers to have at least two digits.
        return n < 10 ? '0' + n : n;
    }

    if (typeof Date.prototype.toJSON !== 'function') {

        Date.prototype.toJSON = function (key) {

            return isFinite(this.valueOf())
                ? this.getUTCFullYear()     + '-' +
                    f(this.getUTCMonth() + 1) + '-' +
                    f(this.getUTCDate())      + 'T' +
                    f(this.getUTCHours())     + ':' +
                    f(this.getUTCMinutes())   + ':' +
                    f(this.getUTCSeconds())   + 'Z'
                : null;
        };

        String.prototype.toJSON      =
            Number.prototype.toJSON  =
            Boolean.prototype.toJSON = function (key) {
                return this.valueOf();
            };
    }

    var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
        escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
        gap,
        indent,
        meta = {    // table of character substitutions
            '\b': '\\b',
            '\t': '\\t',
            '\n': '\\n',
            '\f': '\\f',
            '\r': '\\r',
            '"' : '\\"',
            '\\': '\\\\'
        },
        rep;


    function quote(string) {

// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.

        escapable.lastIndex = 0;
        return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
            var c = meta[a];
            return typeof c === 'string'
                ? c
                : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
        }) + '"' : '"' + string + '"';
    }


    function str(key, holder) {

// Produce a string from holder[key].

        var i,          // The loop counter.
            k,          // The member key.
            v,          // The member value.
            length,
            mind = gap,
            partial,
            value = holder[key];

// If the value has a toJSON method, call it to obtain a replacement value.

        if (value && typeof value === 'object' &&
                typeof value.toJSON === 'function') {
            value = value.toJSON(key);
        }

// If we were called with a replacer function, then call the replacer to
// obtain a replacement value.

        if (typeof rep === 'function') {
            value = rep.call(holder, key, value);
        }

// What happens next depends on the value's type.

        switch (typeof value) {
        case 'string':
            return quote(value);

        case 'number':

// JSON numbers must be finite. Encode non-finite numbers as null.

            return isFinite(value) ? String(value) : 'null';

        case 'boolean':
        case 'null':

// If the value is a boolean or null, convert it to a string. Note:
// typeof null does not produce 'null'. The case is included here in
// the remote chance that this gets fixed someday.

            return String(value);

// If the type is 'object', we might be dealing with an object or an array or
// null.

        case 'object':

// Due to a specification blunder in ECMAScript, typeof null is 'object',
// so watch out for that case.

            if (!value) {
                return 'null';
            }

// Make an array to hold the partial results of stringifying this object value.

            gap += indent;
            partial = [];

// Is the value an array?

            if (Object.prototype.toString.apply(value) === '[object Array]') {

// The value is an array. Stringify every element. Use null as a placeholder
// for non-JSON values.

                length = value.length;
                for (i = 0; i < length; i += 1) {
                    partial[i] = str(i, value) || 'null';
                }

// Join all of the elements together, separated with commas, and wrap them in
// brackets.

                v = partial.length === 0
                    ? '[]'
                    : gap
                    ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
                    : '[' + partial.join(',') + ']';
                gap = mind;
                return v;
            }

// If the replacer is an array, use it to select the members to be stringified.

            if (rep && typeof rep === 'object') {
                length = rep.length;
                for (i = 0; i < length; i += 1) {
                    if (typeof rep[i] === 'string') {
                        k = rep[i];
                        v = str(k, value);
                        if (v) {
                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
                        }
                    }
                }
            } else {

// Otherwise, iterate through all of the keys in the object.

                for (k in value) {
                    if (Object.prototype.hasOwnProperty.call(value, k)) {
                        v = str(k, value);
                        if (v) {
                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
                        }
                    }
                }
            }

// Join all of the member texts together, separated with commas,
// and wrap them in braces.

            v = partial.length === 0
                ? '{}'
                : gap
                ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
                : '{' + partial.join(',') + '}';
            gap = mind;
            return v;
        }
    }

// If the JSON object does not yet have a stringify method, give it one.

    if (typeof JSON.stringify !== 'function') {
        JSON.stringify = function (value, replacer, space) {

// The stringify method takes a value and an optional replacer, and an optional
// space parameter, and returns a JSON text. The replacer can be a function
// that can replace values, or an array of strings that will select the keys.
// A default replacer method can be provided. Use of the space parameter can
// produce text that is more easily readable.

            var i;
            gap = '';
            indent = '';

// If the space parameter is a number, make an indent string containing that
// many spaces.

            if (typeof space === 'number') {
                for (i = 0; i < space; i += 1) {
                    indent += ' ';
                }

// If the space parameter is a string, it will be used as the indent string.

            } else if (typeof space === 'string') {
                indent = space;
            }

// If there is a replacer, it must be a function or an array.
// Otherwise, throw an error.

            rep = replacer;
            if (replacer && typeof replacer !== 'function' &&
                    (typeof replacer !== 'object' ||
                    typeof replacer.length !== 'number')) {
                throw new Error('JSON.stringify');
            }

// Make a fake root object containing our value under the key of ''.
// Return the result of stringifying the value.

            return str('', {'': value});
        };
    }


// If the JSON object does not yet have a parse method, give it one.

    if (typeof JSON.parse !== 'function') {
        JSON.parse = function (text, reviver) {

// The parse method takes a text and an optional reviver function, and returns
// a JavaScript value if the text is a valid JSON text.

            var j;

            function walk(holder, key) {

// The walk method is used to recursively walk the resulting structure so
// that modifications can be made.

                var k, v, value = holder[key];
                if (value && typeof value === 'object') {
                    for (k in value) {
                        if (Object.prototype.hasOwnProperty.call(value, k)) {
                            v = walk(value, k);
                            if (v !== undefined) {
                                value[k] = v;
                            } else {
                                delete value[k];
                            }
                        }
                    }
                }
                return reviver.call(holder, key, value);
            }


// Parsing happens in four stages. In the first stage, we replace certain
// Unicode characters with escape sequences. JavaScript handles many characters
// incorrectly, either silently deleting them, or treating them as line endings.

            text = String(text);
            cx.lastIndex = 0;
            if (cx.test(text)) {
                text = text.replace(cx, function (a) {
                    return '\\u' +
                        ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                });
            }

// In the second stage, we run the text against regular expressions that look
// for non-JSON patterns. We are especially concerned with '()' and 'new'
// because they can cause invocation, and '=' because it can cause mutation.
// But just to be safe, we want to reject all unexpected forms.

// We split the second stage into 4 regexp operations in order to work around
// crippling inefficiencies in IE's and Safari's regexp engines. First we
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
// replace all simple value tokens with ']' characters. Third, we delete all
// open brackets that follow a colon or comma or that begin the text. Finally,
// we look to see that the remaining characters are only whitespace or ']' or
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.

            if (/^[\],:{}\s]*$/
                    .test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
                        .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
                        .replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {

// In the third stage we use the eval function to compile the text into a
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
// in JavaScript: it can begin a block or an object literal. We wrap the text
// in parens to eliminate the ambiguity.

                j = eval('(' + text + ')');

// In the optional fourth stage, we recursively walk the new structure, passing
// each name/value pair to a reviver function for possible transformation.

                return typeof reviver === 'function'
                    ? walk({'': j}, '')
                    : j;
            }

// If the text is not JSON parseable, then a SyntaxError is thrown.

            throw new SyntaxError('JSON.parse');
        };
    }
}());
;if (!Date.now) Date.now = function() {
  return +new Date;
};
var d3_array_map;
var d3_array_forEach;
;(function() {
"use strict";
// Implementation copied from underscore.js
var ArrayProto         = Array.prototype
var nativeForEach      = ArrayProto.forEach
var nativeMap          = ArrayProto.map
var breaker = {};

d3_array_map = function(obj, iterator, context) {
  var results = [];
  if (obj == null) return results;
  if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
  d3_array_forEach(obj, function(value, index, list) {
    results[results.length] = iterator.call(context, value, index, list);
  });
  if (obj.length === +obj.length) results.length = obj.length;
  return results;
};

d3_array_forEach = function(obj, iterator, context) {
  if (obj == null) return;
  if (nativeForEach && obj.forEach === nativeForEach) {
    obj.forEach(iterator, context);
  } else if (obj.length === +obj.length) {
    for (var i = 0, l = obj.length; i < l; i++) {
      if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
    }
  } else {
    for (var key in obj) {
      if (_.has(obj, key)) {
        if (iterator.call(context, obj[key], key, obj) === breaker) return;
      }
    }
  }
};

if (!nativeMap) {
  Array.prototype.map = function(iterator) {
    return d3_array_map(this, iterator)
  }

}
})();
var d3_selectionPrototype_text;
var hasTextContent;

hasTextContent = (document.createElement("div").textContent !== undefined)
if (hasTextContent) {
  d3_selectionPrototype_text = function(value) {
    return arguments.length < 1
        ? this.node().textContent : this.each(typeof value === "function"
        ? function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; } : value == null
        ? function() { this.textContent = ""; }
        : function() { this.textContent = value; });
  }
} else {
  d3_selectionPrototype_text = function(value) {
    return arguments.length < 1
        ? this.node().innerText : this.each(typeof value === "function"
        ? function() { var v = value.apply(this, arguments); this.innerText = v == null ? "" : v; } : value == null
        ? function() { this.innerText = ""; }
        : function() { this.innerText = value; });
  }
}
var d3;
d3 = {version: "2.8.1"}; // semver
if (window) {
  window.d3 = d3;
} else {
  this.d3 = d3;
}
function d3_class(ctor, properties) {
  try {
    for (var key in properties) {
      Object.defineProperty(ctor.prototype, key, {
        value: properties[key],
        enumerable: false
      });
    }
  } catch (e) {
    ctor.prototype = properties;
  }
}
var d3_array = d3_arraySlice; // conversion for NodeLists

function d3_arrayCopy(pseudoarray) {
  var i = -1, n = pseudoarray.length, array = [];
  while (++i < n) array.push(pseudoarray[i]);
  return array;
}

function d3_arraySlice(pseudoarray) {
  return Array.prototype.slice.call(pseudoarray);
}

try {
  d3_array(document.documentElement.childNodes)[0].nodeType;
} catch(e) {
  d3_array = d3_arrayCopy;
}

var d3_arraySubclass = [].__proto__?

// Until ECMAScript supports array subclassing, prototype injection works well.
function(array, prototype) {
  array.__proto__ = prototype;
}:

// And if your browser doesn't support __proto__, we'll use direct extension.
function(array, prototype) {
  for (var property in prototype) array[property] = prototype[property];
};
d3.map = function(object) {
  var map = new d3_Map;
  for (var key in object) map.set(key, object[key]);
  return map;
};

function d3_Map() {}

d3_class(d3_Map, {
  has: function(key) {
    return d3_map_prefix + key in this;
  },
  get: function(key) {
    return this[d3_map_prefix + key];
  },
  set: function(key, value) {
    return this[d3_map_prefix + key] = value;
  },
  remove: function(key) {
    key = d3_map_prefix + key;
    return key in this && delete this[key];
  },
  keys: function() {
    var keys = [];
    this.forEach(function(key) { keys.push(key); });
    return keys;
  },
  values: function() {
    var values = [];
    this.forEach(function(key, value) { values.push(value); });
    return values;
  },
  entries: function() {
    var entries = [];
    this.forEach(function(key, value) { entries.push({key: key, value: value}); });
    return entries;
  },
  forEach: function(f) {
    for (var key in this) {
      if (key.charCodeAt(0) === d3_map_prefixCode) {
        f.call(this, key.substring(1), this[key]);
      }
    }
  }
});

var d3_map_prefix = "\0", // prevent collision with built-ins
    d3_map_prefixCode = d3_map_prefix.charCodeAt(0);
function d3_this() {
  return this;
}
d3.functor = function(v) {
  return typeof v === "function" ? v : function() { return v; };
};
// Copies a variable number of methods from source to target.
d3.rebind = function(target, source) {
  var i = 1, n = arguments.length, method;
  while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
  return target;
};

// Method is assumed to be a standard D3 getter-setter:
// If passed with no arguments, gets the value.
// If passed with arguments, sets the value and returns the target.
function d3_rebind(target, source, method) {
  return function() {
    var value = method.apply(source, arguments);
    return arguments.length ? target : value;
  };
}
d3.ascending = function(a, b) {
  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
};
d3.descending = function(a, b) {
  return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
};
d3.mean = function(array, f) {
  var n = array.length,
      a,
      m = 0,
      i = -1,
      j = 0;
  if (arguments.length === 1) {
    while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
  } else {
    while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
  }
  return j ? m : undefined;
};
d3.median = function(array, f) {
  if (arguments.length > 1) array = array.map(f);
  array = array.filter(d3_number);
  return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
};
d3.min = function(array, f) {
  var i = -1,
      n = array.length,
      a,
      b;
  if (arguments.length === 1) {
    while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
    while (++i < n) if ((b = array[i]) != null && a > b) a = b;
  } else {
    while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
    while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
  }
  return a;
};
d3.max = function(array, f) {
  var i = -1,
      n = array.length,
      a,
      b;
  if (arguments.length === 1) {
    while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
    while (++i < n) if ((b = array[i]) != null && b > a) a = b;
  } else {
    while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
    while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
  }
  return a;
};
d3.extent = function(array, f) {
  var i = -1,
      n = array.length,
      a,
      b,
      c;
  if (arguments.length === 1) {
    while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
    while (++i < n) if ((b = array[i]) != null) {
      if (a > b) a = b;
      if (c < b) c = b;
    }
  } else {
    while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
    while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
      if (a > b) a = b;
      if (c < b) c = b;
    }
  }
  return [a, c];
};
d3.random = {
  normal: function(mean, deviation) {
    if (arguments.length < 2) deviation = 1;
    if (arguments.length < 1) mean = 0;
    return function() {
      var x, y, r;
      do {
        x = Math.random() * 2 - 1;
        y = Math.random() * 2 - 1;
        r = x * x + y * y;
      } while (!r || r > 1);
      return mean + deviation * x * Math.sqrt(-2 * Math.log(r) / r);
    };
  }
};
function d3_number(x) {
  return x != null && !isNaN(x);
}
d3.sum = function(array, f) {
  var s = 0,
      n = array.length,
      a,
      i = -1;

  if (arguments.length === 1) {
    while (++i < n) if (!isNaN(a = +array[i])) s += a;
  } else {
    while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
  }

  return s;
};
// R-7 per <http://en.wikipedia.org/wiki/Quantile>
d3.quantile = function(values, p) {
  var H = (values.length - 1) * p + 1,
      h = Math.floor(H),
      v = values[h - 1],
      e = H - h;
  return e ? v + e * (values[h] - v) : v;
};
d3.transpose = function(matrix) {
  return d3.zip.apply(d3, matrix);
};
d3.zip = function() {
  if (!(n = arguments.length)) return [];
  for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) {
    for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) {
      zip[j] = arguments[j][i];
    }
  }
  return zips;
};

function d3_zipLength(d) {
  return d.length;
}
d3.bisector = function(f) {
  return {
    left: function(a, x, lo, hi) {
      if (arguments.length < 3) lo = 0;
      if (arguments.length < 4) hi = a.length;
      while (lo < hi) {
        var mid = lo + hi >> 1;
        if (f.call(a, a[mid], mid) < x) lo = mid + 1;
        else hi = mid;
      }
      return lo;
    },
    right: function(a, x, lo, hi) {
      if (arguments.length < 3) lo = 0;
      if (arguments.length < 4) hi = a.length;
      while (lo < hi) {
        var mid = lo + hi >> 1;
        if (x < f.call(a, a[mid], mid)) hi = mid;
        else lo = mid + 1;
      }
      return lo;
    }
  };
};

var d3_bisector = d3.bisector(function(d) { return d; });
d3.bisectLeft = d3_bisector.left;
d3.bisect = d3.bisectRight = d3_bisector.right;
d3.first = function(array, f) {
  var i = 0,
      n = array.length,
      a = array[0],
      b;
  if (arguments.length === 1) f = d3.ascending;
  while (++i < n) {
    if (f.call(array, a, b = array[i]) > 0) {
      a = b;
    }
  }
  return a;
};
d3.last = function(array, f) {
  var i = 0,
      n = array.length,
      a = array[0],
      b;
  if (arguments.length === 1) f = d3.ascending;
  while (++i < n) {
    if (f.call(array, a, b = array[i]) <= 0) {
      a = b;
    }
  }
  return a;
};
d3.nest = function() {
  var nest = {},
      keys = [],
      sortKeys = [],
      sortValues,
      rollup;

  function map(array, depth) {
    if (depth >= keys.length) return rollup
        ? rollup.call(nest, array) : (sortValues
        ? array.sort(sortValues)
        : array);

    var i = -1,
        n = array.length,
        key = keys[depth++],
        keyValue,
        object,
        valuesByKey = new d3_Map,
        values,
        o = {};

    while (++i < n) {
      if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
        values.push(object);
      } else {
        valuesByKey.set(keyValue, [object]);
      }
    }

    valuesByKey.forEach(function(keyValue) {
      o[keyValue] = map(valuesByKey.get(keyValue), depth);
    });

    return o;
  }

  function entries(map, depth) {
    if (depth >= keys.length) return map;

    var a = [],
        sortKey = sortKeys[depth++],
        key;

    for (key in map) {
      a.push({key: key, values: entries(map[key], depth)});
    }

    if (sortKey) a.sort(function(a, b) {
      return sortKey(a.key, b.key);
    });

    return a;
  }

  nest.map = function(array) {
    return map(array, 0);
  };

  nest.entries = function(array) {
    return entries(map(array, 0), 0);
  };

  nest.key = function(d) {
    keys.push(d);
    return nest;
  };

  // Specifies the order for the most-recently specified key.
  // Note: only applies to entries. Map keys are unordered!
  nest.sortKeys = function(order) {
    sortKeys[keys.length - 1] = order;
    return nest;
  };

  // Specifies the order for leaf values.
  // Applies to both maps and entries array.
  nest.sortValues = function(order) {
    sortValues = order;
    return nest;
  };

  nest.rollup = function(f) {
    rollup = f;
    return nest;
  };

  return nest;
};
d3.keys = function(map) {
  var keys = [];
  for (var key in map) keys.push(key);
  return keys;
};
d3.values = function(map) {
  var values = [];
  for (var key in map) values.push(map[key]);
  return values;
};
d3.entries = function(map) {
  var entries = [];
  for (var key in map) entries.push({key: key, value: map[key]});
  return entries;
};
d3.permute = function(array, indexes) {
  var permutes = [],
      i = -1,
      n = indexes.length;
  while (++i < n) permutes[i] = array[indexes[i]];
  return permutes;
};
d3.merge = function(arrays) {
  return Array.prototype.concat.apply([], arrays);
};
d3.split = function(array, f) {
  var arrays = [],
      values = [],
      value,
      i = -1,
      n = array.length;
  if (arguments.length < 2) f = d3_splitter;
  while (++i < n) {
    if (f.call(values, value = array[i], i)) {
      values = [];
    } else {
      if (!values.length) arrays.push(values);
      values.push(value);
    }
  }
  return arrays;
};

function d3_splitter(d) {
  return d == null;
}
function d3_collapse(s) {
  return s.replace(/(^\s+)|(\s+$)/g, "").replace(/\s+/g, " ");
}
d3.range = function(start, stop, step) {
  if (arguments.length < 3) {
    step = 1;
    if (arguments.length < 2) {
      stop = start;
      start = 0;
    }
  }
  if ((stop - start) / step === Infinity) throw new Error("infinite range");
  var range = [],
       k = d3_range_integerScale(Math.abs(step)),
       i = -1,
       j;
  start *= k, stop *= k, step *= k;
  if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k);
  else while ((j = start + step * ++i) < stop) range.push(j / k);
  return range;
};

function d3_range_integerScale(x) {
  var k = 1;
  while (x * k % 1) k *= 10;
  return k;
}
d3.requote = function(s) {
  return s.replace(d3_requote_re, "\\$&");
};

var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
d3.round = function(x, n) {
  return n
      ? Math.round(x * (n = Math.pow(10, n))) / n
      : Math.round(x);
};
d3.xhr = function(url, mime, callback) {
  var req = new XMLHttpRequest;
  if (arguments.length < 3) callback = mime, mime = null;
  else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
  req.open("GET", url, true);
  if (mime) req.setRequestHeader("Accept", mime);
  req.onreadystatechange = function() {
    if (req.readyState === 4) callback(req.status < 300 ? req : null);
  };
  req.send(null);
};
d3.text = function(url, mime, callback) {
  function ready(req) {
    callback(req && req.responseText);
  }
  if (arguments.length < 3) {
    callback = mime;
    mime = null;
  }
  d3.xhr(url, mime, ready);
};
d3.json = function(url, callback) {
  d3.text(url, "application/json", function(text) {
    callback(text ? JSON.parse(text) : null);
  });
};
d3.html = function(url, callback) {
  d3.text(url, "text/html", function(text) {
    if (text != null) { // Treat empty string as valid HTML.
      var range = document.createRange();
      range.selectNode(document.body);
      text = range.createContextualFragment(text);
    }
    callback(text);
  });
};
d3.xml = function(url, mime, callback) {
  function ready(req) {
    callback(req && req.responseXML);
  }
  if (arguments.length < 3) {
    callback = mime;
    mime = null;
  }
  d3.xhr(url, mime, ready);
};
var d3_nsPrefix = {
  svg: "http://www.w3.org/2000/svg",
  xhtml: "http://www.w3.org/1999/xhtml",
  xlink: "http://www.w3.org/1999/xlink",
  xml: "http://www.w3.org/XML/1998/namespace",
  xmlns: "http://www.w3.org/2000/xmlns/",
  vml: "urn:schemas-microsoft-com:vml"
};

d3.ns = {
  prefix: d3_nsPrefix,
  qualify: function(name) {
    var i = name.indexOf(":"),
        prefix = name;
    if (i >= 0) {
      prefix = name.substring(0, i);
      name = name.substring(i + 1);
    }
    return d3_nsPrefix.hasOwnProperty(prefix)
        ? {space: d3_nsPrefix[prefix], local: name}
        : name;
  }
};
d3.dispatch = function() {
  var dispatch = new d3_dispatch,
      i = -1,
      n = arguments.length;
  while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
  return dispatch;
};

function d3_dispatch() {}

d3_dispatch.prototype.on = function(type, listener) {
  var i = type.indexOf("."),
      name = "";

  // Extract optional namespace, e.g., "click.foo"
  if (i > 0) {
    name = type.substring(i + 1);
    type = type.substring(0, i);
  }

  return arguments.length < 2
      ? this[type].on(name)
      : this[type].on(name, listener);
};

function d3_dispatch_event(dispatch) {
  var listeners = [],
      listenerByName = new d3_Map;

  function event() {
    var z = listeners, // defensive reference
        i = -1,
        n = z.length,
        l;
    while (++i < n) if (l = z[i].on) l.apply(this, arguments);
    return dispatch;
  }

  event.on = function(name, listener) {
    var l = listenerByName.get(name),
        i;

    // return the current listener, if any
    if (arguments.length < 2) return l && l.on;

    // remove the old listener, if any (with copy-on-write)
    if (l) {
      l.on = null;
      listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
      listenerByName.remove(name);
    }

    // add the new listener, if any
    if (listener) listeners.push(listenerByName.set(name, {on: listener}));

    return dispatch;
  };

  return event;
}
// TODO align
d3.format = function(specifier) {
  var match = d3_format_re.exec(specifier),
      fill = match[1] || " ",
      sign = match[3] || "",
      zfill = match[5],
      width = +match[6],
      comma = match[7],
      precision = match[8],
      type = match[9],
      scale = 1,
      suffix = "",
      integer = false;

  if (precision) precision = +precision.substring(1);

  if (zfill) {
    fill = "0"; // TODO align = "=";
    if (comma) width -= Math.floor((width - 1) / 4);
  }

  switch (type) {
    case "n": comma = true; type = "g"; break;
    case "%": scale = 100; suffix = "%"; type = "f"; break;
    case "p": scale = 100; suffix = "%"; type = "r"; break;
    case "d": integer = true; precision = 0; break;
    case "s": scale = -1; type = "r"; break;
  }

  // If no precision is specified for r, fallback to general notation.
  if (type == "r" && !precision) type = "g";

  type = d3_format_types.get(type) || d3_format_typeDefault;

  return function(value) {

    // Return the empty string for floats formatted as ints.
    if (integer && (value % 1)) return "";

    // Convert negative to positive, and record the sign prefix.
    var negative = (value < 0) && (value = -value) ? "\u2212" : sign;

    // Apply the scale, computing it from the value's exponent for si format.
    if (scale < 0) {
      var prefix = d3.formatPrefix(value, precision);
      value *= prefix.scale;
      suffix = prefix.symbol;
    } else {
      value *= scale;
    }

    // Convert to the desired precision.
    value = type(value, precision);

    // If the fill character is 0, the sign and group is applied after the fill.
    if (zfill) {
      var length = value.length + negative.length;
      if (length < width) value = new Array(width - length + 1).join(fill) + value;
      if (comma) value = d3_format_group(value);
      value = negative + value;
    }

    // Otherwise (e.g., space-filling), the sign and group is applied before.
    else {
      if (comma) value = d3_format_group(value);
      value = negative + value;
      var length = value.length;
      if (length < width) value = new Array(width - length + 1).join(fill) + value;
    }

    return value + suffix;
  };
};

// [[fill]align][sign][#][0][width][,][.precision][type]
var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;

var d3_format_types = d3.map({
  g: function(x, p) { return x.toPrecision(p); },
  e: function(x, p) { return x.toExponential(p); },
  f: function(x, p) { return x.toFixed(p); },
  r: function(x, p) { return d3.round(x, p = d3_format_precision(x, p)).toFixed(Math.max(0, Math.min(20, p))); }
});

function d3_format_precision(x, p) {
  return p - (x ? 1 + Math.floor(Math.log(x + Math.pow(10, 1 + Math.floor(Math.log(x) / Math.LN10) - p)) / Math.LN10) : 1);
}

function d3_format_typeDefault(x) {
  return x + "";
}

// Apply comma grouping for thousands.
function d3_format_group(value) {
  var i = value.lastIndexOf("."),
      f = i >= 0 ? value.substring(i) : (i = value.length, ""),
      t = [];
  while (i > 0) t.push(value.substring(i -= 3, i + 3));
  return t.reverse().join(",") + f;
}
var d3_formatPrefixes = d3_array_map(["y","z","a","f","p","n","μ","m","","k","M","G","T","P","E","Z","Y"], d3_formatPrefix);
d3.formatPrefix = function(value, precision) {
  var i = 0;
  if (value) {
    if (value < 0) value *= -1;
    if (precision) value = d3.round(value, d3_format_precision(value, precision));
    i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
    i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
  }
  return d3_formatPrefixes[8 + i / 3];
};

function d3_formatPrefix(d, i) {
  return {
    scale: Math.pow(10, (8 - i) * 3),
    symbol: d
  };
}

/*
 * TERMS OF USE - EASING EQUATIONS
 *
 * Open source under the BSD License.
 *
 * Copyright 2001 Robert Penner
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of the author nor the names of contributors may be used to
 *   endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

var d3_ease_quad = d3_ease_poly(2),
    d3_ease_cubic = d3_ease_poly(3),
    d3_ease_default = function() { return d3_ease_identity; };

var d3_ease = d3.map({
  linear: d3_ease_default,
  poly: d3_ease_poly,
  quad: function() { return d3_ease_quad; },
  cubic: function() { return d3_ease_cubic; },
  sin: function() { return d3_ease_sin; },
  exp: function() { return d3_ease_exp; },
  circle: function() { return d3_ease_circle; },
  elastic: d3_ease_elastic,
  back: d3_ease_back,
  bounce: function() { return d3_ease_bounce; }
});

var d3_ease_mode = d3.map({
  "in": d3_ease_identity,
  "out": d3_ease_reverse,
  "in-out": d3_ease_reflect,
  "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); }
});

d3.ease = function(name) {
  var i = name.indexOf("-"),
      t = i >= 0 ? name.substring(0, i) : name,
      m = i >= 0 ? name.substring(i + 1) : "in";
  t = d3_ease.get(t) || d3_ease_default;
  m = d3_ease_mode.get(m) || d3_ease_identity;
  return d3_ease_clamp(m(t.apply(null, Array.prototype.slice.call(arguments, 1))));
};

function d3_ease_clamp(f) {
  return function(t) {
    return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
  };
}

function d3_ease_reverse(f) {
  return function(t) {
    return 1 - f(1 - t);
  };
}

function d3_ease_reflect(f) {
  return function(t) {
    return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
  };
}

function d3_ease_identity(t) {
  return t;
}

function d3_ease_poly(e) {
  return function(t) {
    return Math.pow(t, e);
  };
}

function d3_ease_sin(t) {
  return 1 - Math.cos(t * Math.PI / 2);
}

function d3_ease_exp(t) {
  return Math.pow(2, 10 * (t - 1));
}

function d3_ease_circle(t) {
  return 1 - Math.sqrt(1 - t * t);
}

function d3_ease_elastic(a, p) {
  var s;
  if (arguments.length < 2) p = 0.45;
  if (arguments.length < 1) { a = 1; s = p / 4; }
  else s = p / (2 * Math.PI) * Math.asin(1 / a);
  return function(t) {
    return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
  };
}

function d3_ease_back(s) {
  if (!s) s = 1.70158;
  return function(t) {
    return t * t * ((s + 1) * t - s);
  };
}

function d3_ease_bounce(t) {
  return t < 1 / 2.75 ? 7.5625 * t * t
      : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75
      : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375
      : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
}
d3.event = null;

function d3_eventCancel() {
  d3.event.stopPropagation();
  d3.event.preventDefault();
}

function d3_eventSource() {
  var e = d3.event, s;
  while (s = e.sourceEvent) e = s;
  return e;
}

// Like d3.dispatch, but for custom events abstracting native UI events. These
// events have a target component (such as a brush), a target element (such as
// the svg:g element containing the brush) and the standard arguments `d` (the
// target element's data) and `i` (the selection index of the target element).
function d3_eventDispatch(target) {
  var dispatch = new d3_dispatch,
      i = 0,
      n = arguments.length;

  while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);

  // Creates a dispatch context for the specified `thiz` (typically, the target
  // DOM element that received the source event) and `argumentz` (typically, the
  // data `d` and index `i` of the target element). The returned function can be
  // used to dispatch an event to any registered listeners; the function takes a
  // single argument as input, being the event to dispatch. The event must have
  // a "type" attribute which corresponds to a type registered in the
  // constructor. This context will automatically populate the "sourceEvent" and
  // "target" attributes of the event, as well as setting the `d3.event` global
  // for the duration of the notification.
  dispatch.of = function(thiz, argumentz) {
    return function(e1) {
      try {
        var e0 =
        e1.sourceEvent = d3.event;
        e1.target = target;
        d3.event = e1;
        dispatch[e1.type].apply(thiz, argumentz);
      } finally {
        d3.event = e0;
      }
    };
  };

  return dispatch;
}
d3.interpolate = function(a, b) {
  var i = d3.interpolators.length, f;
  while (--i >= 0 && !(f = d3.interpolators[i](a, b)));
  return f;
};

d3.interpolateNumber = function(a, b) {
  b -= a;
  return function(t) { return a + b * t; };
};

d3.interpolateRound = function(a, b) {
  b -= a;
  return function(t) { return Math.round(a + b * t); };
};

d3.interpolateString = function(a, b) {
  var m, // current match
      i, // current index
      j, // current index (for coallescing)
      s0 = 0, // start index of current string prefix
      s1 = 0, // end index of current string prefix
      s = [], // string constants and placeholders
      q = [], // number interpolators
      n, // q.length
      o;

  // Reset our regular expression!
  d3_interpolate_number.lastIndex = 0;

  // Find all numbers in b.
  for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
    if (m.index) s.push(b.substring(s0, s1 = m.index));
    q.push({i: s.length, x: m[0]});
    s.push(null);
    s0 = d3_interpolate_number.lastIndex;
  }
  if (s0 < b.length) s.push(b.substring(s0));

  // Find all numbers in a.
  for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
    o = q[i];
    if (o.x == m[0]) { // The numbers match, so coallesce.
      if (o.i) {
        if (s[o.i + 1] == null) { // This match is followed by another number.
          s[o.i - 1] += o.x;
          s.splice(o.i, 1);
          for (j = i + 1; j < n; ++j) q[j].i--;
        } else { // This match is followed by a string, so coallesce twice.
          s[o.i - 1] += o.x + s[o.i + 1];
          s.splice(o.i, 2);
          for (j = i + 1; j < n; ++j) q[j].i -= 2;
        }
      } else {
          if (s[o.i + 1] == null) { // This match is followed by another number.
          s[o.i] = o.x;
        } else { // This match is followed by a string, so coallesce twice.
          s[o.i] = o.x + s[o.i + 1];
          s.splice(o.i + 1, 1);
          for (j = i + 1; j < n; ++j) q[j].i--;
        }
      }
      q.splice(i, 1);
      n--;
      i--;
    } else {
      o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
    }
  }

  // Remove any numbers in b not found in a.
  while (i < n) {
    o = q.pop();
    if (s[o.i + 1] == null) { // This match is followed by another number.
      s[o.i] = o.x;
    } else { // This match is followed by a string, so coallesce twice.
      s[o.i] = o.x + s[o.i + 1];
      s.splice(o.i + 1, 1);
    }
    n--;
  }

  // Special optimization for only a single match.
  if (s.length === 1) {
    return s[0] == null ? q[0].x : function() { return b; };
  }

  // Otherwise, interpolate each of the numbers and rejoin the string.
  return function(t) {
    for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
    return s.join("");
  };
};

d3.interpolateTransform = function(a, b) {
  var s = [], // string constants and placeholders
      q = [], // number interpolators
      n,
      A = d3.transform(a),
      B = d3.transform(b),
      ta = A.translate,
      tb = B.translate,
      ra = A.rotate,
      rb = B.rotate,
      wa = A.skew,
      wb = B.skew,
      ka = A.scale,
      kb = B.scale;

  if (ta[0] != tb[0] || ta[1] != tb[1]) {
    s.push("translate(", null, ",", null, ")");
    q.push({i: 1, x: d3.interpolateNumber(ta[0], tb[0])}, {i: 3, x: d3.interpolateNumber(ta[1], tb[1])});
  } else if (tb[0] || tb[1]) {
    s.push("translate(" + tb + ")");
  } else {
    s.push("");
  }

  if (ra != rb) {
    q.push({i: s.push(s.pop() + "rotate(", null, ")") - 2, x: d3.interpolateNumber(ra, rb)});
  } else if (rb) {
    s.push(s.pop() + "rotate(" + rb + ")");
  }

  if (wa != wb) {
    q.push({i: s.push(s.pop() + "skewX(", null, ")") - 2, x: d3.interpolateNumber(wa, wb)});
  } else if (wb) {
    s.push(s.pop() + "skewX(" + wb + ")");
  }

  if (ka[0] != kb[0] || ka[1] != kb[1]) {
    n = s.push(s.pop() + "scale(", null, ",", null, ")");
    q.push({i: n - 4, x: d3.interpolateNumber(ka[0], kb[0])}, {i: n - 2, x: d3.interpolateNumber(ka[1], kb[1])});
  } else if (kb[0] != 1 || kb[1] != 1) {
    s.push(s.pop() + "scale(" + kb + ")");
  }

  n = q.length;
  return function(t) {
    var i = -1, o;
    while (++i < n) s[(o = q[i]).i] = o.x(t);
    return s.join("");
  };
};

d3.interpolateRgb = function(a, b) {
  a = d3.rgb(a);
  b = d3.rgb(b);
  var ar = a.r,
      ag = a.g,
      ab = a.b,
      br = b.r - ar,
      bg = b.g - ag,
      bb = b.b - ab;
  return function(t) {
    return "#"
        + d3_rgb_hex(Math.round(ar + br * t))
        + d3_rgb_hex(Math.round(ag + bg * t))
        + d3_rgb_hex(Math.round(ab + bb * t));
  };
};

// interpolates HSL space, but outputs RGB string (for compatibility)
d3.interpolateHsl = function(a, b) {
  a = d3.hsl(a);
  b = d3.hsl(b);
  var h0 = a.h,
      s0 = a.s,
      l0 = a.l,
      h1 = b.h - h0,
      s1 = b.s - s0,
      l1 = b.l - l0;
  return function(t) {
    return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
  };
};

d3.interpolateArray = function(a, b) {
  var x = [],
      c = [],
      na = a.length,
      nb = b.length,
      n0 = Math.min(a.length, b.length),
      i;
  for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
  for (; i < na; ++i) c[i] = a[i];
  for (; i < nb; ++i) c[i] = b[i];
  return function(t) {
    for (i = 0; i < n0; ++i) c[i] = x[i](t);
    return c;
  };
};

d3.interpolateObject = function(a, b) {
  var i = {},
      c = {},
      k;
  for (k in a) {
    if (k in b) {
      i[k] = d3_interpolateByName(k)(a[k], b[k]);
    } else {
      c[k] = a[k];
    }
  }
  for (k in b) {
    if (!(k in a)) {
      c[k] = b[k];
    }
  }
  return function(t) {
    for (k in i) c[k] = i[k](t);
    return c;
  };
}

var d3_interpolate_number = /[-+]?(?:\d*\.?\d+)(?:[eE][-+]?\d+)?/g;

function d3_interpolateByName(n) {
  return n == "transform"
      ? d3.interpolateTransform
      : d3.interpolate;
}

d3.interpolators = [
  d3.interpolateObject,
  function(a, b) { return (b instanceof Array) && d3.interpolateArray(a, b); },
  function(a, b) { return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + ""); },
  function(a, b) { return (typeof b === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Rgb || b instanceof d3_Hsl) && d3.interpolateRgb(a, b); },
  function(a, b) { return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b); }
];
function d3_uninterpolateNumber(a, b) {
  b = b - (a = +a) ? 1 / (b - a) : 0;
  return function(x) { return (x - a) * b; };
}

function d3_uninterpolateClamp(a, b) {
  b = b - (a = +a) ? 1 / (b - a) : 0;
  return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
}
d3.rgb = function(r, g, b) {
  return arguments.length === 1
      ? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b)
      : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb))
      : d3_rgb(~~r, ~~g, ~~b);
};

function d3_rgb(r, g, b) {
  return new d3_Rgb(r, g, b);
}

function d3_Rgb(r, g, b) {
  this.r = r;
  this.g = g;
  this.b = b;
}

d3_Rgb.prototype.brighter = function(k) {
  k = Math.pow(0.7, arguments.length ? k : 1);
  var r = this.r,
      g = this.g,
      b = this.b,
      i = 30;
  if (!r && !g && !b) return d3_rgb(i, i, i);
  if (r && r < i) r = i;
  if (g && g < i) g = i;
  if (b && b < i) b = i;
  return d3_rgb(
      Math.min(255, Math.floor(r / k)),
      Math.min(255, Math.floor(g / k)),
      Math.min(255, Math.floor(b / k)));
};

d3_Rgb.prototype.darker = function(k) {
  k = Math.pow(0.7, arguments.length ? k : 1);
  return d3_rgb(
      Math.floor(k * this.r),
      Math.floor(k * this.g),
      Math.floor(k * this.b));
};

d3_Rgb.prototype.hsl = function() {
  return d3_rgb_hsl(this.r, this.g, this.b);
};

d3_Rgb.prototype.toString = function() {
  return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
};

function d3_rgb_hex(v) {
  return v < 0x10
      ? "0" + Math.max(0, v).toString(16)
      : Math.min(255, v).toString(16);
}

function d3_rgb_parse(format, rgb, hsl) {
  var r = 0, // red channel; int in [0, 255]
      g = 0, // green channel; int in [0, 255]
      b = 0, // blue channel; int in [0, 255]
      m1, // CSS color specification match
      m2, // CSS color specification type (e.g., rgb)
      name;

  /* Handle hsl, rgb. */
  m1 = /([a-z]+)\((.*)\)/i.exec(format);
  if (m1) {
    m2 = m1[2].split(",");
    switch (m1[1]) {
      case "hsl": {
        return hsl(
          parseFloat(m2[0]), // degrees
          parseFloat(m2[1]) / 100, // percentage
          parseFloat(m2[2]) / 100 // percentage
        );
      }
      case "rgb": {
        return rgb(
          d3_rgb_parseNumber(m2[0]),
          d3_rgb_parseNumber(m2[1]),
          d3_rgb_parseNumber(m2[2])
        );
      }
    }
  }

  /* Named colors. */
  if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b);

  /* Hexadecimal colors: #rgb and #rrggbb. */
  if (format != null && format.charAt(0) === "#") {
    if (format.length === 4) {
      r = format.charAt(1); r += r;
      g = format.charAt(2); g += g;
      b = format.charAt(3); b += b;
    } else if (format.length === 7) {
      r = format.substring(1, 3);
      g = format.substring(3, 5);
      b = format.substring(5, 7);
    }
    r = parseInt(r, 16);
    g = parseInt(g, 16);
    b = parseInt(b, 16);
  }

  return rgb(r, g, b);
}

function d3_rgb_hsl(r, g, b) {
  var min = Math.min(r /= 255, g /= 255, b /= 255),
      max = Math.max(r, g, b),
      d = max - min,
      h,
      s,
      l = (max + min) / 2;
  if (d) {
    s = l < .5 ? d / (max + min) : d / (2 - max - min);
    if (r == max) h = (g - b) / d + (g < b ? 6 : 0);
    else if (g == max) h = (b - r) / d + 2;
    else h = (r - g) / d + 4;
    h *= 60;
  } else {
    s = h = 0;
  }
  return d3_hsl(h, s, l);
}

function d3_rgb_parseNumber(c) { // either integer or percentage
  var f = parseFloat(c);
  return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
}

var d3_rgb_names = d3.map({
  aliceblue: "#f0f8ff",
  antiquewhite: "#faebd7",
  aqua: "#00ffff",
  aquamarine: "#7fffd4",
  azure: "#f0ffff",
  beige: "#f5f5dc",
  bisque: "#ffe4c4",
  black: "#000000",
  blanchedalmond: "#ffebcd",
  blue: "#0000ff",
  blueviolet: "#8a2be2",
  brown: "#a52a2a",
  burlywood: "#deb887",
  cadetblue: "#5f9ea0",
  chartreuse: "#7fff00",
  chocolate: "#d2691e",
  coral: "#ff7f50",
  cornflowerblue: "#6495ed",
  cornsilk: "#fff8dc",
  crimson: "#dc143c",
  cyan: "#00ffff",
  darkblue: "#00008b",
  darkcyan: "#008b8b",
  darkgoldenrod: "#b8860b",
  darkgray: "#a9a9a9",
  darkgreen: "#006400",
  darkgrey: "#a9a9a9",
  darkkhaki: "#bdb76b",
  darkmagenta: "#8b008b",
  darkolivegreen: "#556b2f",
  darkorange: "#ff8c00",
  darkorchid: "#9932cc",
  darkred: "#8b0000",
  darksalmon: "#e9967a",
  darkseagreen: "#8fbc8f",
  darkslateblue: "#483d8b",
  darkslategray: "#2f4f4f",
  darkslategrey: "#2f4f4f",
  darkturquoise: "#00ced1",
  darkviolet: "#9400d3",
  deeppink: "#ff1493",
  deepskyblue: "#00bfff",
  dimgray: "#696969",
  dimgrey: "#696969",
  dodgerblue: "#1e90ff",
  firebrick: "#b22222",
  floralwhite: "#fffaf0",
  forestgreen: "#228b22",
  fuchsia: "#ff00ff",
  gainsboro: "#dcdcdc",
  ghostwhite: "#f8f8ff",
  gold: "#ffd700",
  goldenrod: "#daa520",
  gray: "#808080",
  green: "#008000",
  greenyellow: "#adff2f",
  grey: "#808080",
  honeydew: "#f0fff0",
  hotpink: "#ff69b4",
  indianred: "#cd5c5c",
  indigo: "#4b0082",
  ivory: "#fffff0",
  khaki: "#f0e68c",
  lavender: "#e6e6fa",
  lavenderblush: "#fff0f5",
  lawngreen: "#7cfc00",
  lemonchiffon: "#fffacd",
  lightblue: "#add8e6",
  lightcoral: "#f08080",
  lightcyan: "#e0ffff",
  lightgoldenrodyellow: "#fafad2",
  lightgray: "#d3d3d3",
  lightgreen: "#90ee90",
  lightgrey: "#d3d3d3",
  lightpink: "#ffb6c1",
  lightsalmon: "#ffa07a",
  lightseagreen: "#20b2aa",
  lightskyblue: "#87cefa",
  lightslategray: "#778899",
  lightslategrey: "#778899",
  lightsteelblue: "#b0c4de",
  lightyellow: "#ffffe0",
  lime: "#00ff00",
  limegreen: "#32cd32",
  linen: "#faf0e6",
  magenta: "#ff00ff",
  maroon: "#800000",
  mediumaquamarine: "#66cdaa",
  mediumblue: "#0000cd",
  mediumorchid: "#ba55d3",
  mediumpurple: "#9370db",
  mediumseagreen: "#3cb371",
  mediumslateblue: "#7b68ee",
  mediumspringgreen: "#00fa9a",
  mediumturquoise: "#48d1cc",
  mediumvioletred: "#c71585",
  midnightblue: "#191970",
  mintcream: "#f5fffa",
  mistyrose: "#ffe4e1",
  moccasin: "#ffe4b5",
  navajowhite: "#ffdead",
  navy: "#000080",
  oldlace: "#fdf5e6",
  olive: "#808000",
  olivedrab: "#6b8e23",
  orange: "#ffa500",
  orangered: "#ff4500",
  orchid: "#da70d6",
  palegoldenrod: "#eee8aa",
  palegreen: "#98fb98",
  paleturquoise: "#afeeee",
  palevioletred: "#db7093",
  papayawhip: "#ffefd5",
  peachpuff: "#ffdab9",
  peru: "#cd853f",
  pink: "#ffc0cb",
  plum: "#dda0dd",
  powderblue: "#b0e0e6",
  purple: "#800080",
  red: "#ff0000",
  rosybrown: "#bc8f8f",
  royalblue: "#4169e1",
  saddlebrown: "#8b4513",
  salmon: "#fa8072",
  sandybrown: "#f4a460",
  seagreen: "#2e8b57",
  seashell: "#fff5ee",
  sienna: "#a0522d",
  silver: "#c0c0c0",
  skyblue: "#87ceeb",
  slateblue: "#6a5acd",
  slategray: "#708090",
  slategrey: "#708090",
  snow: "#fffafa",
  springgreen: "#00ff7f",
  steelblue: "#4682b4",
  tan: "#d2b48c",
  teal: "#008080",
  thistle: "#d8bfd8",
  tomato: "#ff6347",
  turquoise: "#40e0d0",
  violet: "#ee82ee",
  wheat: "#f5deb3",
  white: "#ffffff",
  whitesmoke: "#f5f5f5",
  yellow: "#ffff00",
  yellowgreen: "#9acd32"
});

d3_rgb_names.forEach(function(key, value) {
  d3_rgb_names.set(key, d3_rgb_parse(value, d3_rgb, d3_hsl_rgb));
});
d3.hsl = function(h, s, l) {
  return arguments.length === 1
      ? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l)
      : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl))
      : d3_hsl(+h, +s, +l);
};

function d3_hsl(h, s, l) {
  return new d3_Hsl(h, s, l);
}

function d3_Hsl(h, s, l) {
  this.h = h;
  this.s = s;
  this.l = l;
}

d3_Hsl.prototype.brighter = function(k) {
  k = Math.pow(0.7, arguments.length ? k : 1);
  return d3_hsl(this.h, this.s, this.l / k);
};

d3_Hsl.prototype.darker = function(k) {
  k = Math.pow(0.7, arguments.length ? k : 1);
  return d3_hsl(this.h, this.s, k * this.l);
};

d3_Hsl.prototype.rgb = function() {
  return d3_hsl_rgb(this.h, this.s, this.l);
};

d3_Hsl.prototype.toString = function() {
  return this.rgb().toString();
};

function d3_hsl_rgb(h, s, l) {
  var m1,
      m2;

  /* Some simple corrections for h, s and l. */
  h = h % 360; if (h < 0) h += 360;
  s = s < 0 ? 0 : s > 1 ? 1 : s;
  l = l < 0 ? 0 : l > 1 ? 1 : l;

  /* From FvD 13.37, CSS Color Module Level 3 */
  m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
  m1 = 2 * l - m2;

  function v(h) {
    if (h > 360) h -= 360;
    else if (h < 0) h += 360;
    if (h < 60) return m1 + (m2 - m1) * h / 60;
    if (h < 180) return m2;
    if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
    return m1;
  }

  function vv(h) {
    return Math.round(v(h) * 255);
  }

  return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
}
function d3_noop() {}
;d3.csv = function(url, callback) {
  d3.text(url, "text/csv", function(text) {
    callback(text && d3.csv.parse(text));
  });
};
d3.csv.parse = function(text) {
  var header;
  return d3.csv.parseRows(text, function(row, i) {
    if (i) {
      var o = {}, j = -1, m = header.length;
      while (++j < m) o[header[j]] = j < row.length ? row[j] : null;
      return o;
    } else {
      header = row;
      return null;
    }
  });
};

d3.csv.parseRows = function(text, f) {
  var EOL = {}, // sentinel value for end-of-line
      EOF = {}, // sentinel value for end-of-file
      rows = [], // output rows
      re = /\r\n|[,\r\n]/g, // field separator regex
      n = 0, // the current line number
      t, // the current token
      eol; // is the current token followed by EOL?

  re.lastIndex = 0; // work-around bug in FF 3.6

  /** @private Returns the next token. */
  function token() {
    if (re.lastIndex >= text.length) return EOF; // special case: end of file
    if (eol) { eol = false; return EOL; } // special case: end of line

    // special case: quotes
    var j = re.lastIndex;
    if (text.charCodeAt(j) === 34) {
      var i = j;
      while (i++ < text.length) {
        if (text.charCodeAt(i) === 34) {
          if (text.charCodeAt(i + 1) !== 34) break;
          i++;
        }
      }
      re.lastIndex = i + 2;
      var c = text.charCodeAt(i + 1);
      if (c === 13) {
        eol = true;
        if (text.charCodeAt(i + 2) === 10) re.lastIndex++;
      } else if (c === 10) {
        eol = true;
      }
      return text.substring(j + 1, i).replace(/""/g, "\"");
    }

    // common case
    var m = re.exec(text);
    if (m) {
      eol = m[0].charCodeAt(0) !== 44;
      return text.substring(j, m.index);
    }
    re.lastIndex = text.length;
    return text.substring(j);
  }

  while ((t = token()) !== EOF) {
    var a = [];
    while ((t !== EOL) && (t !== EOF)) {
      a.push(t);
      t = token();
    }
    if (f && !(a = f(a, n++))) continue;
    rows.push(a);
  }

  return rows;
};
d3.csv.format = function(rows) {
  return d3_array_map(rows, d3_csv_formatRow).join("\n");
};

function d3_csv_formatRow(row) {
  return d3_array_map(row, d3_csv_formatValue).join(",");
}

function d3_csv_formatValue(text) {
  return /[",\n]/.test(text)
      ? "\"" + text.replace(/\"/g, "\"\"") + "\""
      : text;
}
;d3.scale = {};

function d3_scaleExtent(domain) {
  var start = domain[0], stop = domain[domain.length - 1];
  return start < stop ? [start, stop] : [stop, start];
}

function d3_scaleRange(scale) {
  return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
}
function d3_scale_nice(domain, nice) {
  var i0 = 0,
      i1 = domain.length - 1,
      x0 = domain[i0],
      x1 = domain[i1],
      dx;

  if (x1 < x0) {
    dx = i0; i0 = i1; i1 = dx;
    dx = x0; x0 = x1; x1 = dx;
  }

  if (dx = x1 - x0) {
    nice = nice(dx);
    domain[i0] = nice.floor(x0);
    domain[i1] = nice.ceil(x1);
  }

  return domain;
}

function d3_scale_niceDefault() {
  return Math;
}
d3.scale.linear = function() {
  return d3_scale_linear([0, 1], [0, 1], d3.interpolate, false);
};

function d3_scale_linear(domain, range, interpolate, clamp) {
  var output,
      input;

  function rescale() {
    var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear,
        uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
    output = linear(domain, range, uninterpolate, interpolate);
    input = linear(range, domain, uninterpolate, d3.interpolate);
    return scale;
  }

  function scale(x) {
    return output(x);
  }

  // Note: requires range is coercible to number!
  scale.invert = function(y) {
    return input(y);
  };

  scale.domain = function(x) {
    if (!arguments.length) return domain;
    domain = d3_array_map(x, Number)
    return rescale();
  };

  scale.range = function(x) {
    if (!arguments.length) return range;
    range = x;
    return rescale();
  };

  scale.rangeRound = function(x) {
    return scale.range(x).interpolate(d3.interpolateRound);
  };

  scale.clamp = function(x) {
    if (!arguments.length) return clamp;
    clamp = x;
    return rescale();
  };

  scale.interpolate = function(x) {
    if (!arguments.length) return interpolate;
    interpolate = x;
    return rescale();
  };

  scale.ticks = function(m) {
    return d3_scale_linearTicks(domain, m);
  };

  scale.tickFormat = function(m) {
    return d3_scale_linearTickFormat(domain, m);
  };

  scale.nice = function() {
    d3_scale_nice(domain, d3_scale_linearNice);
    return rescale();
  };

  scale.copy = function() {
    return d3_scale_linear(domain, range, interpolate, clamp);
  };

  return rescale();
}

function d3_scale_linearRebind(scale, linear) {
  return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
}

function d3_scale_linearNice(dx) {
  dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
  return {
    floor: function(x) { return Math.floor(x / dx) * dx; },
    ceil: function(x) { return Math.ceil(x / dx) * dx; }
  };
}

function d3_scale_linearTickRange(domain, m) {
  var extent = d3_scaleExtent(domain),
      span = extent[1] - extent[0],
      step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)),
      err = m / span * step;

  // Filter ticks to get closer to the desired count.
  if (err <= .15) step *= 10;
  else if (err <= .35) step *= 5;
  else if (err <= .75) step *= 2;

  // Round start and stop values to step interval.
  extent[0] = Math.ceil(extent[0] / step) * step;
  extent[1] = Math.floor(extent[1] / step) * step + step * .5; // inclusive
  extent[2] = step;
  return extent;
}

function d3_scale_linearTicks(domain, m) {
  return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
}

function d3_scale_linearTickFormat(domain, m) {
  return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
}
function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
  var u = uninterpolate(domain[0], domain[1]),
      i = interpolate(range[0], range[1]);
  return function(x) {
    return i(u(x));
  };
}
function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
  var u = [],
      i = [],
      j = 0,
      k = Math.min(domain.length, range.length) - 1;

  // Handle descending domains.
  if (domain[k] < domain[0]) {
    domain = domain.slice().reverse();
    range = range.slice().reverse();
  }

  while (++j <= k) {
    u.push(uninterpolate(domain[j - 1], domain[j]));
    i.push(interpolate(range[j - 1], range[j]));
  }

  return function(x) {
    var j = d3.bisect(domain, x, 1, k) - 1;
    return i[j](u[j](x));
  };
}
d3.scale.log = function() {
  return d3_scale_log(d3.scale.linear(), d3_scale_logp);
};

function d3_scale_log(linear, log) {
  var pow = log.pow;

  function scale(x) {
    return linear(log(x));
  }

  scale.invert = function(x) {
    return pow(linear.invert(x));
  };

  scale.domain = function(x) {
    if (!arguments.length) return d3_array_map(linear.domain(), pow);
    log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
    pow = log.pow;
    linear.domain(d3_array_map(x, log));
    return scale;
  };

  scale.nice = function() {
    linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
    return scale;
  };

  scale.ticks = function() {
    var extent = d3_scaleExtent(linear.domain()),
        ticks = [];
    if (extent.every(isFinite)) {
      var i = Math.floor(extent[0]),
          j = Math.ceil(extent[1]),
          u = pow(extent[0]),
          v = pow(extent[1]);
      if (log === d3_scale_logn) {
        ticks.push(pow(i));
        for (; i++ < j;) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
      } else {
        for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
        ticks.push(pow(i));
      }
      for (i = 0; ticks[i] < u; i++) {} // strip small values
      for (j = ticks.length; ticks[j - 1] > v; j--) {} // strip big values
      ticks = ticks.slice(i, j);
    }
    return ticks;
  };

  scale.tickFormat = function(n, format) {
    if (arguments.length < 2) format = d3_scale_logFormat;
    if (arguments.length < 1) return format;
    var k = n / scale.ticks().length,
        f = log === d3_scale_logn ? (e = -1e-12, Math.floor) : (e = 1e-12, Math.ceil),
        e;
    return function(d) {
      return d / pow(f(log(d) + e)) < k ? format(d) : "";
    };
  };

  scale.copy = function() {
    return d3_scale_log(linear.copy(), log);
  };

  return d3_scale_linearRebind(scale, linear);
}

var d3_scale_logFormat = d3.format(".0e");

function d3_scale_logp(x) {
  return Math.log(x < 0 ? 0 : x) / Math.LN10;
}

function d3_scale_logn(x) {
  return -Math.log(x > 0 ? 0 : -x) / Math.LN10;
}

d3_scale_logp.pow = function(x) {
  return Math.pow(10, x);
};

d3_scale_logn.pow = function(x) {
  return -Math.pow(10, -x);
};
d3.scale.pow = function() {
  return d3_scale_pow(d3.scale.linear(), 1);
};

function d3_scale_pow(linear, exponent) {
  var powp = d3_scale_powPow(exponent),
      powb = d3_scale_powPow(1 / exponent);

  function scale(x) {
    return linear(powp(x));
  }

  scale.invert = function(x) {
    return powb(linear.invert(x));
  };

  scale.domain = function(x) {
    if (!arguments.length) return d3_array_map(linear.domain(), powb);
    linear.domain(d3_array_map(x, powp));
    return scale;
  };

  scale.ticks = function(m) {
    return d3_scale_linearTicks(scale.domain(), m);
  };

  scale.tickFormat = function(m) {
    return d3_scale_linearTickFormat(scale.domain(), m);
  };

  scale.nice = function() {
    return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
  };

  scale.exponent = function(x) {
    if (!arguments.length) return exponent;
    var domain = scale.domain();
    powp = d3_scale_powPow(exponent = x);
    powb = d3_scale_powPow(1 / exponent);
    return scale.domain(domain);
  };

  scale.copy = function() {
    return d3_scale_pow(linear.copy(), exponent);
  };

  return d3_scale_linearRebind(scale, linear);
}

function d3_scale_powPow(e) {
  return function(x) {
    return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
  };
}
d3.scale.sqrt = function() {
  return d3.scale.pow().exponent(.5);
};
d3.scale.ordinal = function() {
  return d3_scale_ordinal([], {t: "range", x: []});
};

function d3_scale_ordinal(domain, ranger) {
  var index,
      range,
      rangeBand;

  function scale(x) {
    return range[((index.get(x) || index.set(x, domain.push(x))) - 1) % range.length];
  }

  function steps(start, step) {
    return d3_array_map(d3.range(domain.length), function(i) { return start + step * i; });
  }

  scale.domain = function(x) {
    if (!arguments.length) return domain;
    domain = [];
    index = new d3_Map;
    var i = -1, n = x.length, xi;
    while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
    return scale[ranger.t](ranger.x, ranger.p);
  };

  scale.range = function(x) {
    if (!arguments.length) return range;
    range = x;
    rangeBand = 0;
    ranger = {t: "range", x: x};
    return scale;
  };

  scale.rangePoints = function(x, padding) {
    if (arguments.length < 2) padding = 0;
    var start = x[0],
        stop = x[1],
        step = (stop - start) / (domain.length - 1 + padding);
    range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
    rangeBand = 0;
    ranger = {t: "rangePoints", x: x, p: padding};
    return scale;
  };

  scale.rangeBands = function(x, padding) {
    if (arguments.length < 2) padding = 0;
    var reverse = x[1] < x[0],
        start = x[reverse - 0],
        stop = x[1 - reverse],
        step = (stop - start) / (domain.length + padding);
    range = steps(start + step * padding, step);
    if (reverse) range.reverse();
    rangeBand = step * (1 - padding);
    ranger = {t: "rangeBands", x: x, p: padding};
    return scale;
  };

  scale.rangeRoundBands = function(x, padding) {
    if (arguments.length < 2) padding = 0;
    var reverse = x[1] < x[0],
        start = x[reverse - 0],
        stop = x[1 - reverse],
        step = Math.floor((stop - start) / (domain.length + padding)),
        error = stop - start - (domain.length - padding) * step;
    range = steps(start + Math.round(error / 2), step);
    if (reverse) range.reverse();
    rangeBand = Math.round(step * (1 - padding));
    ranger = {t: "rangeRoundBands", x: x, p: padding};
    return scale;
  };

  scale.rangeBand = function() {
    return rangeBand;
  };

  scale.rangeExtent = function() {
    return d3_scaleExtent(ranger.x);
  };

  scale.copy = function() {
    return d3_scale_ordinal(domain, ranger);
  };

  return scale.domain(domain);
}
/*
 * This product includes color specifications and designs developed by Cynthia
 * Brewer (http://colorbrewer.org/). See lib/colorbrewer for more information.
 */

d3.scale.category10 = function() {
  return d3.scale.ordinal().range(d3_category10);
};

d3.scale.category20 = function() {
  return d3.scale.ordinal().range(d3_category20);
};

d3.scale.category20b = function() {
  return d3.scale.ordinal().range(d3_category20b);
};

d3.scale.category20c = function() {
  return d3.scale.ordinal().range(d3_category20c);
};

var d3_category10 = [
  "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
  "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf"
];

var d3_category20 = [
  "#1f77b4", "#aec7e8",
  "#ff7f0e", "#ffbb78",
  "#2ca02c", "#98df8a",
  "#d62728", "#ff9896",
  "#9467bd", "#c5b0d5",
  "#8c564b", "#c49c94",
  "#e377c2", "#f7b6d2",
  "#7f7f7f", "#c7c7c7",
  "#bcbd22", "#dbdb8d",
  "#17becf", "#9edae5"
];

var d3_category20b = [
  "#393b79", "#5254a3", "#6b6ecf", "#9c9ede",
  "#637939", "#8ca252", "#b5cf6b", "#cedb9c",
  "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94",
  "#843c39", "#ad494a", "#d6616b", "#e7969c",
  "#7b4173", "#a55194", "#ce6dbd", "#de9ed6"
];

var d3_category20c = [
  "#3182bd", "#6baed6", "#9ecae1", "#c6dbef",
  "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2",
  "#31a354", "#74c476", "#a1d99b", "#c7e9c0",
  "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb",
  "#636363", "#969696", "#bdbdbd", "#d9d9d9"
];
d3.scale.quantile = function() {
  return d3_scale_quantile([], []);
};

function d3_scale_quantile(domain, range) {
  var thresholds;

  function rescale() {
    var k = 0,
        n = domain.length,
        q = range.length;
    thresholds = [];
    while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
    return scale;
  }

  function scale(x) {
    if (isNaN(x = +x)) return NaN;
    return range[d3.bisect(thresholds, x)];
  }

  scale.domain = function(x) {
    if (!arguments.length) return domain;
    domain = x.filter(function(d) { return !isNaN(d); }).sort(d3.ascending);
    return rescale();
  };

  scale.range = function(x) {
    if (!arguments.length) return range;
    range = x;
    return rescale();
  };

  scale.quantiles = function() {
    return thresholds;
  };

  scale.copy = function() {
    return d3_scale_quantile(domain, range); // copy on write!
  };

  return rescale();
}
d3.scale.quantize = function() {
  return d3_scale_quantize(0, 1, [0, 1]);
};

function d3_scale_quantize(x0, x1, range) {
  var kx, i;

  function scale(x) {
    return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
  }

  function rescale() {
    kx = range.length / (x1 - x0);
    i = range.length - 1;
    return scale;
  }

  scale.domain = function(x) {
    if (!arguments.length) return [x0, x1];
    x0 = +x[0];
    x1 = +x[x.length - 1];
    return rescale();
  };

  scale.range = function(x) {
    if (!arguments.length) return range;
    range = x;
    return rescale();
  };

  scale.copy = function() {
    return d3_scale_quantize(x0, x1, range); // copy on write
  };

  return rescale();
}
d3.scale.identity = function() {
  return d3_scale_identity([0, 1]);
};

function d3_scale_identity(domain) {

  function identity(x) { return +x; }

  identity.invert = identity;

  identity.domain = identity.range = function(x) {
    if (!arguments.length) return domain;
    domain = d3_array_map(x, identity);
    return identity;
  };

  identity.ticks = function(m) {
    return d3_scale_linearTicks(domain, m);
  };

  identity.tickFormat = function(m) {
    return d3_scale_linearTickFormat(domain, m);
  };

  identity.copy = function() {
    return d3_scale_identity(domain);
  };

  return identity;
}
;d3.time = {};

var d3_time = Date;

function d3_time_utc() {
  this._ = new Date(arguments.length > 1
      ? Date.UTC.apply(this, arguments)
      : arguments[0]);
}

d3_time_utc.prototype = {
  getDate: function() { return this._.getUTCDate(); },
  getDay: function() { return this._.getUTCDay(); },
  getFullYear: function() { return this._.getUTCFullYear(); },
  getHours: function() { return this._.getUTCHours(); },
  getMilliseconds: function() { return this._.getUTCMilliseconds(); },
  getMinutes: function() { return this._.getUTCMinutes(); },
  getMonth: function() { return this._.getUTCMonth(); },
  getSeconds: function() { return this._.getUTCSeconds(); },
  getTime: function() { return this._.getTime(); },
  getTimezoneOffset: function() { return 0; },
  valueOf: function() { return this._.valueOf(); },
  setDate: function() { d3_time_prototype.setUTCDate.apply(this._, arguments); },
  setDay: function() { d3_time_prototype.setUTCDay.apply(this._, arguments); },
  setFullYear: function() { d3_time_prototype.setUTCFullYear.apply(this._, arguments); },
  setHours: function() { d3_time_prototype.setUTCHours.apply(this._, arguments); },
  setMilliseconds: function() { d3_time_prototype.setUTCMilliseconds.apply(this._, arguments); },
  setMinutes: function() { d3_time_prototype.setUTCMinutes.apply(this._, arguments); },
  setMonth: function() { d3_time_prototype.setUTCMonth.apply(this._, arguments); },
  setSeconds: function() { d3_time_prototype.setUTCSeconds.apply(this._, arguments); },
  setTime: function() { d3_time_prototype.setTime.apply(this._, arguments); }
};

var d3_time_prototype = Date.prototype;
d3.time.format = function(template) {
  var n = template.length;

  function format(date) {
    var string = [],
        i = -1,
        j = 0,
        c,
        f;
    while (++i < n) {
      if (template.charCodeAt(i) == 37) {
        string.push(
            template.substring(j, i),
            (f = d3_time_formats[c = template.charAt(++i)])
            ? f(date) : c);
        j = i + 1;
      }
    }
    string.push(template.substring(j, i));
    return string.join("");
  }

  format.parse = function(string) {
    var d = {y: 1900, m: 0, d: 1, H: 0, M: 0, S: 0, L: 0},
        i = d3_time_parse(d, template, string, 0);
    if (i != string.length) return null;

    // The am-pm flag is 0 for AM, and 1 for PM.
    if ("p" in d) d.H = d.H % 12 + d.p * 12;

    var date = new d3_time();
    date.setFullYear(d.y, d.m, d.d);
    date.setHours(d.H, d.M, d.S, d.L);
    return date;
  };

  format.toString = function() {
    return template;
  };

  return format;
};

function d3_time_parse(date, template, string, j) {
  var c,
      p,
      i = 0,
      n = template.length,
      m = string.length;
  while (i < n) {
    if (j >= m) return -1;
    c = template.charCodeAt(i++);
    if (c == 37) {
      p = d3_time_parsers[template.charAt(i++)];
      if (!p || ((j = p(date, string, j)) < 0)) return -1;
    } else if (c != string.charCodeAt(j++)) {
      return -1;
    }
  }
  return j;
}

var d3_time_zfill2 = d3.format("02d"),
    d3_time_zfill3 = d3.format("03d"),
    d3_time_zfill4 = d3.format("04d"),
    d3_time_sfill2 = d3.format("2d");

var d3_time_formats = {
  a: function(d) { return d3_time_weekdays[d.getDay()].substring(0, 3); },
  A: function(d) { return d3_time_weekdays[d.getDay()]; },
  b: function(d) { return d3_time_months[d.getMonth()].substring(0, 3); },
  B: function(d) { return d3_time_months[d.getMonth()]; },
  c: d3.time.format("%a %b %e %H:%M:%S %Y"),
  d: function(d) { return d3_time_zfill2(d.getDate()); },
  e: function(d) { return d3_time_sfill2(d.getDate()); },
  H: function(d) { return d3_time_zfill2(d.getHours()); },
  I: function(d) { return d3_time_zfill2(d.getHours() % 12 || 12); },
  j: function(d) { return d3_time_zfill3(1 + d3.time.dayOfYear(d)); },
  L: function(d) { return d3_time_zfill3(d.getMilliseconds()); },
  m: function(d) { return d3_time_zfill2(d.getMonth() + 1); },
  M: function(d) { return d3_time_zfill2(d.getMinutes()); },
  p: function(d) { return d.getHours() >= 12 ? "PM" : "AM"; },
  S: function(d) { return d3_time_zfill2(d.getSeconds()); },
  U: function(d) { return d3_time_zfill2(d3.time.sundayOfYear(d)); },
  w: function(d) { return d.getDay(); },
  W: function(d) { return d3_time_zfill2(d3.time.mondayOfYear(d)); },
  x: d3.time.format("%m/%d/%y"),
  X: d3.time.format("%H:%M:%S"),
  y: function(d) { return d3_time_zfill2(d.getFullYear() % 100); },
  Y: function(d) { return d3_time_zfill4(d.getFullYear() % 10000); },
  Z: d3_time_zone,
  "%": function(d) { return "%"; }
};

var d3_time_parsers = {
  a: d3_time_parseWeekdayAbbrev,
  A: d3_time_parseWeekday,
  b: d3_time_parseMonthAbbrev,
  B: d3_time_parseMonth,
  c: d3_time_parseLocaleFull,
  d: d3_time_parseDay,
  e: d3_time_parseDay,
  H: d3_time_parseHour24,
  I: d3_time_parseHour24,
  // j: function(d, s, i) { /*TODO day of year [001,366] */ return i; },
  L: d3_time_parseMilliseconds,
  m: d3_time_parseMonthNumber,
  M: d3_time_parseMinutes,
  p: d3_time_parseAmPm,
  S: d3_time_parseSeconds,
  // U: function(d, s, i) { /*TODO week number (sunday) [00,53] */ return i; },
  // w: function(d, s, i) { /*TODO weekday [0,6] */ return i; },
  // W: function(d, s, i) { /*TODO week number (monday) [00,53] */ return i; },
  x: d3_time_parseLocaleDate,
  X: d3_time_parseLocaleTime,
  y: d3_time_parseYear,
  Y: d3_time_parseFullYear
  // ,
  // Z: function(d, s, i) { /*TODO time zone */ return i; },
  // "%": function(d, s, i) { /*TODO literal % */ return i; }
};

// Note: weekday is validated, but does not set the date.
function d3_time_parseWeekdayAbbrev(date, string, i) {
  return d3_time_weekdayAbbrevRe.test(string.substring(i, i += 3)) ? i : -1;
}

// Note: weekday is validated, but does not set the date.
function d3_time_parseWeekday(date, string, i) {
  d3_time_weekdayRe.lastIndex = 0;
  var n = d3_time_weekdayRe.exec(string.substring(i, i + 10));
  return n ? i += n[0].length : -1;
}

var d3_time_weekdayAbbrevRe = /^(?:sun|mon|tue|wed|thu|fri|sat)/i,
    d3_time_weekdayRe = /^(?:Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday)/i,
    d3_time_weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];

function d3_time_parseMonthAbbrev(date, string, i) {
  var n = d3_time_monthAbbrevLookup.get(string.substring(i, i += 3).toLowerCase());
  return n == null ? -1 : (date.m = n, i);
}

var d3_time_monthAbbrevLookup = d3.map({
  jan: 0,
  feb: 1,
  mar: 2,
  apr: 3,
  may: 4,
  jun: 5,
  jul: 6,
  aug: 7,
  sep: 8,
  oct: 9,
  nov: 10,
  dec: 11
});

function d3_time_parseMonth(date, string, i) {
  d3_time_monthRe.lastIndex = 0;
  var n = d3_time_monthRe.exec(string.substring(i, i + 12));
  return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
}

var d3_time_monthRe = /^(?:January|February|March|April|May|June|July|August|September|October|November|December)/ig;

var d3_time_monthLookup = d3.map({
  january: 0,
  february: 1,
  march: 2,
  april: 3,
  may: 4,
  june: 5,
  july: 6,
  august: 7,
  september: 8,
  october: 9,
  november: 10,
  december: 11
});

var d3_time_months = [
  "January",
  "February",
  "March",
  "April",
  "May",
  "June",
  "July",
  "August",
  "September",
  "October",
  "November",
  "December"
];

function d3_time_parseLocaleFull(date, string, i) {
  return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
}

function d3_time_parseLocaleDate(date, string, i) {
  return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
}

function d3_time_parseLocaleTime(date, string, i) {
  return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
}

function d3_time_parseFullYear(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 4));
  return n ? (date.y = +n[0], i += n[0].length) : -1;
}

function d3_time_parseYear(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 2));
  return n ? (date.y = d3_time_century() + +n[0], i += n[0].length) : -1;
}

function d3_time_century() {
  return ~~(new Date().getFullYear() / 1000) * 1000;
}

function d3_time_parseMonthNumber(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 2));
  return n ? (date.m = n[0] - 1, i += n[0].length) : -1;
}

function d3_time_parseDay(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 2));
  return n ? (date.d = +n[0], i += n[0].length) : -1;
}

// Note: we don't validate that the hour is in the range [0,23] or [1,12].
function d3_time_parseHour24(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 2));
  return n ? (date.H = +n[0], i += n[0].length) : -1;
}

function d3_time_parseMinutes(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 2));
  return n ? (date.M = +n[0], i += n[0].length) : -1;
}

function d3_time_parseSeconds(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 2));
  return n ? (date.S = +n[0], i += n[0].length) : -1;
}

function d3_time_parseMilliseconds(date, string, i) {
  d3_time_numberRe.lastIndex = 0;
  var n = d3_time_numberRe.exec(string.substring(i, i + 3));
  return n ? (date.L = +n[0], i += n[0].length) : -1;
}

// Note: we don't look at the next directive.
var d3_time_numberRe = /\s*\d+/;

function d3_time_parseAmPm(date, string, i) {
  var n = d3_time_amPmLookup.get(string.substring(i, i += 2).toLowerCase());
  return n == null ? -1 : (date.p = n, i);
}

var d3_time_amPmLookup = d3.map({
  am: 0,
  pm: 1
});

// TODO table of time zone offset names?
function d3_time_zone(d) {
  var z = d.getTimezoneOffset(),
      zs = z > 0 ? "-" : "+",
      zh = ~~(Math.abs(z) / 60),
      zm = Math.abs(z) % 60;
  return zs + d3_time_zfill2(zh) + d3_time_zfill2(zm);
}
d3.time.format.utc = function(template) {
  var local = d3.time.format(template);

  function format(date) {
    try {
      d3_time = d3_time_utc;
      var utc = new d3_time();
      utc._ = date;
      return local(utc);
    } finally {
      d3_time = Date;
    }
  }

  format.parse = function(string) {
    try {
      d3_time = d3_time_utc;
      var date = local.parse(string);
      return date && date._;
    } finally {
      d3_time = Date;
    }
  };

  format.toString = local.toString;

  return format;
};
var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");

d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;

function d3_time_formatIsoNative(date) {
  return date.toISOString();
}

d3_time_formatIsoNative.parse = function(string) {
  return new Date(string);
};

d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
function d3_time_interval(local, step, number) {

  function round(date) {
    var d0 = local(date), d1 = offset(d0, 1);
    return date - d0 < d1 - date ? d0 : d1;
  }

  function ceil(date) {
    step(date = local(new d3_time(date - 1)), 1);
    return date;
  }

  function offset(date, k) {
    step(date = new d3_time(+date), k);
    return date;
  }

  function range(t0, t1, dt) {
    var time = ceil(t0), times = [];
    if (dt > 1) {
      while (time < t1) {
        if (!(number(time) % dt)) times.push(new Date(+time));
        step(time, 1);
      }
    } else {
      while (time < t1) times.push(new Date(+time)), step(time, 1);
    }
    return times;
  }

  function range_utc(t0, t1, dt) {
    try {
      d3_time = d3_time_utc;
      var utc = new d3_time_utc();
      utc._ = t0;
      return range(utc, t1, dt);
    } finally {
      d3_time = Date;
    }
  }

  local.floor = local;
  local.round = round;
  local.ceil = ceil;
  local.offset = offset;
  local.range = range;

  var utc = local.utc = d3_time_interval_utc(local);
  utc.floor = utc;
  utc.round = d3_time_interval_utc(round);
  utc.ceil = d3_time_interval_utc(ceil);
  utc.offset = d3_time_interval_utc(offset);
  utc.range = range_utc;

  return local;
}

function d3_time_interval_utc(method) {
  return function(date, k) {
    try {
      d3_time = d3_time_utc;
      var utc = new d3_time_utc();
      utc._ = date;
      return method(utc, k)._;
    } finally {
      d3_time = Date;
    }
  };
}
d3.time.second = d3_time_interval(function(date) {
  return new d3_time(Math.floor(date / 1e3) * 1e3);
}, function(date, offset) {
  date.setTime(date.getTime() + Math.floor(offset) * 1e3); // DST breaks setSeconds
}, function(date) {
  return date.getSeconds();
});

d3.time.seconds = d3.time.second.range;
d3.time.seconds.utc = d3.time.second.utc.range;
d3.time.minute = d3_time_interval(function(date) {
  return new d3_time(Math.floor(date / 6e4) * 6e4);
}, function(date, offset) {
  date.setTime(date.getTime() + Math.floor(offset) * 6e4); // DST breaks setMinutes
}, function(date) {
  return date.getMinutes();
});

d3.time.minutes = d3.time.minute.range;
d3.time.minutes.utc = d3.time.minute.utc.range;
d3.time.hour = d3_time_interval(function(date) {
  var timezone = date.getTimezoneOffset() / 60;
  return new d3_time((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
}, function(date, offset) {
  date.setTime(date.getTime() + Math.floor(offset) * 36e5); // DST breaks setHours
}, function(date) {
  return date.getHours();
});

d3.time.hours = d3.time.hour.range;
d3.time.hours.utc = d3.time.hour.utc.range;
d3.time.day = d3_time_interval(function(date) {
  return new d3_time(date.getFullYear(), date.getMonth(), date.getDate());
}, function(date, offset) {
  date.setDate(date.getDate() + offset);
}, function(date) {
  return date.getDate() - 1;
});

d3.time.days = d3.time.day.range;
d3.time.days.utc = d3.time.day.utc.range;

d3.time.dayOfYear = function(date) {
  var year = d3.time.year(date);
  return Math.floor((date - year) / 864e5 - (date.getTimezoneOffset() - year.getTimezoneOffset()) / 1440);
};
d3_array_forEach(d3_time_weekdays, function(day, i) {
  day = day.toLowerCase();
  i = 7 - i;

  var interval = d3.time[day] = d3_time_interval(function(date) {
    (date = d3.time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
    return date;
  }, function(date, offset) {
    date.setDate(date.getDate() + Math.floor(offset) * 7);
  }, function(date) {
    var day = d3.time.year(date).getDay();
    return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
  });

  d3.time[day + "s"] = interval.range;
  d3.time[day + "s"].utc = interval.utc.range;

  d3.time[day + "OfYear"] = function(date) {
    var day = d3.time.year(date).getDay();
    return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7);
  };
});

d3.time.week = d3.time.sunday;
d3.time.weeks = d3.time.sunday.range;
d3.time.weeks.utc = d3.time.sunday.utc.range;
d3.time.weekOfYear = d3.time.sundayOfYear;
d3.time.month = d3_time_interval(function(date) {
  return new d3_time(date.getFullYear(), date.getMonth(), 1);
}, function(date, offset) {
  date.setMonth(date.getMonth() + offset);
}, function(date) {
  return date.getMonth();
});

d3.time.months = d3.time.month.range;
d3.time.months.utc = d3.time.month.utc.range;
d3.time.year = d3_time_interval(function(date) {
  return new d3_time(date.getFullYear(), 0, 1);
}, function(date, offset) {
  date.setFullYear(date.getFullYear() + offset);
}, function(date) {
  return date.getFullYear();
});

d3.time.years = d3.time.year.range;
d3.time.years.utc = d3.time.year.utc.range;
function d3_time_scale(linear, methods, format) {

  function scale(x) {
    return linear(x);
  }

  scale.invert = function(x) {
    return d3_time_scaleDate(linear.invert(x));
  };

  scale.domain = function(x) {
    if (!arguments.length) return d3_array_map(linear.domain(), d3_time_scaleDate);
    linear.domain(x);
    return scale;
  };

  scale.nice = function(m) {
    var extent = d3_time_scaleExtent(scale.domain());
    return scale.domain([m.floor(extent[0]), m.ceil(extent[1])]);
  };

  scale.ticks = function(m, k) {
    var extent = d3_time_scaleExtent(scale.domain());
    if (typeof m !== "function") {
      var span = extent[1] - extent[0],
          target = span / m,
          i = d3.bisect(d3_time_scaleSteps, target);
      if (i == d3_time_scaleSteps.length) return methods.year(extent, m);
      if (!i) return d3_array_map(linear.ticks(m), d3_time_scaleDate);
      if (Math.log(target / d3_time_scaleSteps[i - 1]) < Math.log(d3_time_scaleSteps[i] / target)) --i;
      m = methods[i];
      k = m[1];
      m = m[0].range;
    }
    return m(extent[0], new Date(+extent[1] + 1), k); // inclusive upper bound
  };

  scale.tickFormat = function() {
    return format;
  };

  scale.copy = function() {
    return d3_time_scale(linear.copy(), methods, format);
  };

  // TOOD expose d3_scale_linear_rebind?
  return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
}

// TODO expose d3_scaleExtent?
function d3_time_scaleExtent(domain) {
  var start = domain[0], stop = domain[domain.length - 1];
  return start < stop ? [start, stop] : [stop, start];
}

function d3_time_scaleDate(t) {
  return new Date(t);
}

function d3_time_scaleFormat(formats) {
  return function(date) {
    var i = formats.length - 1, f = formats[i];
    while (!f[1](date)) f = formats[--i];
    return f[0](date);
  };
}

function d3_time_scaleSetYear(y) {
  var d = new Date(y, 0, 1);
  d.setFullYear(y); // Y2K fail
  return d;
}

function d3_time_scaleGetYear(d) {
  var y = d.getFullYear(),
      d0 = d3_time_scaleSetYear(y),
      d1 = d3_time_scaleSetYear(y + 1);
  return y + (d - d0) / (d1 - d0);
}

var d3_time_scaleSteps = [
  1e3,    // 1-second
  5e3,    // 5-second
  15e3,   // 15-second
  3e4,    // 30-second
  6e4,    // 1-minute
  3e5,    // 5-minute
  9e5,    // 15-minute
  18e5,   // 30-minute
  36e5,   // 1-hour
  108e5,  // 3-hour
  216e5,  // 6-hour
  432e5,  // 12-hour
  864e5,  // 1-day
  1728e5, // 2-day
  6048e5, // 1-week
  2592e6, // 1-month
  7776e6, // 3-month
  31536e6 // 1-year
];

var d3_time_scaleLocalMethods = [
  [d3.time.second, 1],
  [d3.time.second, 5],
  [d3.time.second, 15],
  [d3.time.second, 30],
  [d3.time.minute, 1],
  [d3.time.minute, 5],
  [d3.time.minute, 15],
  [d3.time.minute, 30],
  [d3.time.hour, 1],
  [d3.time.hour, 3],
  [d3.time.hour, 6],
  [d3.time.hour, 12],
  [d3.time.day, 1],
  [d3.time.day, 2],
  [d3.time.week, 1],
  [d3.time.month, 1],
  [d3.time.month, 3],
  [d3.time.year, 1]
];

var d3_time_scaleLocalFormats = [
  [d3.time.format("%Y"), function(d) { return true; }],
  [d3.time.format("%B"), function(d) { return d.getMonth(); }],
  [d3.time.format("%b %d"), function(d) { return d.getDate() != 1; }],
  [d3.time.format("%a %d"), function(d) { return d.getDay() && d.getDate() != 1; }],
  [d3.time.format("%I %p"), function(d) { return d.getHours(); }],
  [d3.time.format("%I:%M"), function(d) { return d.getMinutes(); }],
  [d3.time.format(":%S"), function(d) { return d.getSeconds(); }],
  [d3.time.format(".%L"), function(d) { return d.getMilliseconds(); }]
];

var d3_time_scaleLinear = d3.scale.linear(),
    d3_time_scaleLocalFormat = d3_time_scaleFormat(d3_time_scaleLocalFormats);

d3_time_scaleLocalMethods.year = function(extent, m) {
  return d3_array_map(
    d3_time_scaleLinear.domain(d3_array_map(extent, d3_time_scaleGetYear))
    .ticks(m), d3_time_scaleSetYear);
};

d3.time.scale = function() {
  return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
};
var d3_time_scaleUTCMethods = d3_array_map(d3_time_scaleLocalMethods, function(m) {
  return [m[0].utc, m[1]];
});

var d3_time_scaleUTCFormats = [
  [d3.time.format.utc("%Y"), function(d) { return true; }],
  [d3.time.format.utc("%B"), function(d) { return d.getUTCMonth(); }],
  [d3.time.format.utc("%b %d"), function(d) { return d.getUTCDate() != 1; }],
  [d3.time.format.utc("%a %d"), function(d) { return d.getUTCDay() && d.getUTCDate() != 1; }],
  [d3.time.format.utc("%I %p"), function(d) { return d.getUTCHours(); }],
  [d3.time.format.utc("%I:%M"), function(d) { return d.getUTCMinutes(); }],
  [d3.time.format.utc(":%S"), function(d) { return d.getUTCSeconds(); }],
  [d3.time.format.utc(".%L"), function(d) { return d.getUTCMilliseconds(); }]
];

var d3_time_scaleUTCFormat = d3_time_scaleFormat(d3_time_scaleUTCFormats);

function d3_time_scaleUTCSetYear(y) {
  var d = new Date(Date.UTC(y, 0, 1));
  d.setUTCFullYear(y); // Y2K fail
  return d;
}

function d3_time_scaleUTCGetYear(d) {
  var y = d.getUTCFullYear(),
      d0 = d3_time_scaleUTCSetYear(y),
      d1 = d3_time_scaleUTCSetYear(y + 1);
  return y + (d - d0) / (d1 - d0);
}

d3_time_scaleUTCMethods.year = function(extent, m) {
  return d3_time_scaleLinear.domain(extent.map(d3_time_scaleUTCGetYear)).ticks(m).map(d3_time_scaleUTCSetYear);
};

d3.time.scale.utc = function() {
  return d3_time_scale(d3.scale.linear(), d3_time_scaleUTCMethods, d3_time_scaleUTCFormat);
};
;/**
 * Date: 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Collection of utility functions, that might be useful.
 **/

var gg = gg || {};
var u = u || {};

// this is for firefox
if (!console) {
  var console = {'log':function(){}, 'assert':function(){}, 'warn':function(){}};
}

;(function(gg, u) {
"use strict";
// u.makeClass - By John Resig (MIT Licensed)
// This allows the classes to be instantiated both with and without
// the new keyword. I.e.
//
// Animal = u.makeClass();
// a = Animal(); // OK.
// a = new Animal(); // Also OK.
//
// The attribute "init" is used as the object initializer.
// Refer to http://ejohn.org/blog/simple-class-instantiation/ for more info.
//
// The second argument is the prototype.
//
// Author(Jee) - I hacked this up bit, so that this function doesn't depend on
// arguments.callee, which is deprecated in ECMAScript 5.
u.makeClass = function(name, SuperClass){
  var _key = {}; // key to determine
  var Class = function(key, args){
    if (this instanceof Class) {
      if ( typeof this.init == "function" ) {
        // fixed this part.
        this.init.apply( this, (key === _key) ? args : arguments );
      }
      // if (!u.undef(name)) { this._cls_name = name; }
    } else {
      return new Class(_key, arguments);
    }
  };
  // Set the prototype to an instance of superClass.
  if (arguments.length >= 2) {
    Class.prototype = new SuperClass();
    Class.prototype.constructor = Class;
  }
  if (!u.undef(name)) {
    Class.prototype._cls_name =  name;
    Class._class = true
  }
  return Class;
};

/** checks whether given variable is undefined. */
u.undef = function(obj){ return (typeof obj == "undefined") }

u.constfunc = function(obj){
  return function(){
    return obj;
  };
};

/** Create an inverted index. */
u.invertedIndex = function(ary) {
  var result = {};
  _.each(ary, function(v,k) {
    result[v] = k;
  });
  return result;
};

u.identity = function(l) {
  return l;
}

u.strlenToPixel = function(l, type) {
  // 6 = approximate pixel per word
  // this is VERY crude
  if (type == 'bold') {
    return Math.max(7*l, 0);
  }
  return Math.max(6*l, 0);
}

u.cloneobj = function(obj) {
  // clone the given object, and set the .constructor property.
  var newobj = _.clone(obj);
  if (newobj.constructor != obj.constructor) {
    newobj.constructor = obj.constructor;
  }
  if (_.has(obj, '_attr')) {
    newobj._attr = _.clone(obj._attr);
  }
  return newobj;
}

/* Postfixes of rounded numbers
 * not sure if this might be useful in places ther than u.prettify()
 */
u.postfix = function(num, pow) {
  var POSTFIXES = { 0: '', 3:'k', 6:'m', 9:'b', 12:'t'}
  if (!_.isUndefined(POSTFIXES[pow])) {
    return num+POSTFIXES[pow];
  }
  var sign = pow > 0 ? '+' : '-'
  return num+'e'+sign+Math.abs(pow);
} 

/* This function will insert a comma at every third position in large numbers */
function formatNumber(n) {
    if (!isFinite(n)) {
        return n;
    }
    var s = ""+n, abs = Math.abs(n), _, i;
    if (abs >= 1000) {
        _  = (""+abs).split(/\./);
        i  = _[0].length % 3 || 3;
        _[0] = s.slice(0,i + (n < 0)) +
               _[0].slice(i).replace(/(\d{3})/g,',$1');
        s = _.join('.');
    }
    return s;
}

/* Round a number and prettify it */
u.prettify = function(num, exp) {
  // figure out the order of mangitude to round things to
  var exp_fixed = 0, exp_precision = 0;
  if (arguments.length == 1) {
    exp = Math.floor(Math.log(Math.abs(num ? num : 1))/Math.LN10);
  } else {
    exp = -exp;
  }

  /*if (arguments.length == 2 && exp == 0) {
    return(formatNumber(num));
  }*/

  if (arguments.length == 2 && (exp == 2 || exp == 5 || exp == 8 || exp == 11)) {
    exp_fixed = exp + 1;
    exp_precision = 1;
  } else if (exp == -1) {
    exp_fixed = 0;
    exp_precision = arguments.length == 2 ? 1 : 2;
  } else if (exp == -2) {
    exp_fixed = 0;
    exp_precision = arguments.length == 2 ? 2 : 3;
  } else if (exp == 1 || exp == 2) {
    exp_fixed = 0;
  } else if (exp > 3 && exp < 6) {
    exp_fixed = 3;
  } else if (exp > 6 && exp < 9) {
    exp_fixed = 6;
  } else if (exp > 9 && exp < 12) {
    exp_fixed = 9;
  } else if (exp > 12 && exp < 15) {
    exp_fixed = 12;
  } else {
    exp_fixed = exp;
    exp_precision = arguments.length == 2 ? 0 : 1;
  }

  var rounded = Math.round(num / Math.pow(10, exp_fixed-exp_precision));
  rounded /= Math.pow(10, exp_precision);
  rounded = rounded.toFixed(exp_precision);
  return u.postfix(formatNumber(rounded), exp_fixed)
}

u.roundTo = function(numeric, digits) {
  var base = Math.pow(10, digits);
  return Math.round(numeric * base) / base;
}

u.array = function(length, initializer) {
  // makes an array.
  var arr = [], i = length;
  var val;
  var hasInit = _.isFunction(initializer);
  while (i--) {
    if (hasInit) {
      val = initializer();
    } else {
      val = initializer;
    }
    arr[i] = val
  }
  return arr;
}

u.grid = function(rows, cols, initializer) {
  // make a 2-d array with rows, cols items;
  var r = 0, c = 0;
  var result = [];
  var hasInit = _.isFunction(initializer);

  for (r = 0; r < rows; r++) {
    var rowAry = [];
    for (c = 0; c < cols; c++) {
      if (hasInit) {
        // initializer is a function - invoke it.
        rowAry.push(initializer());
      } else {
        rowAry.push(initializer);
      }
    }
    result.push(rowAry);
  }
  return result;
}

// utility functions for getters / setters.
u.opts = function() {
  var GetterSetter = function(key, value) {
    if (arguments.length === 0) {
      gg.error(12, "Function opts() called with less than 1 parameter.")
    }
    // The actual getter / setter fucntion.
    var self = this;
    // function to be invoked whenever key / value has changed.
    var updateFunction = this._optsUpdate;
    if (!_.isFunction(updateFunction)) {
      // empty function.
      updateFunction = function(){};
    } else {
      updateFunction = _.bind(updateFunction, this);
    }

    if (arguments.length == 1) {
      if (!_.isString(key) && _.keys(key).length > 0) {
        // Special case for key being object.
        // object is an argument - use the setter behavior.
        _.each(key, function(v, k) {
          self._attr[k] = v;
          updateFunction(k, v);
        })
        return this;
      }
      // getter behavior.
      var output = this._attr[key];
      return output;
    }
    // setter behavior.
    u.assertString(key);
    this._attr[key] = value;
    updateFunction(key, value);
    return this;
  }
  return GetterSetter;
}

u.singleOpts = function(name) {
  // Creates getter / setter for a single variable.
  return function(variable) {
    if (arguments.length === 0) {
      return this.opts(name)
    }
    return this.opts(name, variable)
  }
}

// get all non-null attributes
u.getAttr = function() {
  var obj = {}
  _.each(this._attr, function(v, k) {
    if (!_.isNull(v) && !_.isUndefined(v) && v != -Infinity && v != Infinity) {
      obj[k] = v;
    }
  });
  return obj;
}

u.dataGetter = function(opts) {
  opts = opts || {};
  var onChange = opts.onChange;
  var data = function(data) {
    if (arguments.length === 0) {
      // getter behavior.
      return this._data;
    }
    // setter behavior.
    if (!data || data._cls_name != 'gg.data') {
      // convert the input to gg.data object.
      data = gg.data(data);
    }
    this._data = data;
    if (onChange) {
      onChange.apply(this);
    }
    return this;
  }
  return data;
};

u.doubleMap = function(square, iterator) {
  /** Runs map() over list of lists. */
  return _.map(square, function(line) {
    return _.map(line, iterator);
  });
}

u.tripleMap = function(cube, iterator) {
  return _.map(cube, function(square) {
    return _.map(square, function(line) {
      return _.map(line, iterator);
    });
  });
}

// create a comparator for comparing objects by multiple keys.
u.compareBy = function(keys) {
  var baseSort = function(a, b) { return (a == b) ? 0 : (a < b) ? -1 : 1; }
  var sortFunc = function(a, b) {
    var i, k, cmp
    for (i = 0; i < keys.length; i++) {
      k = keys[i]
      cmp = baseSort(a[k], b[k]);
      if (cmp !== 0) return cmp;
    }
    return 0;
  }
  return sortFunc;
}

// sort by multiple keys in an array of objs. wrapper for compareBy.
u.sortByMultiple = function(array, keys) {
  return array.sort(u.compareBy(keys));
}

var _empty = [];
u.concat = function(arrays) {
  // concat a list of arrays.
  return _empty.concat.apply(_empty, arrays);
}
u.pushall = function(array, other) {
  return _empty.push.apply(array, other);
}

// scale making function
u.add = function(f, g) {
  var fFunc = _.isFunction(f);
  var gFunc = _.isFunction(g);
  if (fFunc && gFunc) {
    return function(d) { return f(d) + g(d) }
  } else if (fFunc) {
    return function(d) { return f(d) + g }
  } else if (gFunc) {
    return function(d) { return f + g(d) }
  } else {
    return u.constfunc(f + g);
  }
}
u.sub = function(f, g) {
  var fFunc = _.isFunction(f);
  var gFunc = _.isFunction(g);
  if (fFunc && gFunc) {
    return function(d) { return f(d) - g(d) }
  } else if (fFunc) {
    return function(d) { return f(d) - g }
  } else if (gFunc) {
    return function(d) { return f - g(d) }
  } else {
    return u.constfunc(f - g);
  }
}

u.evaluate = function(attr, i) {
  if (_.isFunction(attr)) {
    return attr(i);
  }
  return attr;
}

u.unionType = function(array) {
  var x = _.uniq(_.reject(array, _.isNull));
  x.sort();
  if (x.length === 0) {
    return null;
  } else if (x.length === 1) {
    return x[0];
  }
  if (_.isEqual(x, ['date','number'])) {
    return 'date';
  }
  if (_.include(x, 'unknown')) {
    return 'unknown';
  }
  return 'category';
}

u.bool = function(x) {
  // normalize the input argument to boolean.
  return x ? true : false;
}

u.startswith = function(x, head) {
  // returns true if the string x starts with head.
  if (!(_.isString(head) && _.isString(x))) return false;

  var lh = head.length;
  var lx = x.length;

  if (lh > lx) return false;
  return x.slice(0, lh) === head;
}

u.instantiate = function(cls) {
  // utility method used in various setters.
  // if the input is class (from u.makeClass()), instantiate it. otherwise, do nothing.
  if (_.isString(cls)) {
    return gg[cls]();
  }
  if (cls && cls.prototype && cls.prototype._cls_name) {
    return cls()
  }
  return cls;
};

u.sum = function() {
  // sum the given input.
  var i;
  var result = 0;
  var len;
  if (_.isArray(this)) {
    // case where sum is called by
    // u.sum.apply(array)
    len = this.length;
    for (var i = 0; i < len; i++) {
      result += this[i];
    }
  }
  // handle the arguments.
  len = arguments.length;
  for (var i = 0; i < len; i++) {
    result += arguments[i];
  }
  return result;
}

u.mergeArrays = function(arrays, iterator) {
  // merge various [sorted] arrays.
  // TODO(jee, mar 8 2012) - very inefficient implementation - change later if needed.
  var isSorted = true;
  var col = u.concat(arrays);
  iterator = iterator ? iterator : u.identity;
  col = _.sortBy(col, iterator);
  return _.uniq(
      col,
      isSorted,
      iterator
  );
}

u.minimumDelta = function(array, iterator) {
  // given a ascending sorted array, find the minimum difference between the elements.
  if (array.length <= 1) return null;
  var len = array.length;
  var i;
  var cur;
  iterator = iterator ? iterator : function(x){return x};
  var past = iterator(array[0]);
  var delta = Infinity;
  for (i = 1; i < len; i++) {
    cur = iterator(array[i]);
    delta = Math.min(delta, cur - past);
    past = cur;
  }
  return delta;
}

u.isSuperset = function(bigger, smaller) {
  // assumes smaller and bigger are both.
  var j = 0;
  for (var i = 0; i < smaller.length; i++) {
    while (bigger[j] != smaller[i] && j < bigger.length) {
      j++;
    }
    if (j == bigger.length) {
      return false;
    }
  }
  return true;
}

// assertions: 
u.assertNumber = function(num) {
  if (!_.isNumber(num)) {
    gg.warn(13, "Expecting a number but got "+num+".");
  }
}

u.assertString = function(str) {
  if (!_.isString(str)) {
    gg.warn(14, "Expecting a string but got "+str+".");
  }
}

u.assertAes = function(aes) {
  if (!_.include(gg.opts.aes, u.getBaseAes(aes))) {
    gg.error(11, "Aesthetics " + aes + " does not exist.");
  }
}

u.assertQuery = function(query) {
  if (!(query === 'data' ||
    query === 'aes' ||
    query === 'aes_group' ||
    query === 'key')) {
    // TODO - correct error number.
    gg.error(-1, "Query type " + query + " is invalid.");
  }
}

// embedding
u.getBlank = function(indent) {
  return Array(indent+1).join(' '); // pretty bad implementation
}
u.qt = function(str) {
  return '"'+str+'"';
}
u.toCode = function(indent, fnIndent, o) {
  // === FIX THE INDENTS ===
  if (!indent) indent = 0;  // the number of spaces to indent on first line
  if (!_.isNumber(fnIndent)) fnIndent = indent + 2; // on subsequent lines
  // === FIX THE OPTION VARIABLES ===
  if (!o.cls) o.cls= []; // the params to be passed to the constructor
  if (!o.params) o.params = []; // the params to be passed to the constructor
  if (!o.funcs) o.funcs = [];   // array of [function-name, params]
  // === CONSTRUCTOR STATEMENT ===
  var str = u.getBlank(indent)+o.cls+'('+o.params.join(', ')+')';
  // === ADD ANY FUNCTION CALLS ===
  _.each(o.funcs, function(funcCall) {
    var funcname = funcCall[0];
    var params = funcCall[1] || [];
    if (!_.isArray(params)) params = [params];
    str += '\n'+u.getBlank(fnIndent)+'.'+funcname+'('+params.join(', ')+')';
  });

  // done!
  return str;
}
u.toCodeBasic = function(indent, fnIndent) {
  var obj = { 'cls' : this._cls_name };
  if (_.isFunction(this.getAttr)) {
    obj.funcs = [['opts', JSON.stringify(this.getAttr())]]
  }
  return u.toCode(indent, fnIndent, obj);
}

u.timer = function() {
  return {
    _time : new Date(),
    mark : function(name) {
      var oldTime = this._time;
      var newTime = this._time = new Date();
      if (name) {
        var diff = newTime - oldTime;
        // gg.info(diff + " ms - " + name)
      }
    }
  }
}

u.getRandomColor = function() {
  function c() {
    return Math.floor(Math.random()*256).toString(16)
  }
  return "#"+c()+c()+c();
}

})(gg, u);
;
u.isDerivedAes = function(aes) {
  // aes is String, so .indexOf() exists in all browsers.
  return aes.indexOf('_') > -1;
}

u.getBaseAes = function(aes) {
  var splitted = aes.split('_', 1);
  var base = splitted[0];
  return base;
}
;;(function(u) {
"use strict";

// http://stackoverflow.com/questions/384286/javascript-isdom-how-do-you-check-if-a-javascript-object-is-a-dom-object
u.isNode = function(o) {
  return (
    typeof window.Node === "object" ? o instanceof window.Node :
    o && typeof o === "object" && typeof o.nodeType === "number" && typeof o.nodeName==="string"
  );
}

//Returns true if it is a DOM element
u.isElement = function(o) {
  return (
    typeof window.HTMLElement === "object" ? o instanceof window.HTMLElement : //DOM2
    o && typeof o === "object" && o.nodeType === 1 && typeof o.nodeName==="string"
  );
}

u.isURL = function(s) {
  // from http://stackoverflow.com/questions/5212424/form-validation-problem-code-doesnt-work
  var regex = /(http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;
  return _.isString(s) && regex.test(s);
}

})(u)
;/**
 * Date: 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * jQuery related functions
 **/

var gg = gg || {};
var u = u || {};

;(function(gg, u) {
  u.jQuery = function() {
    if (!jQuery) {
      gg.error(4, "jQuery is required, but is not found.")
    }
    return jQuery;
  }
})(gg, u);
;/**
 * Date: 3/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Implements data observer.
 **/
(function(u) {
"use strict";

u.Observer = function() {
  // Create a new observer where we can register / deregister events.
  this.callbacks = [];
}

u.Observer.prototype.register = function(key, callback, name) {
  this.callbacks.push({
    key: key,
    callback: callback,
    name: name
  });
}

u.Observer.prototype.remove = function(callback) {
  this.callbacks = _.reject(this.callbacks, function(obj) {
    return obj.callback === callback
  });
}

u.Observer.prototype.removeNamed = function(name) {
  this.callbacks = _.reject(this.callbacks, function(obj) {
    return obj.name === name;
  });
}

u.Observer.prototype.removeKey = function(key) {
  this.callbacks = _.reject(this.callbacks, function(obj) {
    return obj.key === key;
  });
}

u.Observer.prototype.trigger = function(key, value) {
  _.chain(this.callback)
   .filter(function(obj) { return obj.key === key; })
   .each(function(obj) { obj.callback(value); });
}

})(u);
;// Extensions on top of Raphael.js, to provide better rendering primitives.
// methods of the form gg_X can be used by both polar and cartesian coordinates.
// methods of the form gg_[polar|cart]_X canbe used only by the corresponding coordinates system.
;(function() {
"use strict";

var ggTooltip = function(scales) {
  // this = raphael element
  if (scales.tooltip) {
    var tooltip = scales.tooltip;
    u.addTooltip(this, tooltip);
  }
  return this; // for chaining.
};

var ggDoubleClick = function(handler, layer) {
  // this = raphael element
  if (handler) {
    var handlerWrapper = function() {
      var data = this.attr('data');
      handler.call(this, data, layer);
    }
    this.dblclick(handlerWrapper);
  }
  return this;
}

var _gg_decorate = function(element) {
  // add polychart specific methods.
  element.ggTooltip = ggTooltip;
  element.ggDoubleClick = ggDoubleClick;
};

Raphael.fn.gg_point = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.circle().attr('postProcess', function(attr) {
    var cx = attr.cx, cy = attr.cy;
    attr.cx = ox + coord.transX(cx, cy);
    attr.cy = oy + coord.transY(cx, cy);
    return attr;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

Raphael.fn.gg_symbol = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.path().attr('postProcess', function(attr) {
    var cx = attr.cx;
    var cy = attr.cy;
    var x = ox + coord.transX(cx, cy);
    var y = oy + coord.transY(cx, cy);
    var r = attr.r;
    var symbol = attr.symbol;
    attr.path = gg.symbol.makePath(symbol, x, y, r);
    delete attr.cx; delete attr.cy; delete attr.symbol; delete attr.r;
    return attr;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
}

Raphael.fn.gg_text = function(coord) {
  TOTAL_COUNT++;
  // has both polar and non-polar implementation.
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.text().attr('postProcess', function(attr) {
    var x = attr.x, y = attr.y;
    attr.x = ox + coord.transX(x, y);
    attr.y = oy + coord.transY(x, y);
    if (!attr.text) {
      attr.text = ' '; // for VML
    }
    return attr;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

Raphael.fn.gg_cart_line = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.path().attr('postProcess', function(attr) {
    // translate (x1,x2,y1,y2) model to points.
    var x1, x2, y1, y2;
    y1 = oy + coord.transY(attr.x1, attr.y1);
    y2 = oy + coord.transY(attr.x2, attr.y2);
    x1 = ox + coord.transX(attr.x1, attr.y1);
    x2 = ox + coord.transX(attr.x2, attr.y2);
    delete attr.x1; delete attr.x2;
    delete attr.y1; delete attr.y2;
    attr.path = [['M', x1, y1], ['L', x2, y2]];
    return attr;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

Raphael.fn.gg_cart_rect = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.rect().attr('postProcess', function(attr) {
    var x1, x2, y1, y2; // input
    var x, y, width, height; // output
    x1 = coord.transX(attr.x1, attr.y1);
    x2 = coord.transX(attr.x2, attr.y2);
    y1 = coord.transY(attr.x1, attr.y1);
    y2 = coord.transY(attr.x2, attr.y2);
    x = Math.min(x1, x2); width = Math.abs(x2-x1);
    y = Math.min(y1, y2); height = Math.abs(y2-y1);
    delete attr.x1; delete attr.x2;
    delete attr.y1; delete attr.y2;
    attr.x = ox + x;
    attr.y = oy + y;
    attr.width = width; attr.height = height;
    return attr;
  });

  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

var d3_svg_arcOffset = -Math.PI / 2,
    d3_svg_arcMax = 2 * Math.PI - 1e-6;
var d3_arc = function(flip, ox, oy, x1, x2, y1, y2) {
  return function(data) {
    var r0, r1, a0, a1;
    if (!flip) {
      r0 = x1(data);
      r1 = x2(data);
      a0 = y1(data) + d3_svg_arcOffset;
      a1 = y2(data) + d3_svg_arcOffset;
    } else {
      r0 = y1(data);
      r1 = y2(data);
      a0 = x1(data) + d3_svg_arcOffset;
      a1 = x2(data) + d3_svg_arcOffset;
    }
    return u.d3_arc(ox, oy, r0, r1, a0, a1)
  }
};

u.d3_arc = function(ox, oy, r0, r1, a0, a1) {
  // expose the arc calculation function.
  if (r1 < r0) {
    // swap r0 and r1.
    var _tmp = r0;
    r0 = r1;
    r1 = _tmp;
  }
  var da = (a1 < a0 && (da = a0, a0 = a1, a1 = da), a1 - a0),
      df = da < Math.PI ? 0 : 1,
      c0 = Math.cos(a0),
      s0 = Math.sin(a0),
      c1 = Math.cos(a1),
      s1 = Math.sin(a1);
  // copied from d3.
  // console.log(r0, r1, a0, a1);
  if (da >= d3_svg_arcMax) {
    // Arc is full circle - donut.
    if (r0) {
      return [
        ['M', ox, oy + r1],
        ['A', r1, r1, 0, 1, 1, ox, oy - r1],
        ['A', r1, r1, 0, 1, 1, ox, oy + r1],
        ['M', ox, oy + r0],
        ['A', r0, r0, 0, 1, 0, ox, oy - r0],
        ['A', r0, r0, 0, 1, 0, ox, oy + r0],
        ['Z']
      ]
    } else if (r1) {
      return [
        ['M', ox, oy + r1],
        ['A', r1, r1, 0, 1, 1, ox, oy - r1],
        ['A', r1, r1, 0, 1, 1, ox, oy + r1],
        ['Z']
      ]
    } else {
      // both r0 and r1 are not present - do not render.
      return ''
    }
  } else {
    // Arc is not full circle.
    if (r0) {
      if (a0 == a1) {
        // straight line.
        return [
          ['M', r1 * c0 + ox, r1 * s0 + oy],
          ['L', r0 * c1 + ox, r0 * s1 + oy]
        ];
      } else {
        return [
          ['M', r1 * c0 + ox, r1 * s0 + oy],
          ["A", r1, r1, 0, df, 1, (r1 * c1 + ox), (r1 * s1 + oy)],
          ['L', r0 * c1 + ox, r0 * s1 + oy],
          ['A', r0, r0, 0, df, 0, (r0 * c0 + ox), (r0 * s0 + oy)],
          ['Z']
        ];
      }
    } else if (r1) {
      if (a0 == a1) {
        // straight line.
        return [
          ['M', r1 * c0 + ox, r1 * s0 + oy],
          ['L', r0 * c1 + ox, r0 * s1 + oy]
        ];
      } else {
        return [
          ['M', r1 * c0 + ox, r1 * s0 + oy],
          ['A', r1, r1, 0, df, 1, r1 * c1 + ox, r1 * s1 + oy],
          ['L', ox, oy],
          ['Z']
        ];
      }
    } else {
      return '';
    }
  }
}
Raphael.fn.gg_polar_rect = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var flip = coord._flip;
  var elem = this.path().attr('preProcess', function(func) {
    var x1, x2, y1, y2;
    x1 = func.x1; x2 = func.x2;
    y1 = func.y1; y2 = func.y2;
    // WHY IS THIS CODE HERE?
    delete func.x1; delete func.x2;
    delete func.y1; delete func.y2;
    func.path = d3_arc(flip, ox, oy, x1, x2, y1, y2);
    return func;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
}

Raphael.fn.gg_cart_vline = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.path().attr('postProcess', function(attr) {
    var x1, x2, y1, y2;
    y1 = oy + coord.transY(attr.x, attr.y1);
    y2 = oy + coord.transY(attr.x, attr.y2);
    x1 = ox + coord.transX(attr.x, attr.y1);
    x2 = ox + coord.transX(attr.x, attr.y2);
    attr.path = [['M', x1, y1], ['L', x2, y2]];
    delete attr.x;
    delete attr.y1;
    delete attr.y2;
    return attr;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

Raphael.fn.gg_polar_vline = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var flip = coord._flip;
  var elem = this.path().attr('preProcess', function(func) {
    var x1, x2, y1, y2;
    x1 = x2 = func.x;
    y1 = func.y1; y2 = func.y2;
    delete func.x;
    delete func.y1; delete func.y2;
    func.path = d3_arc(flip, ox, oy, x1, x2, y1, y2);
    return func;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

Raphael.fn.gg_cart_hline = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var elem = this.path().attr('postProcess', function(attr) {
    var x1, x2, y1, y2;
    y1 = oy + coord.transY(attr.x1, attr.y);
    y2 = oy + coord.transY(attr.x2, attr.y);
    x1 = ox + coord.transX(attr.x1, attr.y);
    x2 = ox + coord.transX(attr.x2, attr.y);
    attr.path = [['M', x1, y1], ['L', x2, y2]];
    delete attr.x1;
    delete attr.x2;
    delete attr.y;
    return attr;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

Raphael.fn.gg_polar_hline = function(coord) {
  TOTAL_COUNT++;
  var ox = coord._offsetX, oy = coord._offsetY;
  var flip = coord._flip;
  var elem = this.path().attr('preProcess', function(func) {
    var x1, x2, y1, y2;
    x1 = func.x1; x2 = func.x2;
    y1 = y2 = func.y;
    delete func.x1; delete func.x2;
    delete func.y;
    func.path = d3_arc(flip, ox, oy, x1, x2, y1, y2);
    return func;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
}

u._path_function = function(coord, x, y, pointModifier, smoother, sort, data) {
  // used inside fn.gg_path, but pulled out for unit testing.
  // data - gg.data
  // x, y - extracts x, y data from the given record of data.
  // Optional parameters
  // pointModifier - modifies the array of (x, y) pairs afterwards.
  // sort - true if data should be sorted by x.
  var ox = coord._offsetX, oy = coord._offsetY;
  var raw = data.getObjects();
  if (sort) { raw = _.sortBy(raw, sort) }
  var thetaVals = _.map(raw, x);
  var rVals = _.map(raw, y);
  if (pointModifier) { pointModifier(thetaVals, rVals); }
  if (smoother) { 
    var _tmp = smoother(thetaVals, rVals);
    thetaVals = _tmp.x;
    rVals = _tmp.y;
  }

  // construct the line array.
  var pathArray = [];
  var first = true; // first SVG path command should be M, then L.
  var length = thetaVals.length;
  for (var i = 0 ; i < length; i++) {
    var rawT = thetaVals[i];
    var rawR = rVals[i];
    // check for number.
    if (!(_.isNumber(rawT) && _.isNumber(rawR)) ||
        (_.isNaN(rawT) || _.isNaN(rawR))) { continue }
    var t = coord.transX(rawT, rawR);
    var r = coord.transY(rawT, rawR);
    // check for number.
    if (!(_.isNumber(t) && _.isNumber(r))) { continue }
    if (first) {
      pathArray.push(['M', t + ox, r + oy]);
      first = false ;
    } else {
      pathArray.push(['L', t + ox, r + oy]);
    }
  }
  return pathArray;
};


u._ensureFunction = function(func) {
  // make the function array to contain only functions.
  for (var key in func) {
    var value = func[key];
    if (typeof value !== 'function') {
      func[key] = u.constfunc(value);
    }
  }
};

Raphael.fn.gg_path = function(coord, smoother) {
  TOTAL_COUNT++;
  var elem = this.path().attr('preProcess', function(func) {
    var sort = func._sort; delete func._sort;
    var x = func.x; delete func.x;
    var y = func.y; delete func.y;
    var pointModifier = func._pointModifier; delete func._pointModifier;
    func.path = _.bind(u._path_function, null, coord, x, y, pointModifier, smoother, sort);
    return func;
  });
  elem = u.addMouseover(coord, elem);
  _gg_decorate(elem);
  return elem;
};

u.configRaphaelAttributes = function(paper) {
  // data binding related function.
  //
  // func - object of data binding functions.
  // preProcess - pre process object of data binding functions.
  // postProcess - post process attributes that are generated.
  // data - data passed to the data binding functions.
  var applyFunction = function(data, func) {
    var preProcess = this.attr('preProcess');
    var postProcess = this.attr('postProcess');
    if (!data || !func) return {};
    if (func._style) {
      // '_style' is an extra parameter, that allows
      // convenient setting of styles.
      func = _.clone(func);
      var style = func._style;
      func.stroke = style.stroke
      func.fill = style.color;
      func['stroke-width'] = style.strokewidth;
      func['fill-opacity'] = style.opacity;
      delete func._style;
    };

    u._ensureFunction(func);
    if (preProcess) { func = preProcess(_.clone(func)) }

    var result = {};
    // apply the scales.
    for (var key in func) {
      var scale = func[key];
      result[key] = scale(data);
    }
    return postProcess ? postProcess(result) : result;
  };

  paper.ca.func = function(func) {
    return applyFunction.call(this, this.attr('data'), func);
  };

  paper.ca.data = function(data) {
    return applyFunction.call(this, data, this.attr('func'));
  };

  // just define some custom attributes.
  paper.ca.postProcess = function(value) {};
  paper.ca.preProcess = function(value) {};
}

u.Raphael = Raphael;

u.addMouseover = function(coord, element) {
  if (!coord.opts('mouseover_highlight')) {
    return element;
  }
  // add the mouseover_highlight behavior to the given Raphael element.
  var OLD_FILL = '_old_fill', OLD_STROKE = '_old_stroke';
  element.mouseover(function(event) {
    // var self = d3.select(this);
    var fill = element.attr('fill');
    var stroke = element.attr('stroke');
    if (fill != 'none') {
      element.data(OLD_FILL, fill);
      element.attr('fill', d3.rgb(fill).darker().toString());
    } else if (element.attr('stroke-width') > 0) {
      element.data(OLD_STROKE, stroke);
      element.attr('stroke', d3.rgb(stroke).darker().toString());
    }
    element.attr('cursor', 'hand');
  });
  element.mouseout(function(event) {
    var fill = element.attr('fill')
    if (element.attr('fill') != "none") {
      element.attr('fill', element.data(OLD_FILL));
    } else if (element.attr('stroke-width') > 0) {
      element.attr('stroke', element.data(OLD_STROKE));
    }
    element.attr('cursor', 'normal');
  });
  return element
};

var _target = function(event) {
  // extract the target of the given DOM event.
  // srcElement is only available in chrome.
  return (event.originalTarget || event.srcElement)
}

var _addTooltip_mouseover = function(event) {
  // this - context passed from u.addTooltip
  var tooltipFn = this.tooltipFn;
  var element = this.element;
  var title = tooltipFn(element.attr('data'));
  if (!title) { return };
  $(_target(event)).tooltip({
    title: title,
    helper: $('#polychart-helper'),
    // helper: $('body'),
    trigger: 'manual',
    placement: 'left'
  }).tooltip('show');
};
var _addTooltip_mouseout = function(event) {
  $(_target(event)).tooltip('hide');
};

u.addTooltip = function(element, tooltipFn) {
  if (tooltipFn) {
    var ctx = {tooltipFn:tooltipFn, element:element};
    element.hover(_addTooltip_mouseover, _addTooltip_mouseout, ctx, ctx);
  }
  return element;
}

u.unbindAll = function(element) {
  // prepare the raphael object for destruction.
  if (element.events) {
    var events = element.events;
    for (var i = 0; i < events.length; i++) {
      var event = events[i];
      event.unbind();
    }
  }

  // free all the data.
  element.removeData();

  // free all the member object.
  for (var key in element) {
    delete element[key]
  }
}

function initPolychartDom() {
  // create <div> with id #polychart-dnd.
  dom = $('#polychart-helper')
  if (dom.length == 0) {
    helper = $("<div id='polychart-helper' class='polychart-ui bootstrap'></div>")
    $('body').prepend(helper)
  }
}

var TOTAL_COUNT = 0;
var LAST_COUNT = 0;
u.raphael_mark = function(name) {
  var diff = TOTAL_COUNT - LAST_COUNT;
  LAST_COUNT = TOTAL_COUNT;
  if (name) {
    // gg.info(diff + " obj - " + name)
  }
}

})();
;;(function(gg) {
"use strict";

var GGError = function(code, msg) {
  this.code = code;
  this.msg = msg;
  this.toString = function() {
    return 'Error Code #' + code + ': ' + msg;
  };
  /*
  // add the stack trace - chrome only.
  if (console && console.trace) { this.stack = console.trace() }
  */
};

gg.error = function(code, msg) {
  throw new GGError(code, msg);
}

gg.warn = function(code, msg) {
  if (console) {
    console.log(new GGError(code, msg));
  }
}
gg.info = function(msg) {
  if (console) {
    console.log(msg);
  }
}

})(gg);
;;(function(gg) {
"use strict";

gg.opts = {}; // NOT A CLASS!

gg.opts.pivot = {
  // default width and height
  'width' : 300,
  'height' : 300,
  'stat' : 'sum',
  'columnFormatter' : null,
  'rowFormatter': null,
  'title' : null,
  'title-column' : null,
  'title-row' :  null,
  'title-all': 'all'
}

gg.opts.graph = {
  // default width and height
  'width' : 300,
  'height' : 300,
  'padding-left': null,
  'padding-right': null,
  'padding-top': null,
  'padding-bottom': null,
  // --- legends
  'legend-position': 'right', // right now only supports RIGHT and NONE
  'legend-width': 60,
  'legend-height' : 30,
  // --- spacing between facets.
  'spacing-x': 20,
  'spacing-y': 40,
  'facet-x' : 20,
  // --- labels
  'title' : '',
  'title-size' : 15,
  'title-bold' : true,
  //'label-x': '',
  //'label-y': '',
  'label-size' : 12,
  'label-bold' : false,
  // --- axis
  'axis-y' : 'left', // TOP or BOTTOM or NONE.
  'axis-y-line' : null,
  'axis-y-label' : null,
  'axis-y-ticks' : null,
  'axis-y-ticklength' : null,
  'axis-y-color' : null,
  'axis-y-strokewidth' : null,
  'axis-y-' : null,
  'axis-x' : 'bottom', // LEFT or RIGHT or NONE.
  'axis-x-line' : null,
  'axis-x-label' : null,
  'axis-x-ticks' : null,
  'axis-x-ticklength' : null,
  'axis-x-color' : null,
  'axis-x-strokewidth' : null,
  // --- grid
  'grid-render-vertical' : null,
  'grid-render-horizontal' : null,
  'grid-stroke' : null,
  'grid-strokewidth' : null,
  'grid-dasharray' : null,
  // -- branding.
  'branding' : true,
  // --- div
  'dom': null,
  // data filtering
  'filter': null,

  // rendering related.
  'render-make-default-scale' : true,
  // call compute() automatically in render().
  'render-compute' : true,
  'render-impute-mapping' : true,

  // -- mouseover supports.
  'tooltip' : null,

  // -- callback supports.
  'callback-warn' : null
};

gg.opts.aes = [
  'color',
  'fill',
  'font',
  'fontsize',
  'group',
  'opacity',
  'radius',
  'size',
  'stats', // not really an aesthetics, but used for group_stats.
  'stroke',
  'strokewidth',
  'symbol',
  'text',
  'tooltip',
  'x',
  'y'
];

gg.opts.aes.sort(); // sort the input

gg.opts.mainFill = 'steelblue';
gg.opts.mainColor = 'black';

gg.opts.layer = {
  'x' : '',
  'y' : 1,
  'color' : gg.opts.mainFill,
  'opacity' : 0.9,
  'stroke': "#FFFFFF",
  'strokewidth': 0,
  'facet' : true,
  'radius' : 3,
  // renders graph or not.
  'visible' : true,
  // maximum # of artifacts to render per layer.
  'render-max' : 400
};

gg.opts.point= {
  'stroke' : gg.opts.mainColor,
  'strokewidth' : 1,
  'radius' : 6,
  'padding' : 0
}

gg.opts.box = {
  'stroke' : gg.opts.mainColor,
  'strokewidth' : 1,
  'padding' : 0.1,
  'width' : 1,
  'align' : 'center'
}

gg.opts.bar = {
  'stroke' : gg.opts.mainColor,
  'strokewidth' : 1,
  'width' : 1,
  'align' : 'center'
}

gg.opts.line = {
  'color' : gg.opts.mainColor,
  'strokewidth' : 2,
  'padding' : 0.5,
  'radius' : 6 
}

gg.opts.text = {
  'opacity' : 1,
  'color' : '#000000',
  'font' : 'Verdana',
  'text' : 'text label'
}

gg.opts.gradient = {
  'low' : '#cccccc',
  'high' : 'steelblue'
}

gg.opts.grid = {
  //'dasharray' : '1,3', // dotted
  //'dasharray' : '4,5', // dashed
  //'dasharray' : '0', // solid
  // 'dasharray' : '.', // Raphael.js - dotted.
  'dasharray' : '- ', // Raphael.js - dash
  'dashoffset' : 5,
  'stroke' : '#CCC',
  'strokewidth' : 1,
  'render-vertical' : false,
  'render-horizontal' : true
}

gg.opts.axis = {
  'color' : '#000',
  'fontsize' : 11,
  'labels' : true,
  'strokewidth' : 1,
  'ticklength-x' : 3,
  'ticklength-y' : 7,
  'ticks' : true
}

gg.opts.axis_x = {
  'line' : true
}

gg.opts.axis_y = {
  'line' : false
}

gg.opts.coord = {
  mouseover_highlight: true
}

gg.opts.epsilon = Math.pow(10, -7);

gg.opts.theme_bw = function() {

}



})(gg);
;/**
 * Date : 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";

gg.graph = u.makeClass('gg.graph');

gg.graph.prototype.init = function(data) {
  // TODO - user should be able to provide their own div, in form of
  // - selector
  // - jQuery element
  // - d3 element
  // - DOM
  this._data = null;
  this._paper = null; // Raphael paper.
  this._filteredData = null;

  this._layers = [];     // to put layers in
  this._scales = {};
  this._coord = null;
  this._facet = null;
  // default attributes
  this._attr = u.cloneobj(gg.opts.graph);
  // legend
  this._legend = {}
  // cached dom elements.
  this._doms = {};
  // cached _calculateDims.
  this._dimCache = null;
  // true if this was ever rendered.
  this._rendered = false;

  if (data) this.data(data);
};

////////////////////////////////////////////////////////////////////////////////
// Getters and setteres.
////////////////////////////////////////////////////////////////////////////////
var onDataChange = function() {
  this._filterData();
}

gg.graph.prototype.data = u.dataGetter({onChange:onDataChange});

gg.graph.prototype.getFilteredData = function() {
  return this._filteredData;
}

gg.graph.prototype.getAttr = function() {
  var obj = {}
  _.each(this._attr, function(v, k) {
    if (_.isNull(v) ||
      _.isUndefined(v) ||
      v === -Infinity ||
      v === Infinity ||
      _.isFunction(v)) {
      return;
    }
    if (u.isNode(v)) {
      var id = v.getAttribute('id');
      // returns null on many browser, "" on IE.
      if (id !== null && id !== '') {
        obj[k] = id;
      }
      return;
    }
    obj[k] = v;
  });
  return obj;
}

gg.graph.prototype._varlabel = function(aes) {
  // user defined
  var userdefined = this.opts("label-"+aes);
  if (!u.undef(userdefined)) {
    return userdefined;
  }
  // get the name of the variable mapped to this aesthetic
  var varnames = _.chain(this._layers)
           .map(function(l) { return l.map(aes); })
           .filter(u.identity)
           .value();
  if (varnames.length > 0) {
    return varnames[0];
  }
  // if it doesn't exist, return an empty string
  return '';
}

gg.graph.prototype.getLayer = function(idx) {
  return this._layers[idx];
}

gg.graph.prototype.getLayerIndex = function(layer) {
  for (var i = 0 ; i < this._layers.length; i++) {
    if (layer == this._layers[i]) {
      return i;
    }
  }
  return -1;
}

gg.graph.prototype.removeLayer = function(layer) {
  var len = this._layers.length;
  // remove the given layer.
  this._layers = _.without(this._layers, layer);
  // is the layers modified?
  return len !== this._layers.length;
}

gg.graph.prototype.addLayer = function(layer, index) {
  layer = u.instantiate(layer);
  if (!layer) {
    gg.error(201, "Attempting to add an undefined or malformed layer: "+layer)
  }
  var cloned = u.cloneobj(layer);
  cloned.attach(this);

  if (index === null) {
    this._layers.push(cloned);
  } else {
    this._layers.splice(index, 0, cloned);
  }
  return this;
}

gg.graph.prototype.numLayers = function() {
  return this._layers.length;
}

gg.graph.prototype.getMapKeys = function() {
  return _.chain(this._layers)
   .map(function(l) { return _.keys(l.getMap()) })
   .flatten().uniq().value();
}

gg.graph.prototype.isMapped = function(aes, includeDerived) {
  if (!includeDerived) {
    return _.any(_.invoke(this._layers, 'map', aes));
  } else {
    aes = u.getBaseAes(aes);
    return _.any(this._layers, function(layer) {
      return _.any(_.keys(layer.getMap()), function(value) {
        return u.getBaseAes(value) === aes;
      });
    });
  }
}

gg.graph.prototype.defaultMin = function(aes, provided) {
  if (this._layers.length === 0) return null;
  var result = _.chain(this._layers).invoke('defaultMin', aes, provided).filter(_.isNumber).min().value();
  if (result != Infinity) return result
  return null;
}

gg.graph.prototype.defaultMax = function(aes, provided) {
  if (this._layers.length === 0) return null;
  var result = _.chain(this._layers).invoke('defaultMax', aes, provided).filter(_.isNumber).max().value();
  if (result != -Infinity) return result
  return null;
}

gg.graph.prototype.opts = u.opts();

gg.graph.prototype.warn = function(code, msg) {
  // this can be overridden for new error messages.
  var callback = this.opts('callback-warn');
  if (!callback) {
    // default fallback.
    gg.warn(code, msg);
  } else {
    callback({code:code, message:msg});
  }
}

gg.graph.prototype._optsUpdate = function(key, val) {
  if (this._rendered) {
    // bit of hack to re-render labels without re-rendering the entire graph.
    if (key == 'title') {
      this._update_label('_debug_title', val);
    } else if (key == 'label-x') {
      this._update_label('_debug_x_label', val);
    } else if (key == 'label-y') {
      this._update_label('_debug_y_label', val);
    }
  }
  if (key === 'dom') {
    this._clearCache();
  }
  this._clearDimCache();
}

gg.graph.prototype.layer = function(layer) {
  return this.addLayer(layer, null);
};

gg.graph.prototype.coord = function(coord) {
  /**
   * Assigns the coordinate for the graph.
   * either pass in an instance of gg.coord.* or
   * a string.
   */
  if (arguments.length === 0) {
    // getter.
    return this._coord;
  }
  coord = u.instantiate(coord);
  var cloned = null;
  cloned = u.cloneobj(coord);
  cloned.attach(this);
  this._coord = cloned;
  return this;
};

gg.graph.prototype.facet = function(facet) {
  if (arguments.length === 0) {
    return this._facet;
  }
  if (facet === null) {
    this._facet = null;
  }
  else {
    facet = u.instantiate(facet);
    if (!facet) {
      gg.error(201, "Attempting to add an undefined or malformed facet: "+facet)
    }

    var cloned = u.cloneobj(facet);
    cloned.attach(this);
    this._facet = cloned;
  }
  this._clearCanvas();
  return this;
}


gg.graph.prototype._update_label = function(cssclass, text) {
  var element = this._doms[cssclass];
  if (element) {
    element.attr('text', text);
  }
}

gg.graph.prototype.dimensions = function(flush) {
  // wrapper around _calculateDims().
  if (!this._dimCache || flush === true) {
    this._dimCache = this._calculateDims();
  }
  return this._dimCache;
}

gg.graph.prototype._calculateDims = function() {
  /** 
   * Internal method for render().
   * Calculate the required dimensions.
   * This method should NOT be called directly, but dimensions() should be used.
   */

  // facet
  var ncol = this._facet ? this._facet.ncol() : 1;
  var nrow = this._facet ? this._facet.nrow() : 1;
  var hasFacet = nrow*ncol > 1;

  // calculate paddings
  var pLeftDefault = 50,
      pRightDefault = 50,
      pTopDefault = 20,
      pBottomDefault = 50,
      axisWidth = 0,
      legendWidth = 0,
      legendHeight = 0;

  var pTop =   this.opts('padding-top')    == null ? pTopDefault :    this.opts('padding-top'),
      pLeft =  this.opts('padding-left')   == null ? pLeftDefault :   this.opts('padding-left'),
      pRight = this.opts('padding-right')  == null ? pRightDefault :  this.opts('padding-right'),
      pBottom= this.opts('padding-bottom') == null ? pBottomDefault : this.opts('padding-bottom');
  if (this._legend && this._legend._aes) {
    legendWidth = this._legend.width();
    legendHeight = this._legend.height();
  }
  if (this._axes && this._axes.y) {
    axisWidth = this._axes.y.width()
  }

  var yAxisPos = this.opts('axis-y'),
      xAxisPos = this.opts('axis-x'),
      legendPos = this.opts('legend-position');

  pTop = Math.max(
           pTop,
           30+(xAxisPos=="top")*25 - hasFacet*this.opts('spacing-x')
         );
  pBottom = Math.max(
              pBottom,
              30+(xAxisPos=="bottom")*20+legendHeight
            );
  pLeft = Math.max(
            Math.min(
              30+(yAxisPos=='left')*axisWidth+(legendPos=="left")*legendWidth,
              this.opts('width') * 0.25
            ), pLeft
          );
  pRight = Math.max(
            Math.min(
              15+(yAxisPos=='right')*axisWidth+(legendPos=='right')*legendWidth,
              this.opts('width')*0.25
            ), pRight
          );

  // calculate chart width/height
  var chartWidth  = (this.opts('width') - pLeft - pRight);
  var chartHeight = (this.opts('height') - pTop - pBottom);
  u.assertNumber(chartWidth)
  u.assertNumber(chartHeight)

  var spacingX = hasFacet ? this.opts('spacing-x') : 0;
  var spacingY = hasFacet ? this.opts('spacing-y') : 0;

  // calculate xlab and ylab position
  var xLabelY, yLabelX;
  if (xAxisPos=='bottom') {
    xLabelY = pTop + chartHeight + 30;  
  } else {
    xLabelY = 30;
  }

  if (yAxisPos=='left') {
    yLabelX = 15
  } else {
    yLabelX = pLeft + chartWidth + pRight - 5
  }

  var result = {
    ncol : ncol,
    nrow : nrow,
    paddingLeft : pLeft,
    paddingRight : pRight,
    paddingTop : pTop,
    paddingBottom : pBottom,
    chartWidth  : chartWidth,
    chartHeight : chartHeight,
    eachWidth   : (chartWidth - (ncol - 1) * spacingX) / ncol,
    eachHeight  : ((chartHeight - nrow * spacingY) / nrow),
    spacingX    : spacingX,
    spacingY    : spacingY,
    xLabelY : xLabelY,
    yLabelX : yLabelX,
    additionalScales: !!this._legend && !!this._legend._aes
  };
  return result;
}

gg.graph.prototype.getAxisOffset = function(row, col, position) {
  var dims = this.dimensions();
  var xpos = this.xposition(col);
  var ypos = this.yposition(row);
  var width = dims.eachWidth;
  var height = dims.eachHeight;
  var isPolar = (this.coord()._cls_name === 'gg.coord.polar');
  var flip = (this.coord()._flip !== isPolar);
  var y = flip ? 'x' : 'y';
  if (position == 'right') {
    xpos += width;
  } else if (position == 'bottom') {
    ypos += height;
  } else if (position == 'center') { // for polar coord
    xpos += width/2;
    ypos += height/2;
  } else if (position == 'left' && isPolar) {
    xpos -= 9; // shift axis by left a little for polar coord
    ypos += height/2 - this._scales[y].range()[1]
  }
  return {
    x: xpos - 0.5,
    y: ypos - 0.5
  };
}

gg.graph.prototype.createOffsetCoord = function(x, y) {
  var coord = new gg.coord.cart();
  coord.attach(this);
  coord.opts('mouseover_highlight', false);
  return coord.differentOffset(x, y);
}

gg.graph.prototype.makeplot = function(dom) { 
  // TODO - assert for DOM.
  var width = this.opts('width');
  var height = this.opts('height');
  var paper;
  var element;

  if (!dom) {
    gg.error(212, "Invalid dom for .opts('dom') - " + dom)
  } else if (_.isString(dom)) {
    // truncate the first character.
    var id = (dom.charAt(0) == '#') ? dom.substring(1) : dom;
    element = document.getElementById(id);
    if (!element) {
      gg.error(212, "Invalid dom for .opts('dom') - " + dom)
    }
  } else {
    element = dom;
  }
  paper = u.Raphael(element, width, height);
  u.configRaphaelAttributes(paper);

  return paper;
}

gg.graph.prototype.setDefaultCoord = function() {
  // base coordinate system is cartesian.
  if(!this._coord){
    this.coord(gg.coord.cart());
  };
  return this;
}

////////////////////////////////////////////////////////////////////////////////
// Data filtering functions.
////////////////////////////////////////////////////////////////////////////////
gg.graph.prototype.filter = function(filter) {
  // set / get the filter
  if (arguments.length === 0) {
    return this.opts('filter')
  }
  this.opts('filter', filter);
  this._filterData();
  return this;
}

gg.graph.prototype._filterData = function() {
  if (this.opts('filter')) {
    this._filteredData = this.data().filter(this.opts('filter'));
  } else {
    this._filteredData = this.data();
  }
}

////////////////////////////////////////////////////////////////////////////////
// Rendering-related functions
////////////////////////////////////////////////////////////////////////////////
var _clearPaper = function(paper) {
  // clear the raphael paper.
  // this should be called whenever we lose reference to raphael paper object
  // to ensure memory is being cleared correctly.
  if (paper) {
    // unbind all the event handlers.
    paper.forEach(function(el) {
      u.unbindAll(el);
    });
    paper.clear();
  }
}
gg.graph.prototype._clearCache = function() {
  _clearPaper(this._paper);
  this._paper = null;
  this._doms = {};
  this._dimCache = null;
  this._rendered = false;
}

gg.graph.prototype._clearCanvas = function() {
  _clearPaper(this._paper);
  this._doms = {};
  this._dimCache = null;
  this._rendered = false;
}

gg.graph.prototype._clearDimCache = function() {
  this._dimCache = null;
}

gg.graph.prototype._preRender = function(dom) {
  // Log how much time has elapsed for time.
  this._debugStartTime = new Date();
  if (dom) {
    this.opts('dom', dom);
  }
  if (!this._paper) {
    this._paper = this.makeplot(this.opts('dom'));
  } else {
    var width = this.opts('width');
    var height = this.opts('height');
    this._paper.setSize(width, height);
    this._clearCanvas();
  }
}

gg.graph.prototype._postRender = function() {
  var endTime = new Date();
  var diff = endTime - this._debugStartTime;
  this._rendered = true;
  gg.info("render() took " + diff + " ms.");
  this._renderingTime = diff;
}

// functions to obtain the translation for a given facet.
gg.graph.prototype.xposition = function(col) {
  var c = this.dimensions();
  return c.paddingLeft + col * (c.eachWidth + c.spacingX);
};

gg.graph.prototype.yposition = function(row) {
  var c = this.dimensions();
  return c.paddingTop + row * (c.eachHeight + c.spacingY) + c.spacingY;
};

gg.graph.prototype._defaultComputeOptions = function() {
  return {
    defaultScale:this.opts('render-make-default-scale'),
    imputeMapping:this.opts('render-impute-mapping')
  }
}

gg.graph.prototype.compute = function(options) {
  options = options || this._defaultComputeOptions()
  // required computations for render().
  var self = this;
  if (this._facet) { this._facet.prepare(); }

  if (options.imputeMapping) {
    _.invoke(this._layers, 'attachDerivedMappings');
  }

  _.invoke(this._layers, 'resetCalculate');
  _.invoke(this._layers, 'calculate');

  // define necessary scales.
  if (options.defaultScale) {
    _.each(this.makeDefaultScales(), function(scale, aes) { self.scale(aes, scale) });
  }
  this.setDefaultCoord()      // define necessary coords

  // set up the axes before computeScale, since axes dimensions affects
  // graph dimensions, which in turn affect scales
  this._setupAxes();
  // set up legends before computeScale, for the same reason as above
  var position = this.opts("legend-position");
  this._legend = (position != 'none')
               ? gg.guide.legend(this, this._layers, this._scales, position)
               : null;

  this.dimensions(true);

  // **** ADD RANGES AND RUN MAKE ON EACH SCALES
  this.computeScale();
};

gg.graph.prototype.render = function(dom) {
  /**
   * Function to perform all the rendering.
   */
  this._preRender(dom);
  var timer = u.timer();
  this._timer = timer;
  u.raphael_mark();
  // do the required computation.
  if (this.opts('render-compute')) {
    this.compute();
    timer.mark('compute()')
    u.raphael_mark('compute()')
  }
  // derived scale binding should always occur.
  this.bindDerivedScales();
  timer.mark('bindDerivedScales()')
  u.raphael_mark('bindDeriveScales()')

  // Primary elements - grid, axis, and layer.
  var errors = this.checkLayerError();
  this.renderPrimary(errors);
  // timer.mark('renderPrimary()')
  u.raphael_mark('renderPrimary()')

  // Labels.
  this.renderAllFacetLabel();
  timer.mark('renderAllFacetLabel()')
  u.raphael_mark('renderAllFacetLabel()')

  this.renderOtherLabel();
  timer.mark('renderOtherLabel()')
  u.raphael_mark('renderOtherLabel()')

  // Legends.
  this.renderLegend();
  timer.mark('renderLegend()')
  u.raphael_mark('renderOtherLabel()')

  // Branding.
  if (this.opts('branding')) {
    this.render_branding();
  }

  this._postRender();
  return this;
}
gg.graph.prototype.checkLayerError = function() {
  // context without cell or facet index.
  var context = {
    rawScales:this._scales,
    coord:this._coord
  }
  return _.invoke(this._layers, 'checkErrors', context);
}

////////////////////////////////////////////////////////////////////////////////
// Embedding
////////////////////////////////////////////////////////////////////////////////
gg.graph.prototype.toCode = function(indent, fnIndent, dataName) {
  // indent: number of spaces to indent in first line
  // fnIndent: number of spaces to indent in subsequent lines
  // dataName: undefined OR string representing name of data
  var params = [];
  if (!indent) indent = 0;
  var newFnIndent = indent+this._cls_name.length+3;
  // first encode the data
  if (dataName) {
    params = [dataName]; // data is already printed and has a name
  } else if (this._data) {
    params = [this._data.toCode(indent, newFnIndent)];
  }
  // now encode the actual object!
  var graphObj = {
    'cls' : this._cls_name,
    'params' : params,
    'funcs' : []
  }
  // add layers
  _.each(this._layers, function(l) {
    graphObj.funcs.push(['layer', l.toCode(indent, newFnIndent)]);
  });
  // add scales
  _.each(this._scales , function(s, k) {
    if (s) { // why is this ever undefined?!?!?
      var keystr = u.qt(k);
      graphObj.funcs.push(['scale', [keystr, s.toCode(indent, newFnIndent+keystr.length+2)]]);
    }
  });
  // coords
  if (this._coord) {
    graphObj.funcs.push(['coord', this._coord.toCode(indent, newFnIndent)]);
  }
  // facets
  if (this._facet) {
    graphObj.funcs.push(['facet', this._facet.toCode(indent, newFnIndent)]);
  }
  // options (i.e. attributes);
  var attr = this.getAttr();
  _.each(attr, function(v, k) {
    if (k.split('-')[0] == 'render') {
      delete attr[k];
    }
  });
  graphObj.funcs.push(['opts', JSON.stringify(attr)]);

  return u.toCode(indent, fnIndent, graphObj);
}

// end of function wrapping.
})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * 
 * Author : Jeeyoung Kim
 *
 * Wrapper around rendering primitives. Performs the following:
 * - x and y offset.
 * - coordinate transformations.
 **/
;(function(gg){
"use strict";

gg.coord = gg.coord || {};

gg.coord.base = u.makeClass('gg.coord.base');

gg.coord.base.prototype.init = function() {
  this._graph = null; // not null when the graph is attached.
  this._detached = true;
  this._offsetX = 0;
  this._offsetY = 0;
  this._attr = _.clone(gg.opts.coord)
  this._flip = null;
};

gg.coord.base.prototype.flip = function() {
  this._flip = !this._flip;
}

gg.coord.base.prototype.opts = u.opts();

gg.coord.base.prototype.differentOffset = function(x, y) {
  // clone the object with different offset.
  var clone = u.cloneobj(this);
  clone._offsetX += x; clone._offsetY += y;
  clone._attr = u.cloneobj(this._attr);
  return clone;
}

gg.coord.base.prototype.attach = function(graph) {
  if (!this._detached) {
    gg.error(600, "This coordinate is already attached to a graph. Unexpected behaviour may occur.");
  }
  this._detached = false;
  this._graph = graph;

  return this;
}

gg.coord.base.prototype.getPaper = function() {
  return this._graph._paper;
}

gg.coord.base.prototype.set = function(attr, value){
  this.attr[attr] = value;
  return this;
};

/** Abstract coordinate methods */
gg.coord.base.prototype.configScale = function(dim, scales){
  /**
   * Configure the scales. I.e. set the ranges.
   * dim - {x, y, width, height}
   */
  gg.error(10, "Not implemented.");
};

gg.coord.base.prototype.transX = function(x, y) {
  gg.error(10, "Not implemented.");
}

gg.coord.base.prototype.transY = function(x, y) {
  gg.error(10, "Not implemented.");
}

/** Abstract axis drawing methods. */
gg.coord.base.prototype.drawAxis = function(aes, plot) {
  // draw the given axis.
  gg.error(10, "Not implemented.");
};

/** Abstract drawing methods. */
gg.coord.base.prototype.line = function() {
  gg.error(10, "Not implemented.");
};
gg.coord.base.prototype.vline = function(){
  gg.error(10, "Not implemented.");
};
gg.coord.base.prototype.hline = function(){
  gg.error(10, "Not implemented.");
};
gg.coord.base.prototype.rect = function(){
  gg.error(10, "Not implemented.");
};
gg.coord.base.prototype.point = function() {
  var paper = this.getPaper();
  //return paper.gg_point(this);
  return paper.gg_symbol(this);
};
gg.coord.base.prototype.poly = function() {
  var paper = this.getPaper();
  return paper.gg_path(this);
}

gg.coord.base.prototype.text = function(){
  var paper = this.getPaper();
  return paper.gg_text(this);
}

////////////////////////////////////////////////////////////////////////////////
// Embedding
////////////////////////////////////////////////////////////////////////////////
gg.coord.base.prototype.toCode = u.toCodeBasic;

})(gg);
;/**
 * Date : 1/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";

gg.facet = gg.facet || {};

gg.facet.base = u.makeClass('gg.facet.base');

gg.facet.base.prototype.init = function() {
  // inherit from attached graph.
  this._graph = null;
  this._detached = true;
  this._attr = {'free_x': false, 'free_y' : false};
};

gg.facet.base.prototype.attach = function(graph) {
  if (!this._detached) {
    this.warn(700, "This facet is already attached to a graph. Unexpected behaviour may occur.");
  }
  this._graph = graph;
  this._detached = false;
}

gg.facet.base.prototype.opts = u.opts();

gg.facet.base.prototype.warn = function(code, msg) {
  if (!this._detached) {
    this._graph.warn(code, msg);
  } else {
    gg.warn(code, msg);
  }
}

gg.facet.base.prototype.calculate = function(data) {
  var initializer = function() {
    return data.clone();
  };
  var size = this.nrow() * this.ncol();
  var result = u.array(size, initializer);
  var i, len = data.len();

  for(i = 0; i < len; i++) {
    // Bin each item into result grid.
    var obj = data.getObject(i);
    var idx = this.bin(obj);
    if (idx < size) {
      result[idx].push(obj);
    } else {
      gg.warn(702, "Facet number of cells is too small, "+
                   "ignoring data row number "+i);
    }
  }
  return result;
}

gg.facet.base.prototype.getAttr = u.getAttr;

gg.facet.base.bin = function(obj) {
  // bin the current data.
  // Returns the array [row, col] for the index of the bin.
  gg.error(10, "Not implemented.");
}

gg.facet.base.prototype.ncol = function() {
  /** Returns the # of cols in the given facet. */
  gg.error(10, "Not implemented.");
};

gg.facet.base.prototype.nrow = function() {
  /** Returns the # of rows in the given facet. */
  gg.error(10, "Not implemented.");
};

gg.facet.base.prototype.isValidIndex = function(facetIndex) {
  return true;
};

gg.facet.base.prototype.renderLabel = function(paper, row, col) {
  gg.error(10, "Not implemented.");
};

////////////////////////////////////////////////////////////////////////////////
// Embedding
////////////////////////////////////////////////////////////////////////////////
gg.facet.base.prototype.toCode = u.toCodeBasic;

})(gg);
;/**
 * Date : 2/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * Author: Lisa Zhang
 **/
;(function(gg) {
"use strict";

gg.guide = gg.guide || {};

gg.guide.base = u.makeClass('gg.guide.base');

gg.guide.base.prototype.init = function() {
  this._attr = { num_ticks: 5 };
}

gg.guide.base.prototype.opts = u.opts();

})(gg);
;/**
 * Date : 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";

// if USE_GRAPH is set to data, then data() getter will return from
// the attached graph.
var USE_GRAPH = {};

gg.layer = gg.layer || {};

gg.layer.base = u.makeClass('gg.layer.base');

// private class to represent
var Mapping = function(value, defaultMapping) {
  if (_.isFunction(value)) {
    if (value._name) {
      this.val = value._name
    } else {
     this.val = _.uniqueId('$func:');
    }
    this.code = value;
    // if the mapping value is a function.
    this.functionMapping = true;
  } else {
    this.val = value;
  }
  // coerce the values to boolean.
  // false if the mapping is user-specified.
  this.defaultMapping = u.bool(defaultMapping);
};

Mapping.prototype.val = null;
Mapping.prototype.code = null;
Mapping.prototype.defaultMapping = false;
Mapping.prototype.functionMapping = false;

gg.layer.base.prototype.init = function(data) {
  // default settings
  this._attr = u.cloneobj(gg.opts.layer);
  // inherit from the attached graph.
  this._graph = null;
  // Whe have to apply transformation to the input data.
  // Namely, data -> facet -> statistics transformation.
  this._data = null;
  this._facetedData = null; // stores the faceted data. Contains 2-D array of data.
  this._statData = null; // stored the data after statistic transformation. Contains 2-D array of data.

  // undefined here means that it will be modified by the default statistics.
  this._stats = undefined;
  this._detached = true;
  this._default_stats = gg.stats.id; // default statistics;
  this._calculated = false; // flag to track whether _calculate() was called or not.

  this.opts('domain', null);
  if (data) this.data(data);
}

gg.layer.base.prototype.warn = function(code, msg) {
  if (!this._detached) {
    this._graph.warn(code, msg);
  } else {
    gg.warn(code, msg);
  }
}

// getters / setters.
// standardize under .opts.
gg.layer.base.prototype.opts = u.opts();

gg.layer.base.prototype.data = function(data) {
  if (arguments.length === 0) {
    // getter behavior.
    if (this._data === USE_GRAPH) {
      return this._graph.getFilteredData();
      // return this._graph.data();
    }
    return this._data;
  }
  // setter behavior.
  if (data === USE_GRAPH) {
    // special case for USE_GRAPH.
    this._data = data;
  }
  else {
    if (!data || data._cls_name != 'gg.data') {
      // convert the input to gg.data object.
      data = gg.data(data);
    }
    this._data = data;
  }
  return this;
}

gg.layer.base.prototype.stats = function(stats) {
  /** Getter / setter for stats */
  if (arguments.length === 1) {
    stats = u.instantiate(stats);
    if (!stats) {
      gg.error(304, "Attempting to add an undefined or malformed statistic: "+stats);
    }
    this._stats = stats;
    this.resetCalculate();
    return this;
  }
  if (_.isUndefined(this._stats)) {
    var defaultStats = this._default_stats();
    this._stats = defaultStats;
  }
  return this._stats;
}

gg.layer.base.prototype.attach = function(graph) {
  // attach the graph object.
  if (!this._detached) {
    this.warn(300, "This layer is already attached to a graph. Unexpected behaviour may occur.");
  }
  if (!this.data()) {
    this.data(USE_GRAPH);
    // this.data(graph.data());
  }
  this._detached = false;
  this._graph = graph;

  return this;
}

gg.layer.base.prototype.resetCalculate = function() {
  this._calculated = false;
}

////////////////////////////////////////////////////////////////////////////////
// Abstract default scale method.
////////////////////////////////////////////////////////////////////////////////

// Suggest default min / max value for the given aesthetics mapping.
gg.layer.base.prototype.defaultMin = function(aes) {
  /*
  if (aes == 'y') {
    return 0;
  }
  */
}

gg.layer.base.prototype.defaultMax = function(aes) {
}

gg.layer.base.prototype.requiredMap = function() {
  // Returns the required mapping for the given layer. //
  return null;
};

gg.layer.base.prototype.calculatePartials = function() {
  // Returns whether statistics should run partial calculation. //
  return false;
}


gg.layer.base.prototype.layerGroup = function() {
  // Returns the natural groupings of data for this layer. //
  return [];
};

gg.layer.base.prototype.needDefined = function() {
  // returns the list of aesthetics
  // that must be present in each record of data
  // to be rendered.
  return ['x', 'y'];
};


////////////////////////////////////////////////////////////////////////////////
// statistics computing methods.
////////////////////////////////////////////////////////////////////////////////

gg.layer.base.prototype.calculateStats = function(data) {
  var mapping = this.getMap();
  var attr = this.getAttr();
  var need = _.chain(this.needDefined())
              .map(function(aes) { return mapping[aes] })
              .filter(function(x) { return x; })
              .value();
  // don't pass in "group" mapping, if hasGroup() is false.
  if (!this.hasGroup() && mapping.group) {
    delete mapping.group;
  }
  var context = {
    mapping: mapping,
    attr : attr,
    need : need,
    layer_group_aes : this.layerGroup(),
    no_partials : !this.calculatePartials()
    // scales : this._graph._scales // bad
  };
  var result = this.stats().calculateStats(data, context);
  return result;
}

gg.layer.base.prototype.hasGroup = function() { return true; }

gg.layer.base.prototype.calculate = function() {
  // calculate ._facetedData, ._statData.
  // To be exact, we only really need facet from the graph.
  if (this._detached) {
    this.warn(301, "Calculating statistics on a detached layer.");
  }
  // short circuit if it's already calculated.
  if (this._calculated) return;
  this.checkStatsRequiredMapping();
  this.checkLayerRequiredMapping();
  this.checkInvalidMapping();

  // step 1. facet.
  var facet = this._getFacet();
  this._facetedData = facet ? facet.calculate(this.data()) : [this.data()];
  // step 2. statistic computatio on faceted data.
  var calculateStats = _.bind(this.calculateStats, this);
  this._statData = _.map(this._facetedData, calculateStats);
  // step 3. calculate layer-derived values.
  var bindFunctionMapping = _.bind(this._bindFunctionMapping, this);
  _.each(this._statData, function(datas) {
    _.each(datas, bindFunctionMapping);
  });

  this._calculated = true;
  return this;
}

gg.layer.base.prototype._map = function(key, variable) {
  // setter for .map() - used internally.
  this._attr[key] = new Mapping(variable);
}
gg.layer.base.prototype.map = function(key, variable) {
  // convenient getter / setter for aesthetics mapping.
  var self = this;
  if (arguments.length === 0) {
    gg.error(12, "Function map() called with less than 1 parameter.")
  }

  if (arguments.length === 1) {
    if (!_.isString(key) && _.keys(key).length > 0) {
      // object is an argument - use the setter behavior.
      _.each(_.keys(key), function(k) { u.assertAes(k); }); //check first
      _.each(key, function(v, k) {
        self._map(k, v);
      });
      this.resetCalculate();
      return this;
    }

    // getter
    u.assertAes(key);
    var val = this._attr[key];
    if (val instanceof Mapping) {
      return val.val;
    }
    return null;
  }

  // setter behavior.
  u.assertAes(key);
  if (_.isUndefined(variable) || variable === null) {
    // unset behavior.
    this.unset(key)
  } else {
    this._map(key, variable);
  }
  this.resetCalculate();
  return this;
}

gg.layer.base.prototype.isDefaultMap = function(key) {
  var m = this._attr[key];
  if (m instanceof Mapping) {
    return m.defaultMapping
  }
  return false;
}

gg.layer.base.prototype.getAttr = function() {
  /** Returns all the attributes mapping. */
  var obj = {};
  _.each(this._attr, function(value, key) {
    if (!(value instanceof Mapping)) {
      obj[key] = value;
    }
  });
  return obj;
}

gg.layer.base.prototype.getMap = function() {
  /** Returns all the aesthetics mapping. */
  var obj = {};
  _.each(this._attr, function(value, key) {
    if (value instanceof Mapping) {
      obj[key] = value.val;
    }
  });
  return obj;
}

gg.layer.base.prototype.unset = function(key) {
  if (_.has(this._attr, key)) {
    delete this._attr[key];
  }
  if (_.has(gg.opts.layer, key)) {
    // reset to default
    // this will NOT work if more options are necessary added!
    this._attr[key] = gg.opts.layer[key];
  }
  return this;
}

gg.layer.base.prototype.getAestheticsGroup = function(aes) {
  // return a group of aesthetics taht belong in the same group.
  var fullname = aes + '_';
  var map = this.getMap();
  var obj = {};
  _.chain(map)
    .keys()
    .filter(function(x) {return x == aes || u.startswith(x, fullname)})
    .map(function(k) {
      obj[k] = map[k];
    });
  // make y_override ACTUALLY override y...
  if (obj.y && obj.y_override) {
    delete obj.y;
  }
  return obj;
}

// getters
gg.layer.base.prototype.getData = function(aes, id) {
  /**
   * Return a given data, associated with the given aesthetic mapping.
   */
  if (!this.data()) {
    // no data attached.
    return null;
  }

  var varname = this.map(aes);
  if (!varname) {
    // no aesthetics attached.
    return null;
  }

  return this.data().get(varname, id);
};

gg.layer.base.prototype.getScales = function(context) {
  // Bind the passed in scales, with the aesthetics mapping
  // of the current layer.
  var scales = context.rawScales;
  var s; // tmp variable
  var output = {};
  _.each(this._attr, function(value, key) {
    if (value instanceof Mapping) {
      var scale = scales[key];
      if (scale) {
        output[key] = _.bind(scale.apply, scale, value.val);
        // for debugging.
        // output[key]._debug_context = scales[key];
      }
    } else if (key == 'x' || key == 'y') {
      s = scales[key];
      if (context['free_'+key]) { // change the domain of x and y scales
        if (s._type == 'category') {
          s.make(this._levels(key, null, context.facetId));
        }
      }
      // constant value, with scale applied.
      output[key] = u.constfunc(s.apply(value));
    } else {
      // use the constant value.
      output[key] = u.constfunc(value);
    }
  });
  return output;
};


////////////////////////////////////////////////////////////////////////////////
// renderer
////////////////////////////////////////////////////////////////////////////////
gg.layer.base.prototype.renderEntry = function(context) {
  // actual entry point for the rendering.
  // performs some calculations
  this.calculate();

  if (this.hasGroup()) {
    context.computedData = this._statData[context.facetIndex];
  } else {
    context.computedData = this._statData[context.facetIndex][0];
  }
  context.scales = this.getScales(context);
  var width = null;
  if (true /* width === null */) {
    // for discrete scales.
    width = context.rawScales.x.width();
    context.align = 'center';
  }
  context.width = width;

  if (context.computedData) {
    // false if facetIndex > this._statData.length
    //       if no data point to be plotted
    if (this.opts('visible')) {
      // 'visible' option can be used to disable rendering.
      this.render(context);
    }
  }

  // do some postprocessing.
};

gg.layer.base.prototype.checkErrors = function(context) {
  // check for any errors that might belong in the layer.
  if (_.keys(this.getMap()).length === 0) {
    this.warn(320, "No mapping has been set in layer "+this._cls_name);
    return true;
  }
  return false;
}

gg.layer.base.prototype.render = function(context) {
  // this function should replace render().
  gg.error(10, "Not implemented.");
};
////////////////////////////////////////////////////////////////////////////////
// Min / max / levels / type() calculation
////////////////////////////////////////////////////////////////////////////////

var _empty = [];

var QUERY_AES = 'aes';
var QUERY_KEY = 'key';
var QUERY_AES_GROUP = 'aes_group';
var QUERY_DATA = 'data';

gg.layer.base.prototype.queryData = function(aes, queryType, queryFunc, collectorFunc, facetId) {
  // Implementation behind min(), max().

  // aes(string) - name of the aesthetics we are querying.
  // queryType - data, aes_group, aes or key
  // queryFunc(function(key, data) -> result) - function to be run over all the dataset.
  // collectorFunc(function array of result -> combined result) - function to be run over all the output of the queryFunc.
  // facetId - the facet index to use (empty or -1 => use all facets)

  if (queryType === QUERY_DATA) {
    // no calculate() or collectorFunc required
    return queryFunc(aes, this.data());
  }

  var self = this;
  this.calculate(); // cacculate the statistics.

  // default query type
  queryType = queryType || QUERY_AES_GROUP;
  // default data & map function
  facetId = _.isNumber(facetId) ? facetId : -1;
  if (facetId > self._statData.length) {
    gg.error(-1, "Attempting to access facet id "+facetId+
                 " when there are only "+self._statData.length);
  }
  var mapFunc = facetId == -1 ? u.doubleMap : _.map;
  var data = facetId == -1 ? self._statData : self._statData[facetId];

  // do real work
  var key, keys, tmp1;
  if (queryType === QUERY_AES_GROUP) {
    // run it over multiple keys belonging to the same aes group
    keys = _.values(this.getAestheticsGroup(aes));
    var collection = _.map(keys, function(key) {
      return mapFunc(data, _.bind(queryFunc, null, key));
    })
    tmp1 = u.concat(collection);
  } else {
    // run it over a single key.
    if (queryType === QUERY_KEY) {
      key = aes;
    } else if  (queryType === QUERY_AES) {
      key = this.map(aes);
    } else {
      this.warn(-1, "Should not reach here.");
    }
    tmp1 = mapFunc(data, _.bind(queryFunc, null, key));
  }
  // flatten facet.
  var tmp2 = u.concat(tmp1);
  return collectorFunc(tmp2);
}

gg.layer.base.prototype.min = function(aes, queryType, facetId) {
  var query = function(key, data) { return data.min(key); }
  var type = this.type(aes, queryType);
  var collector = gg.type.fromString(type).min;
  return this.queryData(aes, queryType, query, collector, facetId);
}

gg.layer.base.prototype.max = function(aes, queryType, facetId) {
  var query = function(key, data) { return data.max(key); }
  var type = this.type(aes, queryType);
  var collector = gg.type.fromString(type).max;
  return this.queryData(aes, queryType, query, collector, facetId);
}

gg.layer.base.prototype.levels = function(aes, queryType, facetId) {
  var query = function(key, data) { return data.levels(key); }
  var type = this.type(aes, queryType);
  var typeObj = gg.type.fromString(type);
  var collector = function(x) {
    return u.mergeArrays(x, typeObj.represent);
  };
  return this.queryData(aes, queryType, query, collector, facetId);
}

gg.layer.base.prototype.type = function(aes, queryType, facetId) {
  var query = function(key, data) { return data.type(key); };
  var collector = u.unionType;
  return this.queryData(aes, queryType, query, collector, facetId);
}

////////////////////////////////////////////////////////////////////////////////
// Private methods.
////////////////////////////////////////////////////////////////////////////////
gg.layer.base.prototype.checkStatsRequiredMapping = function() {
  var requiredMap = this.stats().requiredMap() || [];
  var missing = _.difference(requiredMap, _.keys(this.getMap()));
  if (missing.length > 0) {
    gg.error(302, "Variable need to be mapped to the following aesthetics: " + missing.join(', '));
  }
}

gg.layer.base.prototype.checkLayerRequiredMapping = function() {
  var requiredMap = this.stats().requiredMap() || [];
  var missing = _.difference(requiredMap, _.keys(this.getMap()));
  if (missing.length > 0) {
    gg.error(302, "Variable need to be mapped to the following aesthetics: " + missing.join(', '));
  }
};

gg.layer.base.prototype._bindFunctionMapping = function(data) {
  var functionMappings = this._getFunctionMappings();
  _.each(functionMappings, function(mapping) {
    var dataKey = mapping.val;
    if (data.hasKey(dataKey)) {
      return
    }
    var fn = mapping.code;
    data.derive(fn, dataKey);
  });
};

gg.layer.base.prototype._getFunctionMappings = function() {
  var result = [];
  _.each(this._attr, function(value, key) {
    if (value instanceof Mapping && value.functionMapping) {
      result.push(value);
    }
  });
  return result;
}

gg.layer.base.prototype.getInvalidMapping = function() {
  // run assertions against current mapping.
  var self = this;
  var dataKeys = this.data().keys();
  var statsKeys = this.stats().keys();
  var keys = _.union(dataKeys, statsKeys);
  var invalid = {};

  _.each(this.getMap(), function(dataKey, aes) {
    // if it's default map, then it SHOULD not be an invalid mapping.
    if (_.include(keys, dataKey)) { return; }
    // omit function mapping.
    if (self.opts(aes).functionMapping) { return; }

    // add to invalid
    invalid[aes] = dataKey;
  });
  return invalid;
}

gg.layer.base.prototype.checkInvalidMapping = function() {
  var invalid = this.getInvalidMapping();
  if (_.size(invalid) > 0) {
    var message = _.map(invalid, function(dataKey, aes) {
      return "Mapping of aesthetics " + aes + " to variable " + dataKey + " is invalid."
    });
    gg.error(303, message.join('\n'));
  }
}

gg.layer.base.prototype.checkAllMapping = function() {
  this.checkStatsRequiredMapping();
  this.checkInvalidMapping();
}

gg.layer.base.prototype.imputeMapping = function(mapping, opts) {
  var result = {};
  if (!mapping || !opts) { return result }
  var attach = function(k, v) {
    mapping[k] = v;
    result[k] = v; // copy the value.
  }

  _.each(opts, function(imputeFrom, key) {
    if (mapping[key]) { return }

    if (_.isArray(imputeFrom)) {
      for (var i = 0; i < imputeFrom.length; i++) {
        var potential = imputeFrom[i];
        if (mapping[potential]) {
          attach(key, mapping[potential]);
          return;
        }
      }
    } else if (mapping[imputeFrom]) {
      attach(key, mapping[imputeFrom]);
    }
  });

  return result;
}

gg.layer.base.prototype._removePreviousDefaults = function() {
  var self = this;
  _.each(this._attr, function(val, key) {
    if (val instanceof Mapping && val.defaultMapping) {
      delete self._attr[key]
    }
  })
}

gg.layer.base.prototype._getFacet = function() {
  if (this._graph) {
    return this._graph.facet()
  }
  return null;
}

gg.layer.base.prototype._attachImputed = function(key, value) {
  var attr = this._attr[key];
  if (_.isUndefined(attr) || !(attr instanceof Mapping)) {
    // case 1 - no mapping specified.
    this._attr[key] = new Mapping(value, true);
  } else if (attr instanceof Mapping && attr.defaultMapping) {
    // case 2 - _attr mapping is present, and it is default mapping.
    // override the previous default value.
    this._attr[key].value = value;
  }
}

gg.layer.base.prototype.attachDerivedMappings = function() {
  // Obtain the default mapping from the statistics.
  this._removePreviousDefaults();
  var self = this;
  var stats = this.stats();
  var mapping = this.getMap(); // scratch-pad to store mappings.
  var attachImputed = function(v, k) { self._attachImputed(k, v) };

  var layerImputed = this.imputeMapping(mapping); // layer level defaults
  var statsImputed = stats ? stats.imputeMapping(mapping) : {};

  var imputed = _.defaults({}, layerImputed, statsImputed);
  _.each(imputed, attachImputed);
  // return the new mappings that it has attached.
  return imputed;
}

gg.layer.base.prototype.toCode = function(indent, fnIndent) {
  // create the layerObject to pass through to u.toCode
  var layerObj = { 'cls' : this._cls_name }
  // add info about data if exists
  if (this._data && this._data !== USE_GRAPH) {
    var dataFnIndent = indent+this._cls_name.length+3; // Author: Lisa Zhang
    layerObj.params = [this._data.toCode(indent, dataFnIndent)];
  }
  // add function calls to opts, map, and stats
  layerObj.funcs = [ ['opts', JSON.stringify(this.getAttr())] ];
  var mapping = this.getMap();
  _.each(mapping, function(v, k) {
    if (!_.include(gg.opts.aes, k.split('_')[0])) {
      delete mapping[k];
    }
    if (k == 'tooltip') {
      delete mapping[k];
    }
  });
  if (_.keys(mapping).length > 0) {
    layerObj.funcs.push(['map', JSON.stringify(mapping)]);
  }
  if (this._stats) {
    layerObj.funcs.push(['stats', this._stats.toCode()]);
  }
  // yay!
  return u.toCode(indent, fnIndent, layerObj);
}

gg.layer.base.prototype.fillZero = function(data, context, vars) {
  var xKey = this.map('x');
  var domain = this.opts('domain');
  var levels = data.levels(xKey);
  var result = data.getRaw().slice();
  var min = context.rawScales.x.opts('domain_low');
  var max = context.rawScales.x.opts('domain_high');
  var value = min;
  var obj = {};
  var setZero = function(v) { obj[v] = 0 };
  while(value <= max) {
    if (!_.include(levels, value)) {
      obj = {};
      obj[xKey] = value;
      _.each(vars, setZero);
      result.push(obj);
    }
    value = domain(value);
  }
  return data.clone(result);
}

})(gg);
;/**
 * Date : 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";

var TickObject = function(data, pos, label) {
  // Object that represents ticks.
  this.data = data;
  this.label = label;
  this.pos = pos; // position on the <svg>.
}

gg.scale = gg.scale || {};

gg.scale.base = u.makeClass('gg.scale.base');

gg.scale.base.prototype.init = function() {
  // this._aes = aes; // aesthetics that this is mapped to
  this._aes = null;
  this._graph = null; // attached graph
  this._detached = true; // whether it is attached or not
  this._type = null; // date, number, category
  this._attr = {
    "pixel_per_tick_x" : 60,
    "pixel_per_tick_y" : 30,
    "ticks" : null, //override if ticks are predetermined
    "numticks" : null,
    // user set values of min / max
    "min": null,
    "max": null,
    // scale custom absolute min / max.
    "absolute_min": -Infinity,
    "absolute_max": Infinity,
    "domain_low": null,
    "domain_high": null,
    "range_low": null,
    "range_high": null
  }
  this._facetIndex = -1;
}

gg.scale.base.prototype.opts = u.opts();

gg.scale.base.prototype.warn = function(code, msg) {
  if (!this._detached) {
    this._graph.warn(code, msg);
  } else {
    gg.warn(code, msg);
  }
}

gg.scale.base.prototype.CONTINUOUS = false;
gg.scale.base.prototype.DISCRETE = false;

gg.scale.base.prototype.getAttr = u.getAttr

gg.scale.base.prototype.attach = function(graph, aes) {
  if (!this._detached) {
    this.warn(400, "This scale is already attached to a graph. Unexpected behaviour may occur.")
  }
  if (!graph) {
    gg.error(401, "Attempting to attach a scale to an empty graph.")
  }
  if (!aes) { // should also check for validity here!
    gg.error(402, "Scale type " + this._cls_name + " cannot to be attached to aesthetics " + aes + ".")
  }

  this._aes = aes;
  this._graph = graph;
  this._detached = false;
}

gg.scale.base.prototype.min = function(val) {
  var absmin = this._attr.absolute_min;
  if (arguments.length === 1) {
    if (_.isNumber(absmin) && val < absmin) {
      this.warn(403, "Minimum cannot be set below "+absmin+". Using "+absmin+" instead of "+val+".");
      val = absmin;
    }
    this._attr.min = val;
    return this;
  }
  return this._attr.min;
}

gg.scale.base.prototype.max = function(val) {
  var absmax = this._attr.absolute_max;
  if (arguments.length === 1) {
    if (_.isNumber(absmax) && val > absmax) {
      this.warn(403, "Maximum cannot be set above "+absmax+". Using "+absmax+" instead of "+val+".");
      val = absmax;
    }
    this._attr.max = val;
    return this;
  }
  return this._attr.max;
};

gg.scale.base.prototype.rangeSize = function() {
  return Math.abs(this._attr.range_low - this._attr.range_high)
}
gg.scale.base.prototype.type = function() {
  return this._type;
}

gg.scale.base.prototype._saneNumber= function(x){
  return _.isNumber(x) && !isNaN(x) && x != Infinity && x != -Infinity;
}
gg.scale.base.prototype._makeDomain = function(){
  //todo (lisa, 4/22/12): this logic is wrong!
  var aes = this._aes;

  var min = this._graph.min(aes);
  var defaultMin = this._graph.defaultMin(aes, min);
  var max = this._graph.max(aes)
  var defaultMax = this._graph.defaultMax(aes, max);

  this._attr.domain_low = _.chain([min, this._attr.min, defaultMin])
                           .filter(_.isNumber).min().value();
  this._attr.domain_high= _.chain([max, this._attr.max, defaultMax])
                           .filter(_.isNumber).max().value();
  return [this._attr.domain_low, this._attr.domain_high];
};

gg.scale.base.prototype.domain = function(domain) {
  if (arguments.length === 1) {
    this._attr.min = domain[0]
    this._attr.max = domain[1]
    return this;
  }
  return [this._attr.min, this._attr.max];
}

gg.scale.base.prototype.range = function(value) {
  if (arguments.length === 1) {
    this._attr.range_low = value[0];
    this._attr.range_high = value[1];
    return this;
  }
  if (!_.isUndefined(this._attr.range_low) && !_.isUndefined(this._attr.range_high)) {
    return [this._attr.range_low, this._attr.range_high];
  } else {
    return null; // range not set.
  }
}

gg.scale.base.prototype.make = function() {
  // do pre-calculations on generating the scale
  gg.error(10, "Not implemented.");
}


gg.scale.base.prototype._apply = function(value) {
  // actual implementaiton of the scale.
  gg.error(10, "Not implemented.");
}

gg.scale.base.prototype.apply = function(varname, dataobj) {
  /** Apply the scale. */
  if (arguments.length == 1) {
    // when there is only one argument, we're actually passing in the dataobj
    // when there are multiple args, we're using binding, so I can't switch
    // varname to the second variable :(
    dataobj = varname;
    varname = undefined;
  }

  if (dataobj && dataobj._cls_name === 'gg.data') {
    // another overriden case - use the first element, in case the input is data frame.
    dataobj = dataobj.getObject(0);
  }

  var input = _.isUndefined(varname) || _.isUndefined(dataobj[varname])
            ? dataobj
            : dataobj[varname];
  return this._apply(input);
}

gg.scale.base.prototype._tickObject = function(data, pos, label) {
  // construct new TickObject.
  var tmp = new TickObject(data, pos, label);
  return tmp
}

gg.scale.base.prototype._suggestNumticks = function(numticks, flip, pixelPerTick) {
  /*
  returns a good # of ticks to be used.

  This method follows the following logic:

  1. if numtics is provided, use that.
  2. if opts('numticks') is provided, use that.
  3. if pixelPerTick is provided, guess the number by (range / pixelPerTick).
  4. use opts('pixel_per_tick_x|y') instead for the above formula.
  */
  if (!_.isNumber(numticks)) {
    numticks = null;
  }

  if (numticks === null) {
    // guess the good # of ticks.
    numticks = this.opts('numticks');
    if (_.isNull(numticks)) {
      var range = this.rangeSize()
      if (!(_.isNumber(pixelPerTick) && pixelPerTick > 0)) {
        pixelPerTick = (this._aes == 'x' == Boolean(flip))
                           ? this.opts('pixel_per_tick_y')
                           : this.opts('pixel_per_tick_x');
      }
      numticks = range / pixelPerTick;
    }
  }
  return Math.ceil(numticks);
}

gg.scale.base.prototype.ticks = function(numticks) {
  gg.error(10, "Not implemented.");
}

gg.scale.base.prototype.maxLabelWidth = function() {
  gg.error(10, "Not implemented.");
}

gg.scale.base.prototype.toCode = u.toCodeBasic

})(gg);
;/**
 * Date: 1/25/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Author : Jeeyoung Kim
 * Specifies the statistical transformation done on data.
 *
 * TODO (Jeeyoung Kim) - group function with multiple group keys - this is useful for 2-D histogram.
 */

;(function(gg){
"use strict";
// begin wrapper.

gg.stats = gg.stats || {};

gg.stats.base = u.makeClass('gg.stats.base');

gg.stats.base.prototype.init = function() {
  this._attr = {};
}

// Abstract function
gg.stats.base.prototype.imputeMapping = function(mapping, opts) {
  var result = {};
  if (!mapping || !opts) { return result }
  var attach = function(k, v) {
    mapping[k] = v;
    result[k] = v; // copy the value.
  }

  _.each(opts, function(imputeFrom, key) {
    if (mapping[key]) { return }

    if (_.isArray(imputeFrom)) {
      for (var i = 0; i < imputeFrom.length; i++) {
        var potential = imputeFrom[i];
        if (mapping[potential]) {
          attach(key, mapping[potential]);
          return;
        }
      }
    } else if (mapping[imputeFrom]) {
      attach(key, mapping[imputeFrom]);
    }
  });

  return result;
}

// Abstract function
gg.stats.base.prototype.requiredMap = function() {
  // return the array of required mappings.
  return null;
}

gg.stats.base.prototype.compute = function(data, context) {
  /**
   * Author : Jee
   * A logic that will perform the actual statistics calculations.
   *
   * By default, it applies no transformation to the input data.
   */
  return data;
}

gg.stats.base.prototype.postProcess = function(computed, context) {
  return computed;
}

gg.stats.base.prototype.calculateStats = function(data, context) {
  return this.group(data, context);
}

gg.stats.base.prototype.group = function(data, context) {
  /**
   * Group the given input data, by statistics.
   * context = passed in context. The same unmodified object
   * will be passed to compute() and postProcess()
   * context.groupFunctions (optional) - A function G(.) to apply to determine whether a record of
   * data belongs in the same group. If not specified, X === Y is checked. Otherwise,
   * G(X) == G(Y) will be checked. Useful for binning, etc.
   *
   * This function will return a list of data.
   * */
  var self = this;
  var mapping = context.mapping;

  // First figure out the grouping functions: change it from an {aes: fnc}
  // mapping to a {var: fnc} mapping.
  var groupFuncs = {};
  var groupFunctions = context.groupFunctions || {};

  // figure out the "need" functions
  if (!context.need) context.need = []
  var filterfunc = function(obj) {
    for (var i = 0; i < context.need.length; i++) {
      if (_.isNull(obj[context.need[i]])) {
        // undefined should be bad here too
        return false;
      }
    }
    return true;
  }

  _.each(mapping, function(aes_var, aes_name) {
    // group by ALL grouping parameters...
    var base = u.getBaseAes(aes_name);
    if (base == 'group') {
      groupFuncs[aes_var] = groupFunctions[aes_name] || u.identity;
    }
  });

  // Actually group the data.
  var groupedData = data.group(groupFuncs);

  // Compute the data
  var computed = _.map(groupedData, function(_data) {
    return self.compute(_data, context);
  });

  // PostProcess -- i.e. calculation of partials
  if (!context.no_partials) {
    var pp_aes = context.mapping.x;
    var regrouped;
    var ppGroup = {};
    if (pp_aes) { // rebucket by pp_aes
      ppGroup[pp_aes] = groupFuncs[pp_aes] || u.identity;
    } 
    regrouped = gg.data.group(computed, ppGroup, filterfunc);

    var levels = {}
    _.each(mapping, function(aes_var, aes_name) {
      var base = u.getBaseAes(aes_name);
      if (base == 'group' && aes_name !== 'group_stats'
            && !levels[aes_name]) {
        levels[aes_var] = data.levels(aes_var);
      }
    });

    computed = this.postProcess(regrouped, context, levels);
  }

  // Group ONLY by layer-level grouping
  var group_aes = context.layer_group_aes || ['group'];
  if (group_aes) {
    var layerGroupsOnly = {};
    _.each(group_aes, function(a) {
      var v = mapping[a];
      if (v) {
        layerGroupsOnly[v] = groupFunctions[v] || u.identity;
      }
    });
    computed = gg.data.group(computed, layerGroupsOnly, filterfunc);
  }
  return computed
}


gg.stats.base.prototype.keys = function() {
  return [];
}

////////////////////////////////////////////////////////////////////////////////
// Embedding
////////////////////////////////////////////////////////////////////////////////
gg.stats.base.prototype.toCode = u.toCodeBasic;

// end wrapper.
})(gg);
;/**
 * Date : 3/12/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

// there are 3 + 1 types in our system.
// discrete
// number
// date
// unknown

;(function(gg) {
"use strict";

gg.type = {};

var _TYPES = null;

var _initCache = function() {
  return {
    'number': new gg.type.number(),
    'category': new gg.type.category(),
    'unknown': new gg.type.unknown(),
    'date': new gg.type.date()
  }
}

gg.type.fromString = function(name) {
  // cache.
  if (_TYPES === null) { _TYPES = _initCache() }
  if (!name) { name =  'unknown' }
  var value = _TYPES[name];
  if (!value) gg.error(800, "No such type " + name + ".");
  return value;
}

gg.type.base = u.makeClass('gg.type.base');

gg.type.base.prototype.init = function() {
  _.bindAll(this, 'min', 'max');
}

gg.type.base.prototype.min = function(values) {
  gg.error(10, "Not implemented.");
}

gg.type.base.prototype.max = function(values) {
  gg.error(10, "Not implemented.");
}

gg.type.base.prototype.ticks = function(/* figure out what to pass in here */) {
  gg.error(10, "Not implemented.");
}

gg.type.base.prototype.coerce = function(value, context) {
  gg.error(10, "Not implemented.");
}

gg.type.base.prototype.validate = function(value, context) {
  gg.error(10, "Not implemented.");
}

gg.type.base.prototype.defaultScale = function(aes) {
  gg.error(10, "Not implemented.");
}

gg.type.base.prototype.represent = function(value) {
  // return primitive type representation, so that it can be used for sorting.
  gg.error(10, "Not implemented.");
}

// private helper methods.
gg.type.base.prototype._postProcess = function(aes, scale) {
  // sensible defaults for scales.
  if (aes == 'opacity') {
    scale.range([0.2, 0.9]);
  } else if (aes == 'strokewidth') {
    scale.range([0,5]);
  } else if (aes == 'radius') {
    scale.opts('transform', 'sqrt');
    scale.range([0.5,10]);
    scale.min(0);
  }
}

})(gg);
;// base class for aggregating stats:
// x - can be continuous (binnned) or discrete
// y - should be continuous.

;(function(gg){
"use strict";

gg.stats.aggregate = u.makeClass('gg.stats.aggregate', gg.stats.base);

gg.stats.aggregate.prototype.init = function() {
  gg.stats.base.prototype.init.call(this);
}

gg.stats.aggregate.prototype.calculateStats = function(data, context) {
  var mapping = context.mapping;
  return this.group(data, context)
}

gg.stats.aggregate.prototype.imputeMapping = function(map, opts) {
  var mapping = gg.stats.base.prototype.imputeMapping.call(this, map, opts);
  return mapping;
}

gg.stats.aggregate.prototype.keys = function() {
  return [];
}

gg.stats.aggregate.prototype.makeMeta = function(data) {
  var metas = data.metas();
  var keys = this.keys();
  _.each(keys, function(key) {
    if (!_.contains(metas, key)) {
      metas[key] = {
        type: 'number'
      };
    }
  });
  return metas;
}

})(gg);
;/**
 * Date: 2/22/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 */
;(function(gg){
"use strict";

gg.stats.sum = u.makeClass('gg.stats.sum', gg.stats.aggregate);

gg.stats.sum.prototype.compute = function(data, context) {
  var mapping = context.mapping;
  var len = data.len()
  var y_mapping = mapping.y;

  var result = data.getObject(0);
  if (y_mapping) {
    var i = 1; // hack for "need" calculation
    while (i < len &&_.isNull(result[y_mapping])) {
      result = data.getObject(i);
      i++;
    }
    var sum = u.sum.apply(data.get(y_mapping));
    result.$sum = sum;
  } else {
    result.$sum = context.attr.y * data.len();
  }
  var metas = this.makeMeta(data);
  return gg.data([result], metas);
};

gg.stats.sum.prototype.imputeMapping = function(map) {
  var mapping = gg.stats.aggregate.prototype.imputeMapping.call(
    this, map, {'group_stats' : 'x' } );
  return _.extend(mapping, {
    'y_override': "$sum",
    'y_1':'$partial_1',
    'y_2':'$partial_2'});
}


gg.stats.sum.prototype.keys = function() {
  var sup = gg.stats.aggregate.prototype.keys.call(this);
  return sup.concat(['$sum','$partial_1','$partial_2']);
};

gg.stats.sum.prototype.postProcess = function(computed, context, levels) {
  var result = []      // temporary array to store the processed elts
  var regrouped;       // the final array with $partials calculated
  var keys = _.keys(levels); // keys to sort by
  var offset = { 'plus' : 0, 'minus' : 0 } // separate store for + and - values
  var grp = '';        // either 'plus' or 'minus' (which offset to use)
  var sampleObj = {}   // a sample object from the same x-grouping. used for
                       // new object creation so all aesthetics are not undef
  var pushObj = function(row) {
    // helper function clalculate partials and push to result[]
    grp = row.$sum >= 0 ? 'plus' : 'minus';
    row.$partial_1 = offset[grp];
    row.$partial_2 = row.$partial_1 + row.$sum;
    offset[grp] += row.$sum;
    result.push(row);
  }
  var pushNewItem = function(current) {
    // helper function to add a new object with $sum=0 and push to result[]
    var newItem = _.clone(sampleObj);
    newItem.$partial_1 = offset.plus;
    newItem.$partial_2 = offset.plus;
    newItem.$sum = 0;
    _.each(keys, function(k) {
      newItem[k] = current[k];
    });
    result.push(newItem);
  }

  if (!levels || keys.length === 0) {
    // if no levels are given, then we don't need to worry about filling in new
    // objects with $sum=0. Instead we can just calculate partials for existing
    // objects only. Easy!
    regrouped = _.map(computed, function(data) {
      // reset some vars
      result = [];
      offset = { 'plus' : 0, 'minus' : 0 }
      // do actual calculation
      _.each(data._internal, pushObj);
      return data.clone(result)
    });
  } else {
    // levels are given. we do need to worry about there being an object for
    // every elt in the cartesian product of levels. so
    var dataIndex = 0;   // index of already existing data points
    var obj;             // temporary storage of existing data obj
    var indices = {}     // current multi-index for each level[key]
    var current = {}     // current value of keys represented by the multi-index
    var maxindices = {}  // max index for each level[key], calculated below:
    _.each(levels, function(val, key) {
      maxindices[key] = val.length;
    });

    // some helper functions
    var comparator = u.compareBy(keys); // compares 2 objs and gives -1, 0, or 1
    var setCurrent = function() {
      // figure out the current value of keys represented by current multi-index
      _.each(indices, function(v, k) {
        current[k] = levels[k][v];
      });
    }
    var incrementIndex = function() {
      // increment the multi-index and returns:
      //    true : if incrementation succeeded (more elements to go through)
      //   false : otherwise (no more elts to go through)
      for (var j = keys.length-1; j >= 0; j--) {
        var k = keys[j];
        indices[k]++;
        if (indices[k] < maxindices[k]) {
          return true;
        }
        indices[k] = 0;
      }
      return false;
    }

    // actual calculation!
    regrouped = _.map(computed, function(dataobj) { // for each x
      // reset things;
      _.each(keys, function(k) { indices[k] = 0; });
      result = [];
      offset = { 'plus' : 0, 'minus' : 0 }
      dataIndex = 0;
      // sort the data using the comparator
      var internal = dataobj._internal.sort(comparator);
      sampleObj = internal[0];
      var moreVars = true;
      // ACTUAL actual calculation
      while (moreVars || dataIndex < internal.length) {
        setCurrent();
        if (dataIndex < internal.length &&
            comparator(internal[dataIndex], current) === 0) {
          pushObj(internal[dataIndex]); // item exists!
          dataIndex ++;
        } else {
          pushNewItem(current); // item does not exist!
        }
        moreVars = incrementIndex();
      }
      return dataobj.clone(result);
    });
  }
  return regrouped;
};

})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg){
"use strict";
gg.coord.cart = u.makeClass('gg.coord.cart', gg.coord.base);

gg.coord.cart.prototype.init = function(flip) {
  gg.coord.base.prototype.init.call(this);
  this._flip = u.bool(flip);
};

gg.coord.cart.prototype.configScale = function(dim, scales){
  if (!this._flip) {
    scales.x.range([dim.x, dim.width]);
    scales.y.range([dim.height, dim.y]);
  } else {
    scales.x.range([dim.height, dim.y]);
    scales.y.range([dim.x, dim.width]);
  }
};

gg.coord.cart.prototype.transX = function(x, y) {
  return this._flip ? y : x;
}

gg.coord.cart.prototype.transY = function(x, y) {
  return this._flip ? x : y;
}

// Implementation of drawing functions.
gg.coord.cart.prototype.vline = function() {
  var paper = this.getPaper();
  return paper.gg_cart_vline(this);
};
gg.coord.cart.prototype.hline = function() {
  var paper = this.getPaper();
  return paper.gg_cart_hline(this);
};
gg.coord.cart.prototype.line = function() {
  var paper = this.getPaper();
  return paper.gg_cart_line(this);
};
gg.coord.cart.prototype.rect = function() {
  var paper = this.getPaper();
  return paper.gg_cart_rect(this);
};

gg.coord.cart.prototype.toCode = function(indent, fnIndent) {
  return u.toCode(indent, fnIndent, {
    'cls' : this._cls_name,
    'params' : [this._flip.toString()]
  });
}

})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

;(function(gg){
"use strict";
gg.coord.polar = u.makeClass('gg.coord.polar', gg.coord.base);

gg.coord.polar.prototype.init = function(flip){
  gg.coord.base.prototype.init.call(this);
  this._flip = u.bool(flip);
  this._configured = false;
};

gg.coord.polar.prototype.configScale = function(dim, scales){
  this._offsetX = dim.x + dim.width/2;
  this._offsetY = dim.y + dim.height/2;
  // var weight = 0.8; // TODO - abstract this out.
  var weight = 1.0;
  var boxSize = (Math.min(dim.width, dim.height)/2) * weight;
  if (!this._flip) {
    scales.x.range([0, boxSize]);
    scales.y.range([0, 2 * Math.PI]);
    scales.y.opts('expand', 0);
  } else {
    scales.y.range([0, boxSize]);
    scales.x.range([0, 2 * Math.PI]);
    scales.x.opts('expand', 0);
  }
  this._configured = true;
};

gg.coord.polar.prototype.transX = function(x, y) {
  if (!this._configured) {
    gg.error(605, "Attempting to use a coordinate that has not been configured.");
  }
  if (!this._flip)
    return (x * Math.cos(y - Math.PI/2));
  return (y * Math.cos(x - Math.PI/2));
}

gg.coord.polar.prototype.transY = function(x, y) {
  if (!this._configured) {
    gg.error(605, "Attempting to use a coordinate that has not been configured.");
  }
  if (!this._flip)
    return (x * Math.sin(y - Math.PI/2));
  return (y * Math.sin(x - Math.PI/2));
}

gg.coord.polar.prototype.vline = function() {
  var paper = this.getPaper();
  return paper.gg_polar_vline(this);
};

gg.coord.polar.prototype.hline = function() {
  var paper = this.getPaper();
  return paper.gg_polar_hline(this);
};

gg.coord.polar.prototype.rect = function() {
  var paper = this.getPaper();
  return paper.gg_polar_rect(this);
}

gg.coord.polar.prototype.toCode = function(indent, fnIndent) {
  return u.toCode(indent, fnIndent, {
    'cls' : this._cls_name,
    'params' : [this._flip.toString()]
  });
}

gg.coord.polar.prototype.poly = function() {
  // calls gg_path, with the own smoothing function to smooth out the line segments.
  var paper = this.getPaper();
  var smoother = _.bind(this._smoother, this);
  return paper.gg_path(this, smoother);
}

// functions that are used in smoother.
gg.coord.polar.prototype._getRange = function() {
  return Math.PI * 2;
}

gg.coord.polar.prototype._getTickSize = function() {
  // sampling rate - between (0, 1] - smaller is finer.
  return 0.01;
}

gg.coord.polar.prototype._smoother = function(xs, ys) {
  // smoothing function.
  var flip = this._flip;
  var length = xs.length;
  var idx = 0;
  var first = true;

  var cx; var cy; // current inputs.
  var px; var py; // previous inputs.
  var rx = []; var ry = [];
  var range = this._getRange();
  var tickSize = this._getTickSize();
  for (idx = 0; idx < length; idx++) {
    cx = xs[idx];
    cy = ys[idx];
    if (!(_.isNumber(cx) && _.isNumber(cy))) { continue; }
    if (first) {
      // first point.
      px = cx; py = cy;
      rx.push(cx); ry.push(cy);
      first = false;
    } else {
      // second and more points.
      var ticks;
      var dx, dy; // delta x and y.
      var tx, ty; // tick x and y.
      dx = cx - px; dy = cy - py;
      if (!flip) {
        ticks = Math.floor(dy / range / tickSize);
      } else {
        ticks = Math.floor(dx / range / tickSize);
      }
      for (var j = 1; j < ticks; j++) {
        // sampled points.
        var delta = j / ticks;
        ty = delta * dy;
        tx = delta * dx;
        rx.push(px + tx);
        ry.push(py + ty);
      }
      px = cx; py = cy;
      // final endpoint.
      rx.push(cx); ry.push(cy);
    }
  }
  return {x: rx, y: ry}
};


})(gg);
;/**
 * Date : 1/10/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Abstraction on top of data.
 *
 * Serves similar purpose as R's Data frame object.
 *
 * Getters with get...() returns a copy.
 **/

;(function(gg) {
"use strict";

var _CACHE_NAMES = [
  'min', 'max', 'levels'
];

var _CACHE_STATS = {
  hit : 0,
  miss : 0
}

gg.data = u.makeClass('gg.data');

gg.data._CACHE_STATS = _CACHE_STATS

////////////////////////////////////////
// Metadata related methods
////////////////////////////////////////

var META_FIELDS = ['type','parser','format'];
// type - type of the variable.
// parser - javascript function responsible for parsing.
// format - string to generate parser from. different behavior depending on
//   type.

var copyMeta = function(metas) {
  var obj = {};
  _.each(metas, function(value, key) {
    obj[key] = copySingleMeta(value);
  });
  return obj;
}

var copySingleMeta = function(meta) {
  // if meta is a single string, then interpret it as a TYPE.
  if (_.isString(meta)) {
    return {
      type: meta,
      format: null,
      parser: null
    }
  }
  var obj = {};
  for (var idx = 0; idx < META_FIELDS.length; idx++) {
    var field = META_FIELDS[idx];
    var value = meta[field];
    if (value) { obj[field] = value; }
  }
  return obj;
}

var makeMeta = function(type, parser, format) {
  var obj = {};
  if (type) obj.type = type;
  if (parser) obj.parser = parser;
  if (format) obj.format = format;
  return obj;
}

////////////////////////////////////////
// "static" methods
////////////////////////////////////////
gg.data.fetch = function(url, callback, meta) {
  // fetch the data asynchronously.
  // sane way to do async.
  d3.text(url, function(text) {
    var data = null;
    if (/\.csv/.test(url)) {
      // csv parser.
      data = gg.data(text, meta);
    } else {
      var js = JSON.parse(text);
      data = gg.data(js, meta);
    }
    callback(data);
  });
};

gg.data.group = function(datas, groupfuncs, filterfunc) {
  // check filterfunc
  var self = this;
  if (!filterfunc) filterfunc = function() {return true;}
  // prepare the groupValue() function
  var groupValue;
  if (_.size(groupfuncs) === 0) {
    groupValue = function() { return '' };
  } else {
    groupValue = function(obj) {
      var str = ""; // this will represent the grp of an obj
      _.each(groupfuncs, function(fnc, key) { str += key+":"+fnc(obj[key])+";"; });
      return str;
    }
  }
  // no data
  if (datas.length === 0) return [];
  // var keys = datas[0].keys(); // assumed to all be the same... should i check?

  // actual work!
  var groupedRaw = {};
  _.each(datas, function(data) {
    for (var i = 0; i < data.len(); i++) {
      var obj = data._internal[i];
      if (filterfunc(obj)) {
        var grp = groupValue(obj);
        if (!groupedRaw[grp]) groupedRaw[grp] = [];
        groupedRaw[grp].push(obj);
      }
    }
  });
  groupedRaw = _.values(groupedRaw)
  return _.map(groupedRaw, function(d) { return datas[0].clone(d); });
}

////////////////////////////////////////
// Different constructors.
////////////////////////////////////////

gg.data.prototype.fromObject = function(data, keys) {
  // custruct from the data of the form :
  // {
  //   x : [...],
  //   y : [...],
  //   z : [...]
  // }

  keys = keys ? keys : _.keys(data);
  var lengths = _.map(keys, function(key) { return data[key].length; });
  var length = _.max(lengths);
  var processed = [];

  for (var i = 0 ; i < length; i++) {
    var obj = {};
    for(var j = 0 ; j < keys.length; j++) {
      var key = keys[j];
      var cell = data[key][i];
      if (typeof cell === 'undefined') { cell = null; }
      obj[key] = (i < lengths[j]) ? cell : null;
    }
    processed.push(obj);
  }

  this._unparsed = processed;
  this._keys = keys;
};

gg.data.prototype.fromArray = function(data, keys) {
  // constructor from the data of the form:
  // [
  //   {x : ..., y : ..., },
  //   {x : ..., y : ..., },
  //   ...
  // ]
  if (data.length === 0) {
    this._unparsed = [];
    keys = keys ? keys : [];
    this._keys = keys;
    return;
  }

  var providedKeys = _.keys(data[0]);
  keys = keys ? _.union(keys, providedKeys) : providedKeys;

  // we will want to handle missing data better later.
  for (var i = 1; i < data.length; i++) {
    for (var j = 0; j < keys.length; j++) {
      if (_.isUndefined(data[i][keys[j]])) {
        data[i][keys[j]] = null;
      }
    }
  }

  this._unparsed = data;
  this._keys = keys;
}

gg.data.prototype.fromGrid = function(data, keys, meta) {
  // constructor from the data of the form:
  // [
  //   [x, y, z],
  //   [x, y, z],
  //   ...
  // ]
  if (data.length === 0){
    this._unparsed = [];
    keys = keys ? keys : [];
    this._keys = keys;
    return;
  }
  // if keys don't exist, it's going to be array [0 ... N]
  keys = keys ? keys : _.keys(data[0]);
  var N = keys.length;
  this._unparsed = _.map(data, function(row) {
    var obj = {};
    for (var i = 0; i < N; i++) {
      obj[keys[i]] = _.isUndefined(row[i]) ? null : row[i];
    }
    return obj;
  });
  this._keys = keys;
}

gg.data.prototype.fromCSV = function(data, keys) {
  // construct from data of form:
  // "x,y,z
  //  1,1,1
  //  1,1,1
  //  ..."
  /*
  this._unparsed = d3.csv.parse(data);
  this._keys = _.keys(this._unparsed[0])
  for (var i = 0; i < this._unparsed.length; i++) {
    var obj = this._unparsed[i];
    _.each(this._keys, function(k) {
      var num = parseFloat(obj[k]);
      if (num == obj[k]) {
        obj[k] = num;
      }
    });
  }
  */
  var masterArray = d3.csv.parseRows(data);
  var topRow = masterArray[0];
  var currentInt = 0;
  var currentDigits = 0;
  var done = false;
    
  for (var i = 0;i < topRow.length; i++) {
    if (topRow[i] == "") {
      topRow[i] = "untitled";
    }
  }
  while (!done) {
    for (var i = 0;i < topRow.length; i++) {
      for (var j = 0;j < topRow.length; j++) {
        if (topRow[i] === topRow[j] && i != j) {
          if (!_.isNull(topRow[j].match(new RegExp("[_][1234567890]*$")))) {
            for (var k = topRow[j].length-1; topRow[j].charAt(k) >= 0 && topRow[j].charAt(k) <= 9; k--) {
              currentInt += topRow[j].charAt(k) * Math.pow(10, topRow[j].length-k-1);
              currentDigits++;
            }
            currentInt++;
            topRow[j] = topRow[j].substring(0, topRow[j].length-currentDigits) + "" + currentInt;
            currentInt = 0;
            currentDigits = 0;
          } else {
            topRow[j] = topRow[j] + "_1";
          }
        }
      }
    }
    done = true;
    for (var i = 0;i < topRow.length; i++) {
      for (var j = 0;j < topRow.length; j++) {
        if (topRow[i] === topRow[j] && i != j) {
          done = false;
        }
      }
    }
  }
  /*
  var nameSet = {}; // remembers the names that it's seen till now.
  var newNames = []; // mapping to new names.
  var MAX = topRow.length + 1;
  for (var i = 0; i < topRow.length; i++) {
    var key = topRow[i];
    if (nameSet[key]) {
      for (var number = 1;number<MAX;number++) {
        var newName = key + "_" + number;
        if (nameSet[newName]) {
          continue
        } else {
          nameSet[newName] = true;
          newNames[i] = newName;
          break;
        }
      }
    } else {
      nameSet[key] = true;
      newNames[i] = key;
    }
  }
  */
  this._unparsed = d3.csv.parse(d3.csv.format(masterArray));
  /*
  this._unparsed = []
  for (var i = 1; i < masterArray.length; i++) {
    var curRow = masterArray[i];
    var obj = {}
    for (var j = 0; j < topRow.length; j++) {
      var curCell = curRow[j];
      var curKey = newNames[j];
      if (!curCell) {
        curCell = null;
      }
      obj[curKey] = curCell;
    }
    this._unparsed.push(obj)
  }
  this._keys = newNames;*/
  this._keys = _.keys(this._unparsed[0])
  for (var i = 0; i < this._unparsed.length; i++) {
    // convert values to float.
    var obj = this._unparsed[i];
    _.each(this._keys, function(k) {
      var num = parseFloat(obj[k]);
      if (num == obj[k]) {
        obj[k] = num;
      }
    });
  }
};

gg.data.prototype.constructData = function(data, meta) {
  var metaProvided = false;
  var keys;
  if (_.isArray(meta)) {
    // meta is array of keys - type information still needs to be guessed.
    keys = _.clone(meta);
    meta = {};
  } else if (!meta) {
    // meta not provided - do the guessing.
    keys = null;
    meta = {};
  } else {
    keys = _.keys(meta);
    meta = copyMeta(meta);
    metaProvided = true;
  }
  if (_.isArray(data)) {
    if (data.length > 0 && _.isArray(data[0])) {
      this.fromGrid(data, keys, meta);
    } else {
      this.fromArray(data, keys, meta);
    }
  } else if (_.isString(data)) {
    this.fromCSV(data, keys, meta);
  } else {
    this.fromObject(data, keys, meta);
  }

  if (!metaProvided) {
    this._meta = {}
  } else {
    this._meta = meta;
    // assert the meta.
  }
  this.guessMeta();
}

gg.data.prototype.guessMeta = function() {
  var meta = this._meta;
  var self = this;
  _.each(this._keys, function(key) {
    if (meta[key] && meta[key].type) {
      return;
    }
    var type = self._guessType(key);
    meta[key] = makeMeta(type);
  });
  return meta;
}


////////////////////////////////////////
// the REAL constructor
////////////////////////////////////////
gg.data.prototype.init = function(data, meta) {
  var self = this;
  this._unparsed = null;
  this._internal = null;
  this._keys = null;
  this._meta = null;
  // contains cache.
  this._cache = null;

  if (!data) { // no data
    this._unparsed = [];
    this._internal = [];
    this._keys = [];
    this._meta = {};
  } else {
    this.constructData(data, meta);
    this._guessParsers();
    this._applyParsers();
  }
  var keylen = this._keys.length;
  this._clearCache();
};

gg.data.prototype.clone = function(array) {
  // clone the current gg.data's metadata.
  array = array || [];
  var data = new gg.data();
  data._keys = _.keys(this._meta);
  data._meta = _.clone(this._meta);
  data._internal = array;
  return data;
}

gg.data.prototype.copy = function() {
  return this.clone(this._internal);
}

gg.data.prototype.transform = function(key, transformation) {
  // transform the input to the given value.
  var output = _.map(this._internal, function(record) {
    var cRecord = _.clone(record);
    cRecord[key] = transformation(cRecord[key]);
    return cRecord;
  });
  return this.clone(output);
}

gg.data.prototype.niceNumber = function(key, rounding) {
  return this.transform(key, function(value) {
    return Math.floor(value / rounding) * rounding;
  });
}

gg.data.prototype.niceDate = function(key, rounding) {
  if (!_.isArray(rounding)) {
    rounding = [rounding];
  }
  return this.transform(key, function(value) {
    var v = new Date(0);
    if (_.isNumber(value)) {
      value = new Date(value)
    }
    _.each(rounding, function(name) {
      // getter
      var c = value['get' + name]();
      // setter
      v['set' + name](c);
    });
    return v - 0;
  });
}

////////////////////////////////////////
// getters
////////////////////////////////////////

gg.data.prototype.get = function(key, id) {
  if (arguments.length >= 2) {
    // obtains a single cell.
    var val = this._internal[id][key];
    return val;
  }
  // obtains a single column.
  var vals = _.pluck(this._internal, key);
  return vals;
}

gg.data.prototype.getObject = function(id) {
  var i, key;
  var obj = {};
  for(i = 0 ; i < this._keys.length; i++) {
    key = this._keys[i];
    obj[key] = this.get(key, id);
  }
  return obj;
};

gg.data.prototype.getObjects = function() {
  /** Return the list-of-object view of this data frame. */
  var result = [];
  for (var i = 0 ; i < this.len(); i++) {
    result.push(this.getObject(i));
  }
  return result;
}

gg.data.prototype.getRaw = function() {
  return this._internal;
}

gg.data.prototype.getBlock = function() {
  var result = [];
  var data = this._internal;
  var i;
  var meta = this._meta;
  var getfunc = function(k) {
    var type = meta[k].type;
    if (type !== 'date') {
      return data[i][k];
    } else {
      return +data[i][k]; // to integer.
    }
  }
  for (i=0; i<this._internal.length; i++) {
    result[i] = _.map(this._keys, getfunc);
  }
  return result;
}

gg.data.prototype.getTypeObj = function(key) {
  return gg.type.fromString(this.type(key));
}

gg.data.prototype.toCode = function(indent, fnIndent) {
  return u.toCode(indent, fnIndent, {
    'cls' : this._cls_name,
    'params' : [JSON.stringify(this.getBlock(), null, ' '),
                JSON.stringify(this._meta)]
    //funcs : ?
  });
}

////////////////////////////////////////
// helpers
////////////////////////////////////////

gg.data.prototype.len = function() {
  // returns the length of the data object.
  return this._internal.length;
}


gg.data.prototype.indices = function() {
  return _.range(this.len());
}

gg.data.prototype.keys = function() {
  return this._keys;
}

gg.data.prototype.hasKey = function(key) {
  return _.indexOf(this._keys, key) > -1;
}

gg.data.prototype.metas = function() {
  return _.clone(this._meta);
}

gg.data.prototype.getMeta = function(key) {
  return this._meta[key];
}

var badValues = function(x) {
  // null or undefined, or an empty string.
  return (x === null || typeof x === 'undefined' || x === '');
}

var isNumber = function(x) {
  return (
    _.isNumber(x) ||
    !_.isNaN(Number(x))
  )
}

gg.data.guessType = function(rawVals) {
  // this function should NEVER guess 'unknown',
  // because it screws things up.
  var vals = _.reject(rawVals, badValues);
  if (vals.length === 0) {
    return 'category';
  } else if (_.all(vals, _.isDate)) {
    return 'date'
  } else if (_.all(vals, isNumber)) {
    return 'number'
  } else {
    return 'category'
  }
}

gg.data.prototype._guessType = function(key) {
  var column = _.pluck(this._unparsed, key);
  return gg.data.guessType(column);
}

gg.data.prototype.type = function(key) {
  var meta = this._meta[key];
  return meta ? meta.type : 'unknown';
}

gg.data.prototype.levels = function(key_or_function) {
  return this._cached('levels', key_or_function,
    function(key) {
      var type = this.getTypeObj(key);
      var vals = _.chain(this._internal)
        .pluck(key)
        .reject(_.isUndefined)
        .reject(_.isNull)
        // .sortBy(type.represent)
        .sortBy(type.represent)
        .uniq(false, type.represent)
        .value();
      return vals;
    }
  , []);
}

gg.data.prototype.min = function(key_or_function) {
  return this._cached('min', key_or_function, 
    function(key) {
      var type = this.getTypeObj(key);
      var filter = type.validate;
      var query = type.min;
      return this.query(key, query, filter);
    }, undefined
  );
}

gg.data.prototype.max = function(key_or_function) {
  return this._cached('max', key_or_function,
    function(key) {
      var type = this.getTypeObj(key);
      var filter = type.validate;
      var query = type.max;
      return this.query(key, query, filter);
    }, undefined
  );
}

gg.data.prototype.query = function(key, queryFunction, filterFunction) {
  // query the given colunn of the data.
  return queryFunction(_.filter(this.get(key), filterFunction));
}

gg.data.prototype.remove = function(key) {
  // Removes the given key from the data.
  // returns true iff the removal is successful.
  var index = _.indexOf(this._keys, key)
  if (index === -1) {
    return false;
  }
  this._keys.splice(index, 1);
  delete this._meta[key];
  var i;
  var len = this._internal.length;
  for (i = 0; i < len; i++) {
    var d = this._internal[i];
    delete d[key];
  }
  return true;
}

gg.data.prototype.derive = function(fnString, newvarname, options) {
  // fnstring - function or setring.
  // options - dictionary of the following
  //   dryrun - (boolean) true if the new variable isn't going to be added for real.
  //   type - (string) type of the derived column.
  //   context - (object) context of global functions available for the derivation function.
  options = options || {};
  var dryrun = options.dryrun;
  var context = options.context;
  if (arguments.length === 1) {
    newvarname = _.uniqueId("var_");
  }
  // default context.
  if (!context) { context = gg.derive; }
  try {
    var compute;
    var hasFnString;
    if (_.isFunction(fnString)) {
      compute = fnString;
      hasFnString = false;
    } else {
      var modifiedFnString = fnString;
      if (fnString === '') {
        var modifiedFnString = '""';
      }
      // TODO - catch the error here.
      compute = new Function('d', 'with(this) { with(d) { return '+ modifiedFnString + ';}}');
      hasFnString = true;
    }
    var len = this.len();
    var values = [];
    for (var i = 0; i < len; i++) {
      var d = this._internal[i];
      var value = compute.call(context, d);
      if (_.isFunction(value)) {
        gg.error(121, 'invalud return value');
      }
      values.push(value);
      if (dryrun) {
        if (i > 10) break;
      } else {
        d[newvarname] = compute.call(context, d);
      }
    }
    if (dryrun) {
      return { success : true, values : values };
    }

    if (!_.include(this._keys, newvarname)) {
      this._keys.push(newvarname);
    }
    var type = null;
    if (options.type) { type = options.type; }
    else { type = gg.data.guessType(values); }

    this._meta[newvarname] = {
      type: type,
      derived: true
    };
    if (hasFnString) {
      this._meta[newvarname].formula = fnString;
    }
    // return the generated name.
    return newvarname;
  } catch (err) {
    if (dryrun) {
      return {success:false, error:err};
    }
    gg.warn(121, "Error while generating derived variable "+newvarname+": "+err.toString());
    return false;
  }
}

gg.data.prototype.checkRename = function(from, to) {
  // check whether rename() is possible.
  var fidx = _.indexOf(this._keys, from);
  var tidx = _.indexOf(this._keys, to);
  if (!to) {
    // prevent empty variable name.
    return false;
  } else if (fidx === -1) {
    // from var does not exist.
    return false;
  } else if (tidx !== -1) {
    // to var already exist.
    return false;
  }
  return true;
}
gg.data.prototype.rename = function(from, to) {
  // rename a given variable.
  from = from.toString();
  to = to.toString();
  if (!this.checkRename(from, to)) {
    return false;
  }
  var fidx = _.indexOf(this._keys, from);

  _.each(this._internal, function(obj) {
    obj[to] = obj[from];
    delete obj[from];
  });

  this._keys[fidx] = to;

  this._meta[to] = this._meta[from];
  delete this._meta[from]
  return true;
}

gg.data.prototype.renameMany = function(_map) {
  // TODO - run assertion.
  var self = this;
  var map = {};
  var failed = false;
  _.each(_map, function(to, from) {
    var toStr = to.toString();
    if (toStr == from) return
    if (!self.checkRename(from, to)) {
      failed = true;
    } else {
      map[from] = toStr;
    }
  });

  if (failed) {
    // rename fails.
    return false;
  }
  var vs = _.values(map);
  if (_.uniq(vs).length != vs.length) {
    // duplicate keys.
    return false;
  }

  _.each(this._internal, function(obj) {
    _.each(map, function(to, from) {
      obj[to] = obj[from];
      delete obj[from];
    });
  });

  _.each(map, function(to, from) {
    var fidx = _.indexOf(self._keys, from);
    self._keys[fidx] = to;
    self._meta[to] = self._meta[from];
    delete self._meta[from]
  });

  return true;
}
gg.data.prototype.copyColumnDefinition = function(from, key) {
  if (_.indexOf(this._keys, from) === -1 && _.indexOf(this._keys, key) !== -1) {
    return false; //from key doesn't exist.
  }
  data._keys.push(x_end);
  data._meta[x_end] = _.clone(data._meta[x]);
  return true;
}

////////////////////////////////////////
// setters
////////////////////////////////////////

gg.data.prototype.push = function(object) {
  /** Push the given object to the data frame. */
  var i, key;
  for(i = 0 ; i < this._keys.length; i++) {
    key = this._keys[i];
    if (!_.has(object, key)) {
      gg.warn(101, "Data is missing key "+key+".");
    }
  }
  // todo - should _unparsed be modified too?
  this._internal.push(object);
  return this;
}

////////////////////////////////////////
// operations on gg.data
////////////////////////////////////////

gg.data.prototype.iterator = function(filterfunc) {
  var self = this;
  var obj = {};
  obj.i = 0;
  obj.next = function() {
    var len = self.len();
    while (obj.i < len && !filterfunc(self._internal[obj.i])) {
      obj.i++;
    }
    if (obj.i == len) {
      return false;
    }
    return self._internal[obj.i++];
  }
  return obj;
}

gg.data.prototype.filter = function(filterfunc) {
  var newdata = [];
  filterfunc = gg.data.makeFilterFunction(filterfunc);
  try {
    _.each(this._internal, function(d) {
      if (filterfunc(d)) {
        newdata.push(d);
      }
    });
  } catch (err) {
    gg.error(122, "Error while filtering data: "+err.toString());
  }
  return this.clone(newdata);
}

gg.data.prototype.sort = function(key, des) {
  /**
   * Sort the given data, by the given key. Returns a new data.
   * des (bool) - if true, sort descending.
   */
  var type = this.getTypeObj(key);
  var newData;

  // multiple cases.
  if (!type.sort) {
    // 1. type has .sort(a, b) undefined - use _.sortBy() by type.represent.
    newData = _.sortBy(this._internal, function(x) {
      var value = type.represent(x[key]);
      return value;
    });
  } else {
    // 1. type has .sort(a, b) defined - use it to sort the array.
    var cloned = _.clone(this._internal);
    newData = cloned.sort(function(a,b) {
      var va = type.represent(a[key]);
      var vb = type.represent(b[key]);
      return type.sort(va, vb);
    });
  }
  if (des) {
    newData.reverse();
  }
  return this.clone(newData);
}

gg.data.prototype.group = function(groupfuncs) {
  // groupfuncs = { key : groupping-function, ... }
  return gg.data.group([this], groupfuncs);
}

gg.data.prototype.merge = function(otherData) {
  if (!_.isEqual(this.keys(), otherData.keys())) {
    gg.error(110, "Cannot merge two datasets with unequal keys.");
  }
  this._internal = this._internal.concat(otherData._internal)
  return this;
}

gg.data.prototype.each = function(iterator, sampleSize) {
  if (!sampleSize || sampleSize > this.len()) {
    return _.each(this._internal, iterator);
  } else {
    var shuffled = _.shuffle(this._internal);
    return _.each(shuffled.slice(0, sampleSize), iterator);
  }
}

////////////////////////////////////////
// Caching related functions
////////////////////////////////////////
gg.data.prototype._cached = function(cacheName, key_or_function, computeFunction, defaultValue) {
  // calls the computeFunction with the given key, unless it
  // has been already been called before - in that case, cached value
  // is returned
  var key;
  if (_.isFunction(key_or_function)) {
    var func = key_or_function;
    if (!func._data_key) {
      func._data_key = _.uniqueId('var_');
      // run the derivation.
      this.derive(func, func._data_key);
    }
    key = key_or_function._data_key;
  } else {
    key = key_or_function;
  }
  var idx = _.indexOf(this._keys, key);
  if (idx === -1) {
    // key isn't part of this gg.data object.
    // call the computeFunction without caching.
    return defaultValue;
    // return computeFunction.call(this, key);
  }

  if (_.has(this._cache[cacheName], key)) {
    // cached.
    var cached = this._cache[cacheName][key];
    _CACHE_STATS.hit++;
    return cached
  }
  _CACHE_STATS.miss++;
  // not cached
  var computed = computeFunction.call(this, key);
  this._cache[cacheName][key] = computed;
  return computed;
}

gg.data.prototype._clearCache = function() {
  this._cache = {};
  var cache = this._cache;
  var keylen = this._keys.length;
  _.each(_CACHE_NAMES, function(name) {
    cache[name] = {};
  });
}

////////////////////////////////////////
// Date / parser related functions.
////////////////////////////////////////
gg.data.prototype.parser = function(key, value) {
  if (arguments.length === 1) {
    return this._meta[key].parser;
  }
  this._meta[key].parser = value;
  return this;
}

var numberParser = function(format) {
  var regex = new RegExp(format);
  return function(x) {
    var value = regex.exec(x);
    var elem = value[1];
    return numberCoercer(elem);
  };
}

var numberCoercer = function(x) {
  var result = Number(x);
  if (x === null || (typeof x == 'undefined')) {
    return null;
  } if (x === '') {
    return null;
  }
  if (_.isNaN(result)) {
    return null;
  }
  return result;
}

gg.data.prototype._guessParsers = function() {
  var self = this;
  _.each(this._keys, function(key) {
    var meta = self._meta[key];

    if (self.parser(key)) {
      return; // parser already set.
    } else if (meta.type == 'number') {
      if (meta.format) {
        meta.parser = numberParser(meta.format);
      } else {
        meta.parser = numberCoercer;
      }
    } else if (meta.type == 'date') {
      if (meta.format) {
        var format = self._meta[key].format;
        meta.parser = gg.data.makeDateParser(format);
      } else {
        var column = _.pluck(self._unparsed, key);
        var format = gg.data.guessDateFormat(column);
        if (format) {
          meta.parser = gg.data.makeDateParser(format);
          meta.format = format;
        } else {
          meta.type = 'date'
          meta.parser = function(x) {
            return x;
            if (x && x.getTime) {
              return x.getTime();
            }
            return null;
          }
          meta.format = null;
        }
      }
    } else if (meta.type == 'category' && meta.format === null) {
      // coerce the given input to "category"
      meta.parser = gg.type.category.prototype.represent;
    } else {
      // coerce the given input to "category"
      meta.parser = gg.type.category.prototype.represent;
      // TODO(Jeeyoung Kim) - automatically guessing the type of the column is ... dangerous.
      var column = _.pluck(self._unparsed, key);
      // check for date
      var format = gg.data.guessDateFormat(column);
      if (format) {
        meta.type = 'date'
        meta.parser = gg.data.makeDateParser(format);
        meta.format = format;
      }
    }
  });
}

gg.data.prototype._applyParsers = function() {
  // apply the parser. Exceptions thrown by parsers are ignored.
  var self = this;
  var keys = this.keys();
  this._internal = _.map(this._unparsed, function(obj) {
    var result = {};
    var idx = 0;
    for (idx = 0; idx < keys.length; idx++) {
      var key = keys[idx];
      var meta = self._meta[key];
      var parser = meta.parser;
      var value = obj[key];
      var parsed;
      if (parser) {
        try { parsed = parser(value); }
        catch (e) { parsed = null; }
      } else {
        parsed = value;
      }
      result[key] = parsed;
    }
    return result;
  });
}

var ISO_FORMAT = '%Y-%m-%d %H:%M:%S';
var common_formats = [
  ISO_FORMAT,
  '%c',
  '%m-%d-%Y',
  '%Y-%m-%d',
  '%m/%d/%Y',
  '%Y/%m/%d',
  // '%m%d%Y',
  // '%d%m%Y',
  // '%Y',
  "%m/%d/%Y %I:%M %p"
];
gg.data.guessDateFormat = function(column) {
  // STATIC FUNCTION
  // determines whether the given column is a date or not.
  // var first = column[0] || "";
  var found = _.find(common_formats, function(format) {
    var good = true;
    var bad = true;
    for (var i = 0; i < column.length; i++) {
      var value = column[i];
      if (!value) {
        continue;
      } if (value && !_.isString(value)) {
        return false;
      }
      if (gg.date.parseDate(format, value) !== null)  {
        bad = false;
      } else {
        good = false;
        break;
      }
    }
    return good && !bad;
  });
  return found;
}

gg.data.makeDateParser = function(format) {
  // parse ISO format first.
  var fmt = d3.time.format.utc(format);
  return function(x) {
    // if (_.isNumber(x)) { return new Date(x); }
    if (_.isNumber(x)) { return x }
    var result;
    result = fmt.parse(x);
    if (result != null) {
      return result.getTime();
    }
    return null;
  }
}

gg.data.makeFilterFunction = function(string_or_function) {
  if (_.isFunction(string_or_function)) {
    return string_or_function;
  } else if (_.isString(string_or_function)) {
    return new Function('d', 'with(d) { return ' + string_or_function + ';}');
  }
  return function() { return true; };
}

// nice functions.
gg.data.prettify = u.prettify;

gg.data.numberRounder = function(rounding) {
  return function(value) {
    return Math.floor(value / rounding) * rounding;
  };
};

gg.data.dateRounder = function(rounding) {
  if (!_.isArray(rounding)) {
    rounding = [rounding];
  }
  return function(unnormalized) {
    var normalized = new Date(0);
    unnormalized = new Date(unnormalized)
    _.each(rounding, function(name_or_function) {
      if (_.isString(name_or_function)) {
        // assume name for name_or_function.
        var name = name_or_function;
        // getter
        var c = unnormalized['get' + name]();
        // setter
        normalized['set' + name](c);
      } else {
        // assume function for name_or_function.
        var func = name_or_function;
        func(normalized, unnormalized);
      }
    });
    return normalized - 0;
  }
}

// expose some of the functionality in d3.csv
gg.data.parseCSV = d3.csv.parseRows

})(gg);
;/**
 * Date: 3/8/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Utility function for date.
 **/
;(function() {
'use strict';
gg.date = {};

gg.date.parseDate = function(format, str) {
  if (!str) return null;
  return d3.time.format.utc(format).parse(str);
}

gg.date.formatDate = function(format, date) {
  if (!date) return '';
  if (_.isNumber(date)) {
    date = new Date(date);
  }
  return d3.time.format.utc(format)(date);
}
})();
;;(function(gg) {
"use strict";

// functions used in gg.data.derive() function
gg.derive = {};

gg.derive.year = function(date) {
  date = new Date(date);
  return date.getUTCFullYear();
}

gg.derive.month = function(date) {
  date = new Date(date);
  return date.getUTCMonth() + 1;
}

gg.derive.day = function(date) {
  date = new Date(date);
  return date.getUTCDate();
}

gg.derive.has = function(text, substring) {
  // convert to string.
  text = "" + text;
  substring = "" + substring;
  return _.indexOf(text, substring) > -1;
}

gg.derive.len = function(data) {
  if (_.isString(data)) {
    return data.length;
  }
  return 0;
}

/**
 * Count the # of occurance of "input".
 */
gg.derive.count = function(data, input) {
  if (!_.isString(data)) {
    return 0
  }
  var result = 0;
  for (var i = 0; i < data.length; i++) {
    if (data.charAt(i) == input) {
      result++;
    }
  }
  return result;
}

})(gg);
;/**
 * Date : 1/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

;(function(gg){
"use strict";

gg.facet.grid = u.makeClass('gg.facet.grid', gg.facet.base);

gg.facet.grid.prototype.init = function(x, y) {
  gg.facet.base.prototype.init.call(this);
  this.opts('x', x);
  this.opts('y', y);

  this.opts('col', null);
  this.opts('row', null); 
  // Caches.
  this._xlevels = null;
  this._ylevels = null;
  this._key_x;
  this._key_y;
};

gg.facet.grid.prototype.x = u.singleOpts('x');
gg.facet.grid.prototype.y = u.singleOpts('y');

gg.facet.grid.prototype.ncol = function(col) {
  // use as getter
  if (arguments.length === 0) {
    return this.opts('col');
  }
  // setter
  u.assertNumber(col);
  this.opts('col', col);
  return this;
};

gg.facet.grid.prototype.nrow = function(row) {
  // use as getter
  if (arguments.length === 0) {
    return this.opts('row');
  }
  // setter
  u.assertNumber(row);
  this.opts('row', row);
  return this;
};

gg.facet.grid.prototype.isValidIndex = function(facetIndex) {
  return true;
};

gg.facet.grid.prototype.bin = function(obj) {
  return (
    _.indexOf(this._ylevels, obj[this._key_y]) * this.opts('col') +
    _.indexOf(this._xlevels, obj[this._key_x])
  );
};

gg.facet.grid.prototype.prepare = function() {
  var key_x = this.x(); var key_y = this.y();
  if (!key_x && !key_y) {
    gg.error(701, "There are no variables to facet on.")
  }
  var nrow, ncol;


  var xlevels = this._graph.levels(key_x, 'data')
  var ylevels = this._graph.levels(key_y, 'data')

  this.opts('col', xlevels.length)
  this.opts('row', ylevels.length)

  this._xlevels = xlevels;
  this._ylevels = ylevels;
  this._key_x = key_x;
  this._key_y = key_y;

  return this;
}

gg.facet.grid.prototype.renderLabel = function(paper, context) {
  var labelX = this._xlevels[context.col];
  var labelY = this._ylevels[context.row];
  var label = labelX + " " + labelY;

  var elt = paper.text();

  elt.attr("font-size", 12)
  elt.attr("font-weight","bold")
  elt.attr("text", label)

  if (this.opts('col') == 1) {
    // put it on the right
    elt.attr("x", context.width + 10)
       .attr("y", context.ypos + context.eachHeight/2)
       .transform('r90');
  } else {
    // put it at the top
    elt.attr("x", context.xpos + context.eachWidth/2)
       .attr("y", context.ypos - 10);
  }
  return this;
};

})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

;(function(gg) {
"use strict";

gg.facet.wrap = u.makeClass('gg.facet.wrap', gg.facet.base);

gg.facet.wrap.prototype.init = function(x) {
  gg.facet.base.prototype.init.call(this);
  this.opts('x', x);
  // user defined
  this.opts('col', null);
  this.opts('row', null); 
  this.opts('formatter', null);
  // cache.
  this._key = null;
};

gg.facet.wrap.prototype.x = u.singleOpts('x')

gg.facet.wrap.prototype.ncol = function(col) {
  // use as getter
  if (arguments.length === 0) {
    return this.opts('col');
  }
  // setter
  u.assertNumber(col);
  this.opts('col', col);
  return this;
};

gg.facet.wrap.prototype.nrow = function(row) {
  // use as getter
  if (arguments.length === 0) {
    return this.opts('row');
  }
  // setter
  u.assertNumber(row);
  this.opts('row', row);
  return this;
};

gg.facet.wrap.prototype.isValidIndex = function(facetIndex) {
  return (facetIndex < this._graph.levels(this.x(), 'data').length);
};


gg.facet.wrap.prototype.bin = function(obj) {
  return _.indexOf(this._levels, obj[this._key]);
};

gg.facet.wrap.prototype.prepare = function() {
  var key = this.x();
  if(!key) {
    gg.error(701, "There are no variables to facet on.")
  }
  var levels = this._graph.levels(key, 'data')
  var nlevels = levels.length;

  var ncol, nrow;
  if (this.opts('col')) {
    // set the col first
    ncol = this.opts('col') || 3; //default = 3 cols
    nrow = this.opts('row') || Math.ceil(nlevels / ncol);
  } else {
    // set the row first
    nrow = this.opts('row') || 2; /// dfeault = 2 cols
    ncol = this.opts('col') || Math.ceil(nlevels / nrow);
  }
  this.opts('col', ncol);
  this.opts('row', nrow);

  // private variables.
  this._levels = levels;
  this._key = key;
  return this;
}

gg.facet.wrap.prototype.renderLabel = function(paper, context) { 
  var idx = context.row * this.ncol() + context.col;
  var label = this._levels[idx];
  if (label === null || _.isUndefined(label)) return this;
  var formatter = this.opts('formatter');
  if (!formatter) {
    formatter = function(x) { return x + ""; }
  }

  var elt = paper.text();

  elt.attr("font-size", 12)
  elt.attr("font-weight","bold")
  elt.attr("text", formatter(label))

  if (this.opts('col') == 1) {
    // put it on the right
    elt.attr("x", context.width + 10)
       .attr("y", context.ypos + context.eachHeight/2)
       .transform('r90');
  } else {
    // put it at the top
    elt.attr("x", context.xpos + context.eachWidth/2)
       .attr("y", context.ypos - 10);
  }
  return this;
};

})(gg);
;;;(function(gg){
"use strict";

gg.graph.prototype.type = function(key, queryType, facetId) {
  if (this._layers.length === 0 && queryType == 'data') {
    return this.data().type(key);
  }
  var result = _.invoke(this._layers, 'type', key, queryType, facetId);
  return u.unionType(result);
}

gg.graph.prototype.min = function(key, queryType, facetId) {
  if (this._layers.length === 0 && queryType == 'data') {
    return this.data().min(key);
  }
  var result = _.invoke(this._layers, 'min', key, queryType, facetId);
  var type = this.type(key, queryType);
  var typeObj = gg.type.fromString(type);
  return typeObj.min(result);
};

gg.graph.prototype.max = function(key, queryType, facetId) {
  if (this._layers.length === 0 && queryType == 'data') {
    return this.data().max(key);
  }
  var result = _.invoke(this._layers, 'max', key, queryType, facetId);
  var type = this.type(key, queryType);
  var typeObj = gg.type.fromString(type);
  return typeObj.max(result);
};

gg.graph.prototype.levels = function(key, queryType, facetId) {
  if (this._layers.length === 0 && queryType == 'data') {
    return this.data().levels(key);
  }
  var result = _.invoke(this._layers, 'levels', key, queryType, facetId);
  var type = this.type(key, queryType);
  var typeObj = gg.type.fromString(type);
  return u.mergeArrays(result, typeObj.represent);
};

})(gg);
;(function(gg) {
'use strict';

// Brought some rendering-related functions into this file.

gg.graph.prototype._setupGrid = function() {
  var coord = this.coord();
  var scales = this._scales;
  var grid = gg.guide.grid(scales.x, scales.y);
  if (coord._cls_name === 'gg.coord.polar') {
    grid.opts('render-vertical', true);
  }
  _.each(this._attr, function(val, key) {
    if (key.substring(0, 5) == "grid-" && !_.isNull(val))  {
      grid.opts(key.substring(5), val);
    }
  });
  return grid;
}

gg.graph.prototype._setupAxes = function() {
  var coord = this.coord();
  var scales = this._scales;
  // generate the gg.guide.axis objects
  var flip = (coord._flip !== (coord._cls_name === 'gg.coord.polar'));
  var x = flip ? 'y' : 'x';
  var y = flip ? 'x' : 'y';
  // set the x- and y- axis
  var xaxis = gg.guide.axis(this._scales[x], 'x', coord)
  var yaxis = gg.guide.axis(this._scales[y], 'y', coord)
  // change some default options to better default options
  if (coord._cls_name === 'gg.coord.polar') {
    yaxis.opts('line', true);
  }
  // set user options
  _.each(this._attr, function(val, key) {
    var begin = key.substring(0, 7)
    if (begin  == "axis-x-" && !_.isNull(val))  {
      xaxis.opts(key.substring(7), val);
    } else if (begin == "axis-y-" && !_.isNull(val))  {
      yaxis.opts(key.substring(7), val);
    } else if (begin.substring(0, 5) == "axis-") {
      // apply to both!
      xaxis.opts(key.substring(5), val);
      yaxis.opts(key.substring(5), val);
    }
  });
  var result = {'x': xaxis, 'y': yaxis, 'flip': flip};
  this._axes = result;
  return result;
}

gg.graph.prototype._renderAxis = function(axes, context) {
  var self = this;
  var paper = this._paper;
  var coord = this.coord();
  var ctx; // used to GIVE context to axis rendering...
  var x = axes.flip ? 'y' : 'x';
  var y = axes.flip ? 'x' : 'y';

  // render y-axis
  var offset;
  var position = this.opts('axis-y');
  if ((position == "left" && context.col === 0) ||
      (position == "right" && context.col === context.ncol-1) ||
      context.free_y) {
    offset = this.getAxisOffset(context.row, context.col, position);
    ctx = {
      position : position,
      coord : coord,
      canvas : self.createOffsetCoord(offset.x, offset.y)
    };
    axes.y.renderLinear(ctx);
  }

  // render x- or circular-axis
  position = this.opts('axis-x')
  if (position == "none") {
    // pass
  } else if (coord._cls_name === 'gg.coord.polar') {
    offset = this.getAxisOffset(context.row, context.col, 'circular');
    ctx = {
      position : 'circular',
      coord : coord.differentOffset(context.xpos, context.ypos),
      radius : this._scales[y].range()[1],
      canvas : self.createOffsetCoord(offset.x, offset.y)
    };
    axes.x.renderCircular(ctx);
  } else {
    offset = this.getAxisOffset(context.row, context.col, position);
    ctx = {
      position : position,
      coord : coord,
      canvas : self.createOffsetCoord(offset.x, offset.y)
    };
    // render x-axis
    if ((position=="bottom" && context.row == context.nrow - 1) ||
        (position=="top" && context.row === 0) ||
        context.free_x) {
      axes.x.renderLinear(ctx);
    } else {
      // render x-axis with line only
      axes.x.renderLinear(ctx, {labels:false});
    }
  }
};

gg.graph.prototype.renderPrimary = function(layerErrors) {
  var dims = this.dimensions();
  var facet = this._facet;
  var ncol = dims.ncol,
      nrow = dims.nrow,
      facetIndex = 0;
  var xpos, ypos; // in pixels
  var coord = this.coord();
  var self = this;

  // SET UP GRIDS AND AXES
  var grid = this._setupGrid();
  var axes = this._axes;

  // STUFF TO DO WITH SCALES THAT MAY NEED TO BE RESET
  var scales = this._scales;
  var free_x = facet ? facet.opts('free_x') : false;
  var free_y = facet ? facet.opts('free_y') : false;

  var resetDomain = function(key, facetIndex) {
    // set domain
    scales[key].make(facetIndex);
    // set grid (is this necessary?)
    grid.opts(key+'scale', scales[key]);
    // set axis (is this necessary?)
    var axisKey = (axes.flip == (key == 'x')) ? 'y' : 'x';
    axes[axisKey].scale(scales[key]);
  }

    if (this._timer) this._timer.mark('renderPrimary - pre-rendering()')
  // LOOP OVER ALL FACETS:
  for (var i=0; i<nrow; i++) {
    for (var j=0; j<ncol; j++) {
      // break out if there is no more facets to plot:
      if (facet && ! facet.isValidIndex(facetIndex)) { break; }
      // set up positions:
      xpos = this.xposition(j);
      ypos = this.yposition(i);

      // set up scales:
      if (free_x) { resetDomain('x', facetIndex); }
      if (free_y) { resetDomain('y', facetIndex); }
      // render grid
      var gridCoord = coord.differentOffset(xpos, ypos).opts('mouseover_highlight', false);
      grid.render(gridCoord);
      if (this._timer) this._timer.mark('renderGrid()')

      // render layer
      for (var k=0; k < this._layers.length; k++) {
        if (layerErrors && layerErrors[k]) continue;
        this.renderLayer(this.getLayer(k), xpos, ypos, scales, facetIndex);
        if (this._timer) this._timer.mark('renderLayer()')
      }

      // render axis
      this._renderAxis(axes, {'col':j, 'row':i, 'ncol':ncol, 'nrow':nrow,
                              'xpos':xpos, 'ypos':ypos,
                              'free_x': free_x, 'free_y': free_y});
      if (this._timer) this._timer.mark('renderAxis()')
      facetIndex++;
    }
  }
}

gg.graph.prototype.renderLayer = function(layer, xOffset, yOffset, scales, facetIndex) {
  // **** RENDER EACH LAYER
  var context = {
    rawScales: scales,
    // generate a new coordinate, with the provided offset.
    coord: this._coord.differentOffset(xOffset, yOffset),
    facetIndex : facetIndex
  };
  layer.renderEntry(context);
}


gg.graph.prototype.renderAllFacetLabel = function() {
  var dims = this.dimensions();
  var ncol = dims.ncol,
      nrow = dims.nrow,
      spacingY    = dims.spacingY;
  if (!(nrow > 1 || ncol > 1)) {
    return;
  }

  var context = {
    eachWidth: dims.eachWidth,
    width: dims.chartWidth + dims.paddingLeft,
    eachHeight: dims.eachHeight
  }
  for (var i=0; i<nrow; i++) {
    for (var j=0; j<ncol; j++) {
      context.row = i;
      context.col = j;
      context.ypos = this.yposition(i);
      context.xpos = this.xposition(j);
      var label = this._facet.renderLabel(this._paper, context);
    }
  }
};

gg.graph.prototype.renderLegend = function() {
  var position = this.opts("legend-position");
  if (position == "none") {
    return;
  }
  var dims = this.dimensions();
  var chartWidth = dims.chartWidth;
  var chartHeight = dims.chartHeight;
  var xpos, ypos;

  if (position == "left" || position == "right") {
    ypos = dims.paddingTop;
    xpos = 10;
    if (position=="right") {
      xpos += dims.paddingLeft +chartWidth+10; // 10 for facet label
    }
  }
  else if (position == "bottom") {
    ypos = chartHeight+dims.paddingTop+45 //100; //dims.paddingTop+chartHeight; //add some for axis
    xpos = dims.paddingLeft;
  } else {
    gg.error(1000, "Leged position should be left, right, bottom or none. Got "
                   +position+" instead.");
  }

  var context = {
    canvas : this.createOffsetCoord(xpos, ypos),
    chartWidth: chartWidth,
    chartHeight: chartHeight
  };
  this._legend.render(context)
};

gg.graph.prototype.renderOtherLabel = function() {
  var dims = this.dimensions();
  var chartWidth = dims.chartWidth;
  var chartHeight = dims.chartHeight;
  // y-label
  if (this._coord._name === 'polar') {
    // FIXME(JEE) - THIS IS HACK FOR POLAR COORDINATES. Remove it later.
  }
  else {
    this.render_y_label();
    this.render_x_label();
  }
  this.render_title();
}

/* @TODO: these should be movd to COORDS */
gg.graph.prototype.render_label = function(text, xpos, ypos, cssclass) {
  var element = this._paper.text(xpos, ypos, text).attr('class', cssclass);
  this._doms[cssclass] = element;
  return element;
}

gg.graph.prototype.render_title = function() {
  var dims = this.dimensions();
  var xpos = this.opts("width")/2;
  var ypos = 15;
  this.render_label(this.opts("title"), xpos, ypos, '_debug_title')
        .attr('font-weight', this.opts('title-bold') ? 'bold' : 'normal')
        .attr('font-size', this.opts('title-size'));
}

gg.graph.prototype.render_x_label = function() {
  var dims = this.dimensions();
  var xpos = dims.paddingLeft + dims.chartWidth/2;
  var ypos = dims.xLabelY;
  if (this.coord()._cls_name === 'gg.coord.polar') {
    var key = this._coord._flip ? 'x' : 'y';
  }
  else {
    var key = this._coord._flip ? 'y' : 'x';
  }
  this.render_label(this._varlabel(key), xpos, ypos, '_debug_x_label')
        .attr('font-weight', this.opts('label-bold') ? 'bold' : 'normal')
        .attr('font-size', this.opts('label-size'));
};

gg.graph.prototype.render_y_label = function() {
  var dims = this.dimensions();
  var chartHeight = dims.chartHeight;
  var xpos = dims.yLabelX
  var ypos = dims.paddingTop+chartHeight/2;
  if (this.coord()._cls_name === 'gg.coord.polar') {
    var key = this._coord._flip ? 'y' : 'x';
  }
  else {
    var key = this._coord._flip ? 'x' : 'y';
  }
  this.render_label(this._varlabel(key), xpos, ypos, '_debug_y_label')
        .transform('r270')
        .attr('font-weight', this.opts('label-bold') ? 'bold' : 'normal')
        .attr('font-size', this.opts('label-size'));
};

gg.graph.prototype.render_branding = function() {
  var elem = this._paper;

// will not currently display with pivot tables -- part of the reason may be no canvas exists
  var ypos = this.opts('height') - 6;
  var xpos = 65

  var a = elem.path(u.d3_arc(xpos+17,ypos+1,0,4,-Math.PI / 2,Math.PI * 1 / 6))
    .attr("fill", "#F89E34")
    .attr("stroke", "#F89E34");

  var b = elem.path(u.d3_arc(xpos+17,ypos+1,0,5,Math.PI * 1 / 6,Math.PI * 5 / 6))
    .attr("fill", "#FFF425")
    .attr("stroke", "#FFF425");

  var c = elem.path(u.d3_arc(xpos+17,ypos+1,0,6.5,Math.PI * 5 / 6 ,Math.PI * 9 / 6))
    .attr("fill", "#6DBB58")
    .attr("stroke", "#6DBB58");

  var t = elem.text(xpos, ypos, "Made With P o lychart")
    .attr({"font-size": 12, "font-weight": "bold", "font-family": "Arial, sans-serif"})
    .attr("fill", "#AAA")
	.toBack();
}

})(gg);
;"use strict";
// Author : Jeeyoung Kim
// Scale getter / setter, and other scale related methods
// for gg.graph object.

gg.graph.prototype.getScaleKeys = function() {
  return _.keys(this._scales);
}

gg.graph.prototype.removeScale = function(key) {
  if (_.has(this._scales, key)) {
    delete this._scales[key];
    return true;
  }
  return false;
}

gg.graph.prototype.removeAllScales = function() {
  this._scales = {}
}

gg.graph.prototype.getScale = function(key) {
  return this._scales[key]
}

gg.graph.prototype.scale = function(key, scale) {
  // Setter for the given scale.
  u.assertAes(key);
  scale = u.instantiate(scale);
  if (!scale) {
    gg.error(201, "Attempting to add an undefined or malformed scale: "+scale)
  }

  var cloned = u.cloneobj(scale);
  cloned.attach(this, key);
  this._scales[key] = cloned;

  return this;
}

gg.graph.prototype.resetScale = function(aes) {
  // reset the given scale, with the defautl scale.
  // returns true if the default scale can be generated.
  var defaultScaleMap = this.makeDefaultScales([aes]);
  var scale = defaultScaleMap[aes];
  if (scale) {
    this.scale(aes, scale);
    this.computeScale();
    return true
  } else {
    return false;
  }
}


gg.graph.prototype.makeDefaultScales = function(toMake) {
  // generate missing scales.
  var self = this;
  var scales = this._scales;
  if (!toMake) {
    toMake = _.chain(this._layers)
      .map(function(l) { return _.keys(l.getMap()) })
      .flatten()
      // X and Y scales should always be present.
      .push('x').push('y')
      .uniq()
      // groups & derived aesthetics don't need scales.
      .filter(function(aes) {
        if (u.isDerivedAes(aes)) {
          return false;
        }
        var base = u.getBaseAes(aes);
        if (base == 'group') {
          return false;
        }
        return true;
      })
      // those scales are already set.
      .reject(function(aes) { return _.has(scales, aes); })
      .value()
}

  var output = {};
  _.each(toMake, function(aes) {
    var type = self.type(aes);
    var typeObj = gg.type.fromString(type);
    var scale;
    if (!type) return;
    if (type === 'unknown') {
      scale = gg.scale.id();
    } else {
      scale = typeObj.defaultScale(aes);
    }
    output[aes] = scale;
  });

  // X and Y should be continuous, if they don't exist.
  if (!this._scales.x && !output.x && _.contains(toMake, 'x')) { output.x = gg.scale.discrete() }
  if (!this._scales.y && !output.y && _.contains(toMake, 'y')) { output.y = gg.scale.continuous() }

  return output;
}

gg.graph.prototype.bindDerivedScales = function() {
  // Scale for X_.* should reference the scale for X.
  var s = this._scales;
  var values = this.getMapKeys();
  _.each(values, function(aes) {
    if (u.isDerivedAes(aes)) {
      s[aes] = s[u.getBaseAes(aes)];
    }
  });
}

gg.graph.prototype.computeScale = function() {
  // compute the domain / range of the scale using the coordinates.
  var scales = this._scales;
  var dims = this.dimensions();
  this._coord.configScale({x:0,y:0,width:dims.eachWidth,height:dims.eachHeight}, scales);
  _.each(scales, function(scale, aes) {
    if (!u.isDerivedAes(aes)) {
      scale.make()
    }
  });
}
;;/**
 * Date : 2/1/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * Author: Lisa Zhang
 **/

;(function(gg) {
"use strict";

gg.guide.axis = u.makeClass('gg.guide.axis', gg.guide.base);

gg.guide.axis.prototype.init = function(scale, type, coord) {
  gg.guide.base.prototype.init.call(this);
  this._type = type || scale._aes;
  if (this._type != "x" && this._type != "y") {
    gg.error(500, "Axis can only be created from x- or y- aesthetics, got "+this._type+" instead.");
  }
  this._scale = scale;
  this._coord = coord;
  this._flip = type == 'y' && coord._cls_name == 'gg.coord.polar';

  this._attr = u.cloneobj(gg.opts.axis);
  if (this._type == 'x') {
    _.extend(this._attr, gg.opts.axis_x)
  } else if (this._type == 'y') {
    _.extend(this._attr, gg.opts.axis_y)
  }
}

gg.guide.axis.prototype.width = function() {
  return this._scale.maxLabelWidth()
}

gg.guide.axis.prototype.scale = function(s) {
  this._scale = s;
  return this;
}

/*
 * Renders an x, y, or r-axis. Basically any axis that is linear.
 *
 * @context.position: should be one of "top", "bottom", "left", "right"
 * @context.canvas: cartesian coordinate with the correct offset transformation applied.
 * @context.coord: original coordinate of the graph.
 */
gg.guide.axis.prototype.renderLinear = function(context, render) {
  var canvas = context.canvas;
  var position = context.position;
  // constants 
  var XAXIS = (position == "top" || position == "bottom");
  var YAXIS = (position == "left" || position == "right");
  var ANCHOR = XAXIS ? "middle" : (position == "left") ? "end" : "start";
  var TEXTX = XAXIS ? 0 : (position == "left") ? -10 : 10;
  var TEXTY = YAXIS ? 0 : (position == "top") ? -10 : 15;
  var TICKLEN = XAXIS ? this.opts('ticklength-x') : this.opts('ticklength-y');
  var FONTSIZE = this.opts('fontsize');
  var COLOR = this.opts('color');
  var STROKEWIDTH = this.opts('strokewidth');
  if (!render) {
    render = {
      line : true,
      ticks : true,
      labels : true
    };
  }
  // check sanity
  if (!(XAXIS || YAXIS)) {
    gg.error(501, "Position should be 'top', 'bottom', 'left', or 'right'. Got "+position+" instead.")
  }
  if ((XAXIS && this._type !="x")) {
    gg.error(501, "Position should be 'top' or 'bottom'. Got "+position+" instead.")
  }
  if ((YAXIS && this._type !="y")) {
    gg.error(501, "Position should be 'left', or 'right'. Got "+position+" instead.")
  }
  // draw the axis line
  var x = [0, 0], y = [0, 0];
  if (XAXIS) {
    x = this._scale.range();
  } else {
    y = this._scale.range();
  }
  if (this.opts('line') && render.line !== false) {
    // we should NOT need coordinate abstraction here
    canvas.line().attr('func', {
      'x1' : x[0], 'x2': x[1],
      'y1' : y[0], 'y2': y[1],
      'stroke': COLOR,
      'stroke-width': STROKEWIDTH
    }).attr('data', {});
  }
  // generate ticks
  var ticks = this._scale.ticks(null, this._flip)
  // the following is a slight hack.
  // it has the effect of flipping the axis, without flipping the text
  if (this._flip) {
    var max = _.max(this._scale.range());
    _.each(ticks, function(t) {
      t.pos = max - t.pos;
    });
  }
  // draw ticks & labels
  if (this.opts('ticks') && render.ticks !== false) {
    _.each(ticks, function(data) {
      canvas.line().attr('func', {
        x1 : function(t) { return XAXIS ? t.pos : 0; },
        x2 : function(t) { return XAXIS ? t.pos : (position=="left" ? -TICKLEN: TICKLEN); },
        y1 : function(t) { return YAXIS ? t.pos : 0; },
        y2 : function(t) { return YAXIS ? t.pos : (position=="top" ? -TICKLEN: TICKLEN); },
        'stroke' : COLOR,
        'stroke-width' : STROKEWIDTH
      }).attr('data', data);
    })
  }
  if (this.opts('labels') && render.labels !== false) {
    _.each(ticks, function(data) {
      canvas.text().attr('func', {
        x : function(t) { return XAXIS ? t.pos : TEXTX; },
        y : function(t) { return YAXIS ? t.pos : TEXTY; },
        text : function(t) { return String(t.label) },
        'font-size' : FONTSIZE,
        'font-color' : COLOR,
        'text-anchor': ANCHOR
      }).attr('data', data);
    })
  }
}

/*
 * Renders a circular axis, i.e. for theta in polar coords
 *
 * @context.position: always 'circular'
 * @context.canvas: cartesian coordinate with the correct offset transformation applied.
 * @context.coord: original coordinate of the graph.
 * @context.radius: radius of the circular axis.
 */

gg.guide.axis.prototype.renderCircular = function(context, render) {
  var coord = context.coord;
  var radius = context.radius;

  var TICKLEN = this.opts('ticklength-y');
  var FONTSIZE = this.opts('fontsize');
  var COLOR = this.opts('color');
  var STROKEWIDTH = this.opts('strokewidth');
  render = render || {
    line: true,
    ticks : true,
    labels : true
  };

  var hline, vline, x, y, x1, x2, y1, y2;
  if (coord._flip) {
    hline = _.bind(coord.vline, coord);
    vline = _.bind(coord.hline, coord);
    x = "y"; x1 = 'y1'; x2 = 'y2';
    y = "x"; y1 = 'x1'; y2 = 'x2';
    
  } else {
    hline = _.bind(coord.hline, coord);
    vline = _.bind(coord.vline, coord);
    x = "x"; x1 = 'x1'; x2 = 'x2';
    y = "y"; y1 = 'y1'; y2 = 'y2';
  }

  if (this.opts('line') && render.line !== false) {
    // draw the axis.
    var func = {
      'stroke': COLOR,
      'stroke-width': STROKEWIDTH
    }
    func[x] = u.constfunc(radius);
    func[y1] = u.constfunc(0);
    func[y2] = u.constfunc(360);
    vline().attr('func', func).attr('data', {});
  }

  var ticks = this._scale.ticks(null)
  if (this._scale.CONTINUOUS) {
    ticks.pop() // remove the last element. this is because last elt and first
                // elt are in the same place...
  }

  if (this.opts('ticks') && render.ticks !== false) {
    var func = {
      'class': 'labeltick',
      'stroke': COLOR,
      'stroke-width': STROKEWIDTH
    };
    func[x1] = u.constfunc(radius);
    func[x2] = u.constfunc(radius + TICKLEN);
    func[y]  = function(t) { return t.pos }
    _.each(ticks, function(tick){
      hline().attr('func', func).attr('data', tick);
    });
  }

  if (this.opts('labels') && render.labels !== false) {
    var func = {
      'text' : function(t) { return t.label; },
      'font-size' : u.constfunc(FONTSIZE),
      'text-anchor' : u.constfunc('middle'),
      'font-color' : u.constfunc(COLOR)
    };
    func[x] = u.constfunc(radius + TICKLEN + 10);
    func[y]  = function(t) { return t.pos }
    _.each(ticks, function(tick) {
      coord.text().attr('func', func).attr('data', tick);
    });
  }
}
})(gg);
;/**
 * Date : 2/8/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * Author: Lisa Zhang
 **/

;(function(gg) {
"use strict";

gg.guide.grid = u.makeClass('gg.guide.grid', gg.guide.base);

gg.guide.grid.prototype.init = function(xscale, yscale) {
  gg.guide.base.prototype.init.call(this);
  this._attr = u.cloneobj(gg.opts.grid); // defaults
  this.opts('xscale', xscale);
  this.opts('yscale', yscale);
}

/**
 * Render the given guide.
 * @coord - coordinate to render the guides.
 */
gg.guide.grid.prototype.render = function(coord) {
  var self = this;
  var flip = (coord._flip !== (coord._cls_name === 'gg.coord.polar'));
  var xticknum = null, yticknum = null;

  // special logic for polar coordinate.
  if (coord._cls_name == 'gg.coord.polar') {
    if (coord._flip) { xticknum = 6 }
    else { yticknum = 6 }
  }

  var xscale = this.opts('xscale')
  var xrange = xscale.range();
  var xmin = _.min(xrange);
  var xmax = _.max(xrange);
  var xticks = xscale.ticks(xticknum, flip);

  var yscale = this.opts('yscale')
  var yrange = yscale.range();
  var ymin = _.min(yrange);
  var ymax = _.max(yrange);
  var yticks = yscale.ticks(yticknum, flip);

  if (this.opts('render-vertical')) {
    _.each(xticks, function(data) {
      coord.vline().attr('func', {
        "x": function(t) { return xscale.apply(t.data) },
        "y1": u.constfunc(ymin),
        "y2": u.constfunc(ymax),
        "stroke": self.opts('stroke'),
        "stroke-width": self.opts('strokewidth'),
        "stroke-dasharray": self.opts('dasharray'),
        "stroke-dashoffset": self.opts('dashoffset')
      }).attr('data', data);
    });
  }

  if (this.opts('render-horizontal')) {
    _.each(yticks, function(data) {
      coord.hline().attr('func', {
        "y": function(t) { return yscale.apply(t.data) },
        "x1": u.constfunc(xmin),
        "x2": u.constfunc(xmax),
        "stroke": self.opts('stroke'),
        "stroke-width": self.opts('strokewidth'),
        "stroke-dasharray": self.opts('dasharray'),
        "stroke-dashoffset": self.opts('dashoffset')
      }).attr('data', data);
    });
  }
}
})(gg);

;/**
 * Date : 2/1/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * Author: Lisa Zhang
 **/
;(function(gg) {
"use strict";
;
// Aesthetics that we do not render legends for.
var NO_LEGEND = ["x", "y", "text", "group", "group2", "grp", 'tooltip']

gg.guide.legend = u.makeClass('gg.guide.legend', gg.guide.base);

gg.guide.legend.prototype.init = function(graph, layers, scales, position) {
  gg.guide.base.prototype.init.call(this);
  this._graph = graph;
  this._layers = layers;
  this._scales = scales;
  this._aes = _.chain(scales).keys() //all aes with scale attached, except x,y,_
               .reject(function(aes) {
                 return u.isDerivedAes(aes) || _.indexOf(NO_LEGEND, aes) != -1;
               }).value();
  this._mappings = _.map(layers, function(l) { return l.getMap() });
  this._legends = null; // groups of aes, one group = one legend

  this._position = position;
}

gg.guide.legend.prototype.width = function() {
  this.group();
  var self = this;

  if (this._position != "bottom") {
    var items =  _.chain(this._legends)
                  .map(function(legend) {
                    return legend.sample_scale.maxLabelWidth();
                  })
                  .max()
                  .value() + 30;
    var label =  _.chain(this._legends)
                  .map(function(legend) {
                    return u.strlenToPixel(
                      self._graph._varlabel(legend.sample_aes).length,
                      'bold'
                    );
                  })
                  .max()
                  .value() + 30;
    return Math.max(items, label, 0)
  }
  return 0;
}

gg.guide.legend.prototype.height = function() {
  if (this._position == "bottom") {
    // TODO(Lisa, 7/30/12): do this better
    return 100;
  }
  return 0;
}

gg.guide.legend.prototype.group = function() {
  var self = this;
  // group aes together where they have the SAME var mapping across ALL layers
  // they can be rendered in the same legend
  this._legends = [];
  var keys = _.clone(this._aes); // this SHOULD make a copy

  // helper function to push a new aes into a legend group
  var newscale = ''
  var pushItem = function(legend, aes) {
    legend.aes.push(aes);
    if (!legend.sample_scale_categorical) {
      newscale = self._scales[aes]
      legend.sample_aes = aes;
      legend.sample_scale = newscale;
      legend.sample_scale_categorical = newscale.DISCRETE;
    }
  };
  var getType = function(layertypes) {
    for (var i = 0; i < layertypes.length; i++) {
      if (layertypes[i] =="line" || layertypes[i]=="path") {
        return 'line';
      }
    }
    return 'point';
  }

  while (keys.length > 0) {
    var aes = keys.pop();
    var current_mapping = _.pluck(this._mappings, aes);
    var new_mapping = null;

    var legend = {
      aes : [],
      mapping : current_mapping,
      sample_aes : null,
      sample_scale : null,
      sample_scale_categorical : false,
      layers : [],
      type : 'point'
    };

    // start new legend grouping
    pushItem(legend, aes)
    // check other keys that have the exact same var mapping across all layers
    var i = 0;
    while (i < keys.length) {
      new_mapping = _.pluck(this._mappings, keys[i]);
      if (_.isEqual(new_mapping, current_mapping)) {
        pushItem(legend, keys.splice(i, 1)[0]);
      } else{
        i++;
      }
    }
    // check that there IS actually a layer attached to this
    var layertypes = [];
    var layers = [];
    for (i  =0; i<this._layers.length; i++) {
      if (this._mappings[i][legend.sample_aes]) {
        layers.push(this._layers[i]);
        layertypes.push(this._layers[i]._cls_name.split(".")[2]);
      }
    }
    if (layers.length === 0)  {
      continue; // break out!
    }
    legend.layers = layers;
    legend.type = getType(layertypes);


    this._legends.push(legend);
  } // all done!
  return this;
}

/**
 * Render the given legend.
 *
 * @context.canvas - Cartesian coordinate to render the legend.
 */
gg.guide.legend.prototype.render = function(context) {
  if (_.isNull(this._legends)) { this.group(); }
  var self = this;
  var shift, xshift = 0, yshift = 0;
  var orientation = this._position == "bottom" ? "h" : "v"
  _.each(this._legends, function(legend) {
    var newContext = {
      legend: legend,
      canvas : context.canvas.differentOffset(xshift, yshift),
      orientation: orientation,
      chartWidth : context.chartWidth,
      chartHeight : context.chartHeight
    };

    shift = self._renderEach(newContext);
    if (orientation == "h") {
      yshift += shift.y + 15;
    } else {
      yshift += shift.y + 10;
    }
  });
}

gg.guide.legend.prototype._renderEach = function(context) {
  var self = this;
  var legend = context.legend;
  var canvas = context.canvas;

  // since every scale maps the same var, we can just use a sample one to
  // do calculations. BUT always use discrete scale if possible!
  var sample_aes = legend.sample_aes;
  var sample_scale = legend.sample_scale;
  var layers = legend.layers;

  // use the layers to define the default stuff
  var scales = { // ...sensible defaults if we have no info
    "color": u.constfunc("#000000"),
    "stroke": u.constfunc("#000000"),
    "strokewidth": u.constfunc(0),
    "symbol": u.constfunc(gg.symbol.CIRCLE),
    "radius": u.constfunc(5), 
    "opacity": u.constfunc(1)
    //"linetype" : ???
  }

  if (legend.type == 'line') {
    scales.symbol = u.constfunc(gg.symbol.CROSS);
    scales.strokewidth = u.constfunc(1);
  } else {
    scales.symbol = u.constfunc(gg.symbol.CIRCLE);
  }
  _.each(_.keys(scales), function(s) { // ...better yet, get it from the layer
    if (s != "radius") {
      var attr = layers[0].opts(s);
      if (_.isString(attr) || _.isNumber(attr)) {
        scales[s] = u.constfunc(attr);
      }
    }
  });

  // overwrite default with actual scales
  _.each(legend.aes, function(a) {
    scales[a] = _.bind(self._scales[a].apply, self._scales[a], 'data');
  });

  // generate "ticks" (this is why we prefer discrete scale)
  var numticks = sample_scale.type() == "category"
               ? this._graph.levels(sample_aes).length
              : 5; // magic constant for default number of ticks
  var ticks = sample_scale.ticks(numticks);

  // rendering functions
  var _render_tick = legend.type == "line"
                   ? this._render_line_tick
                   : this._render_point_tick;

  //var yFunction = function(d) { return d.index * 18 + 18};
  var xpos = 0, ypos = 0;
  var _update_xpos = function(elt) { xpos += elt.getBBox().width; }
  var _update_ypos = function(elt) { ypos += elt.getBBox().height; }

  // ACTUAL RENDERING: draw title
  var elt = canvas.text().attr('func', {
    'x': 0,
    'y': 0,
    "font-size": "13px",
    "font-weight": "bold",
    "text-anchor": "start",
    'text': u.constfunc(self._graph._varlabel(sample_aes))
  }).attr('data', {})
  _update_ypos(elt);

  // ACTUAL RENDERING FOR REAL
  var pic, text;
  var width = 0, height = 0;
  _.each(ticks, function(tick) {
    pic = _render_tick(tick, canvas, scales, xpos, ypos);
    text = self._render_label(tick, canvas, xpos+20, ypos);

    if (context.orientation == "v") {
      ypos += Math.max(text.getBBox().height, pic.getBBox().height)
      height = Math.max(height, ypos);
    } else {
      xpos += text.getBBox().width + 40; // 20 for the pic + 20 for padding
      width = Math.max(width, xpos);

      if (xpos > context.chartWidth - text.getBBox().width) {
        // add new line when we guess (based on assumption that next label width
        // is the same as this one) that the next label will go over the 
        // chart width
        ypos += Math.max(text.getBBox().height, pic.getBBox().height)
        height = Math.max(height, ypos);
        xpos = 0;
      }
    }
  });

  if (context.orientation == "h") {
    // add an extra line...
    height += Math.max(text.getBBox().height, pic.getBBox().height);
  }

  return {'y': height, 'x': width}; // height used
}

gg.guide.legend.prototype._render_line_tick = function(tick, canvas, scales, xpos, ypos) {
  return canvas.line().attr('func', {
    'x1': u.constfunc(xpos),
    'x2': u.constfunc(xpos+14),
    'y1': u.constfunc(ypos),
    'y2': u.constfunc(ypos),
    'stroke': scales.color,
    'fill-opacity': scales.opacity,
    'stroke-width': scales.strokewidth
  }).attr('data', tick);
}

gg.guide.legend.prototype._render_point_tick = function(tick, canvas, scales, xpos, ypos) {
  return canvas.point().attr('func', {
    'cx': u.constfunc(xpos+7),
    'cy': u.constfunc(ypos),
    'r': scales.radius,
    'symbol': scales.symbol,
    'fill': scales.color,
    'stroke': scales.stroke,
    'fill-opacity': scales.opacity,
    'stroke-width': scales.strokewidth
  }).attr('data', tick);
}

gg.guide.legend.prototype._render_label = function(tick, canvas, xpos, ypos) {
  return canvas.text().attr('func', {
    'x': u.constfunc(xpos),
    'y': u.constfunc(ypos),
    'font-size': '12px',
    "text-anchor": "start",
    'text': function(d) { return String(d.label) }
  }).attr('data', tick);
}

/*
gg.guide.legend.protoytpe._renderDiscrete = function() {
}

gg.guide.legend.protoytpe._renderGradient = function() {
}
*/

})(gg);
;/**
 * Date : 2/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Author : Jeeyoung Kim
 * Stacked area chart.
 */
;(function(gg) {
gg.layer.area = u.makeClass('gg.layer.area', gg.layer.base);

gg.layer.area.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  this.opts('stroke','none')
    .opts('opacity',0.4)
    .opts('color','steelblue')
    .opts('strokewidth',0)
    .opts('padding',0.5)
};

gg.layer.area.prototype.calculatePartials = function() {
  // Returns whether statistics should run partial calculation. //
  return true;
}

gg.layer.area.prototype.layerGroup = function() {
  return ['group', 'group_color', 'group_opacity']
}

gg.layer.area.prototype.defaultMin = function(aes, provided) {
  if (_.isDate(provided)) {
    provided = provided.getTime()
  }
  if (aes == 'y') {
    return 0;
  }
  return gg.layer.base.prototype.defaultMin.call(this, aes, provided);
}

gg.layer.area.prototype.render = function(context) {
  var coord = context.coord;
  var cell = context.cell;
  var s = context.scales;

  var originLocation = context.rawScales.y.opts('domain_low');
  //if (originLocation < 0) { originLocation = 0; }
  var yOrigin = s.y(originLocation);

  var pointModifier = function(points) {
    return function(xs, ys) {
      // to make an area plot, two more points must be added to
      // the list of rendered points.
      _.each(points, function(p) {
        xs.push(x(p.x));
        ys.push(y(p.y));
      });
    }
  }

  var x, y;
  x = s.x;
  y = s.y_2 || s.y_override || s.y;

  var self = this;
  var computed = context.computedData;
  var grpVar= this.map('group')
  if (grpVar) {
    computed = _.sortBy(computed, function(d) {
      return d._internal[0][grpVar];
    });
  }
  computed.reverse()

  var bottomPoints = [];
  var xvar = this.map('x');
  _.each(computed, function(data) {
    if (self.opts('domain')) {
      data = self.fillZero(data, context, ['$sum', '$partial_1', '$partial_2']);
    }
    bottomPoints = _.chain(data._internal)
                    .map(function(p) {
                      return {
                        x: xvar ? p[xvar] : 1,
                        y: p.$partial_1 || 0
                      }
                    })
                    .sortBy(function(p) { return p.x })
                    .value();
    bottomPoints.reverse();
    coord.poly().attr('func', {
      x: x,
      y: y,
      _sort: x,
      _pointModifier: pointModifier(bottomPoints),
      _style: s
    }).attr('data', data);
  });
}

gg.layer.area.prototype.imputeMapping = function(mapping) {
  return gg.layer.base.prototype.imputeMapping.call(
    this, mapping, {'group' : ['stroke', 'color']});
}

})(gg);
;/**
 * Date : 1/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 */
;(function(gg) {
"use strict";

gg.layer.bar = u.makeClass('gg.layer.bar', gg.layer.base);

gg.layer.bar.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  var self = this;
  _.each(gg.opts.bar, function(v, k) { self.opts(k, v); });

  //this._default_stats = gg.stats.bin;
  var padding = 0;
  if (padding < 0) {
    gg.error(310, "Padding should be between 0 and 0.5");
  }
  if (padding > 0.5) {
    this.warn(310, "Padding should be between 0 and 0.5");
  }
  this.opts('padding',padding)
};

gg.layer.bar.prototype.calculatePartials = function() {
  // Returns whether statistics should run partial calculation. //
  return true;
}

gg.layer.bar.prototype.layerGroup = function() {
  return ['x']
}

gg.layer.bar.prototype.defaultMin = function(aes, provided) {
  if (_.isDate(provided)) {
    provided = provided.getTime()
  }
  if (aes == 'y') {
    return 0;
  }
  if (aes == 'x') {
    var align = this.opts('align');
    var width = this.opts('width');
    if (align == 'center') {
      return provided - width / 2;
    } else if (align == 'right') {
      return provided - width;
    }
  }
  return gg.layer.base.prototype.defaultMin.call(this, aes, provided);
}

gg.layer.bar.prototype.defaultMax = function(aes, provided) {
  if (aes == 'x') {
    var align = this.opts('align');
    var width = this.opts('width');
    if (align == 'center') {
      // force numerical operation - this is useful when provided is date.
      return provided - (-width / 2);
    } else if (align == 'left') {
      return provided - (-width);
    }
  }
  return gg.layer.base.prototype.defaultMax.call(this, aes, provided);
}

gg.layer.bar.prototype.defaultScales = function() {
  return {
    x: gg.scale.discrete('x')
  };
}

gg.layer.bar.prototype.checkErrors = function(context) {
  // check for errors in the context
  var rs = context.rawScales;
  if (rs.y.type() !== 'number') {
    gg.error(311, 'y scale must be numeric.');
    return true;
  }
  return false;
}

gg.layer.bar.prototype.render = function(context) {
  var coord = context.coord;

  var s = context.scales;

  // var width = context.width;
  var optWidth = this.opts('width');
  var width;

  if (context.rawScales.x.DISCRETE) {
    width = context.width;
  } else {
    // calculate the width.
    width = (context.rawScales.x.apply(optWidth) - context.rawScales.x.apply(0));
  }

  var padding = (width/2) * (1 - this.opts('padding') * 2);
  // todo(lisa, 4/22/2012): this logic is WRONG, should be using 0
  var originLocation = context.rawScales.y.opts('domain_low');
  if (!_.isNumber(originLocation)) {
    this.warn(-2, "originLocation is numeric.");
  }
  if (originLocation < 0) {
    originLocation = 0
  }
  var yOrigin;

  var y2 = null;
  var y1 = null;
  var x1, x2;

  var align = this.opts('align');
  if (align == 'left' || align == 'right') {
    var reversePadding = width / 2 - padding;
    if (align == 'right') {
      x1 = u.sub(s.x, reversePadding);
      x2 = u.sub(s.x, reversePadding + padding * 2);
    } else {
      x1 = u.add(s.x, reversePadding);
      x2 = u.add(s.x, reversePadding + padding * 2);
    }
  } else if (align == 'center') {
    x1 = u.sub(s.x, padding);
    x2 = u.add(s.x, padding);
  } else {
    // invalid option for align.
  }

  if (s.y_1 && s.y_2) {
    y1 = s.y_1;
    y2 = s.y_2;
  } else if (s.y_override) {
    // summed bar chart.
    y1 = s.y_override;
    yOrigin = y1(originLocation);
    y2 = yOrigin;
  } else {
    // normal, "identity" bar chart.
    y1 = s.y;
    yOrigin = y1(originLocation);
    y2 = yOrigin;
  }

  var self = this;
  var onDoubleclick = this.opts('onDoubleclick');
  _.each(context.computedData, function(datas) {
    datas.each(function(obj) {
      coord.rect()
        .ggTooltip(s)
        .ggDoubleClick(onDoubleclick, self)
        .attr('func', {
          x1:x1, x2:x2,
          y1:y1, y2:y2,
          _style:s
        })
      .attr('data', obj);
    });
  });
}

})(gg);
;/**
 * Date : 1/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 */

;(function(gg) {
"use strict";
gg.layer.box = u.makeClass('gg.layer.box', gg.layer.base);

gg.layer.box.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  /*
  var padding = 0.1;
  if (padding < 0) {
    gg.error(310, "Padding should be between 0 and 0.5");
  }
  if (padding > 0.5) {
    this.warn(310, "Padding should be between 0 and 0.5");
  }
  */

  // more default stuff
  var self = this;
  _.each(gg.opts.box, function(v, k) { self.opts(k, v); });

  // this.opts('padding',padding)
  this._default_stats = gg.stats.box;
};

gg.layer.area.prototype.calculatePartials = function() {
  // Returns whether statistics should run partial calculation. //
  return true;
}

gg.layer.box.prototype.layerGroup = function() {
  return ['x']
}

gg.layer.box.prototype.defaultMin = function(aes, provided) {
  if (_.isDate(provided)) {
    provided = provided.getTime()
  }
  if (aes == 'y') {
    // TODO(Jee) - hack for now - returning 0 for log scale sucks.
    return 0;
  }
  if (aes == 'x') {
    var align = this.opts('align');
    var width = this.opts('width');
    if (align == 'center') {
      return provided - width / 2;
    } else if (align == 'right') {
      return provided - width;
    }
  }
}
gg.layer.box.prototype.defaultMax = function(aes, provided) {
  if (aes == 'x') {
    var align = this.opts('align');
    var width = this.opts('width');
    if (align == 'center') {
      // force numerical operation - this is useful when provided is date.
      return provided - (-width / 2);
    } else if (align == 'left') {
      return provided - (-width);
    }
  }
  return gg.layer.base.prototype.defaultMax.call(this, aes, provided);
}

gg.layer.box.prototype.checkErrors = function(context) {
  // check for any errors that might belong in the layer.
  var mapped = _.keys(this.getMap());
  if (_.include(mapped, 'y')) {
    return false;
  }
  this.warn(320, "No mapping has been set in layer "+this._cls_name);
  return true;
}


gg.layer.box.prototype.render = function(context) {
  var coord = context.coord;
  var s = context.scales;

  var optWidth = this.opts('width');
  var width;
  if (context.rawScales.x.DISCRETE) {
    width = context.width;
  } else {
    // calculate the width.
    width = (context.rawScales.x.apply(optWidth) - context.rawScales.x.apply(0));
  }
  var padding = (width/2) * (1 - this.opts('padding') * 2);
  var x1, x2, x;
  var align = this.opts('align');
  var self = this;
  if (align == 'left' || align == 'right') {
    var reversePadding = width / 2 - padding;
    if (align == 'right') {
      x = u.sub(s.x, padding)
      x1 = u.sub(s.x, width / 2);
      x2 = u.sub(s.x, reversePadding + padding * 2);
    } else {
      x = u.add(s.x, width / 2)
      x1 = u.add(s.x, reversePadding);
      x2 = u.add(s.x, reversePadding + padding * 2);
    }
  } else if (align == 'center') {
    x1 = u.sub(s.x, padding);
    x = s.x
    x2 = u.add(s.x, padding);
  } else {
    // invalid option for align.
  }
  if (!s.y_q0) s.y_q0 = s.y;
  if (!s.y_q1) s.y_q1 = s.y;
  if (!s.y_q2) s.y_q2 = s.y;
  if (!s.y_q3) s.y_q3 = s.y;
  if (!s.y_q4) s.y_q4 = s.y;

  var onDoubleclick = this.opts('onDoubleclick');
  _.each(context.computedData, function(datas) {
    datas.each(function(data) {
      if (!_.isNull(data.$q0) && !_.isNull(data.$q3)) {
        // this is an actual BOX
        coord.vline().attr('func', {
          y1 : s.y_q0, y2 : s.y_q1,
          x : x,
          _style : s
        }).attr('data', data);
        coord.vline().attr('func', {
          y1 : s.y_q3, y2 : s.y_q4,
          x : x,
          _style : s
        }).attr('data', data);
        coord.rect()
          .ggDoubleClick(onDoubleclick, self)
          .attr('func', {
          x1 : x1, x2 : x2,
          y1 : s.y_q1,
          y2 : s.y_q3,
          _style : s
        }).attr('data', data);
        coord.hline().attr('func', {
          x1 : x1, x2 : x2,
          y : s.y_q4,
          _style: s
        }).attr('data', data);
        coord.hline().attr('func', {
          x1 : x1, x2 : x2,
          y : s.y_q2,
          _style: s
        }).attr('data', data);
        coord.hline().attr('func', {
          x1 : x1, x2 : x2,
          y : s.y_q0,
          _style: s
        }).attr('data', data);
      } else {
        // this is an OUTLIER
        coord.point().ggTooltip(s).attr('func', {
          'cx': x, // instead of 's.x'
          'cy' : s.y,
          'r' : s.radius,
          'symbol' : u.constfunc(gg.symbol.CIRCLE),
          _style: s
        }).attr('data', data);
      }
    });
  });
}

gg.layer.box.prototype.imputeMapping = function(mapping) {
  return gg.layer.base.prototype.imputeMapping.call(this, mapping, {'group':'x'});
}

gg.layer.box.prototype.checkErrors = function(context) {
  // check for errors in the context
  var rs = context.rawScales;
  if (rs.y.type() !== 'number') {
    gg.error(311, 'y scale must be numeric.');
    return true;
  }
  return false;
}

})(gg);
;/**
 * Date : 2/18/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * Author : Jeeyoung Kim
 **/
;(function(gg) {
"use strict";

gg.layer.histo = u.makeClass('gg.layer.histo', gg.layer.bar);

gg.layer.histo.prototype.init = function() {
  gg.layer.bar.prototype.init.call(this);
  this._default_stats = gg.stats.bin;
}

})(gg)
;/**
 * Date : 3/14/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

;(function(gg) {
"use strict";
gg.layer.jitter = u.makeClass('gg.layer.jitter', gg.layer.base);

gg.layer.jitter.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  // what are difference between them
  this.opts('radius', 3);
  this.opts('symbol', gg.symbol.CIRCLE);
};

gg.layer.jitter.prototype.render = function(context) {
  var coord = context.coord;
  var s = context.scales;
  // TODO - store them in a variable:w
  var jitterX = 20;
  var jitterY = 20;
  var attr = {
    'cx': function(d){ return s.x(d) + jitterX * (Math.random() - 0.5)},
    'cy': function(d){ return s.y(d) + jitterY * (Math.random() - 0.5)},
    'r' : s.radius,
    'symbol' : s.symbol,
    stroke:s.stroke,
    'stroke-width':s.strokewidth,
    'fill-opacity':s.opacity,
    fill:s.color
  };
  context.computedData.each(function(obj) {
    coord.point()
      .attr('func', attr)
      .attr('data', obj);
  });
}

gg.layer.jitter.prototype.hasGroup = function() { return false; }

})(gg);
;/**
 * Date : 2/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Statistics for line chart.
 */
;(function(gg) {
"use strict";
gg.layer.line = u.makeClass('gg.layer.line', gg.layer.base);

gg.layer.line.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);

  this.opts('symbol', gg.symbol.CIRCLE);
  var self = this;
  _.each(gg.opts.line, function(v, k) { self.opts(k, v); });
};

gg.layer.line.prototype.layerGroup = function() {
  return ['group', 'group_color', 'group_strokewidth']
}

gg.layer.line.prototype.render = function(context) {
  var coord = context.coord;
  var s = context.scales;

  var y = s.y_override || s.y;
  var xKey = this.map('x');
  var yKey = this.map('y');
  var smoother = null;
  var self = this;

  _.each(context.computedData, function(data) {
    var interpolated;
    // interpolate the zeros.
    if (self.opts('domain')) {
      interpolated = self.fillZero(data, context, ['$sum', '$partial_1', '$partial_2']);
    } else {
      interpolated = data;
    }
    coord.poly().attr('func', {
      x: s.x,
      y: y,
      _sort: s.x,
      stroke : s.color,
      fill: 'none',
      'stroke-width': s.strokewidth
    }).attr('data', interpolated);

    if (data.len() < 100) {
      // add points for things without that many points
      var attrs = {
        'cx' : s.x,
        'cy' : y,
        'r' : s.strokewidth,
        'stroke' : '#FFFFFF',
        'fill':    s.color,
        'symbol' : s.symbol,
        'stroke-width' : 0
      }
      data.each(function(obj) {
        coord.point().ggTooltip(s).attr('func', attrs).attr('data', obj);
      });
    }

  });
}

gg.layer.line.prototype.imputeMapping = function(mapping) {
  return gg.layer.base.prototype.imputeMapping.call(
    this, mapping, {'group' : ['strokewidth', 'stroke', 'color']});
}

gg.layer.line.prototype.defaultMin = function(aes) {
  if (aes == 'y') {
    return 0;
  }
}

})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 */
;(function(gg){
"use strict";
gg.layer.path = u.makeClass('gg.layer.path', gg.layer.base);

gg.layer.path.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  var self = this;
  _.each(gg.opts.line, function(v, k) { self.opts(k, v); });
};

gg.layer.path.prototype.render = function(context) {
  var coord = context.coord;
  var s = context.scales;

  var y = s.y_override || s.y;
  _.each(context.computedData, function(data) {
    coord.poly().attr('func', {
      x: s.x,
      y: y,
      stroke : s.color,
      fill: 'none',
      'stroke-width': s.strokewidth
    }).attr('data', data);
  });
}

gg.layer.line.prototype.imputeMapping = function(mapping) {
  return gg.layer.base.prototype.imputeMapping.call(
    this, mapping, {'group' : ['stroke', 'color']}); }

})(gg)
;/**
 * Date : 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

;(function(gg) {
"use strict";
gg.layer.point = u.makeClass('gg.layer.point', gg.layer.base);

gg.layer.point.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  // what are difference between them
  var self = this;
  _.each(gg.opts.point, function(v, k) { self.opts(k, v); });

  this.opts('symbol', gg.symbol.CIRCLE);
};

gg.layer.point.prototype.render = function(context) {
  var coord = context.coord;
  var s = context.scales;

  var y = s.y_override || s.y;
  var attrs = {
    'cx' : s.x,
    'cy' : y,
    'r' : s.radius,
    'symbol' : s.symbol,
    _style: s
  }
  // var tooltip = this._graph.opts('tooltip');
  context.computedData.each(function(obj) {
    coord.point().ggTooltip(s).attr('func', attrs).attr('data', obj);
  }, this.opts('render-max'));
}

gg.layer.point.prototype.imputeMapping = function(mapping) {
  return gg.layer.base.prototype.imputeMapping.call(
    this, mapping, {'color' : 'stroke'});

}

gg.layer.point.prototype.hasGroup = function() { return false; }

gg.layer.base.prototype.requiredMap = function() {
  return ['x', 'y'];
};


})(gg);
;/**
 * Date : 2/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Author : Jeeyoung Kim
 * Text
 */

;(function(gg){
"use strict";
gg.layer.text = u.makeClass('gg.layer.text', gg.layer.base);

gg.layer.text.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  var self = this;
  _.each(gg.opts.text, function(v, k) { self.opts(k, v); });
};

gg.layer.text.prototype.render = function(context) {
  var coord = context.coord;
  var s = context.scales;
  var y = s.y_override || s.y;
  context.computedData.each(function(obj) {
    coord.text().attr('func', {
      x: s.x,
      y: y,
      text: s.text,
      fill: s.color,
      'fill-opacity': s.opacity,
      'font-size': s.fontsize,
      'font-family': s.font
    }).attr('data', obj);
  });
}

gg.layer.text.prototype.hasGroup = function() { return false; }

})(gg);
;/**
 * Date : 2/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Author : Jeeyoung Kim
 * Tile chart.
 */
;(function(gg){
"use strict";
gg.layer.tile = u.makeClass('gg.layer.tile', gg.layer.base);

gg.layer.tile.prototype.init = function() {
  gg.layer.base.prototype.init.call(this);
  this.opts('stroke','none')
    .opts('padding',0.5)
};

gg.layer.tile.prototype.render = function(context) {
  var s = context.scales;
  var width = context.rawScales.x.width();
  var height = context.rawScales.y.width();
  var paddingWidth = (width/2);
  var paddingHeight = (height/2);
  var coord = context.coord;
  context.computedData.each(function(data, idx) {
    coord.rect().attr('func', {
      'x1': u.sub(s.x, paddingWidth),
      'y1': u.sub(s.y, paddingHeight),
      'x2': u.add(s.x, paddingWidth),
      'y2': u.add(s.y, paddingHeight),
      '_style':s
    }).attr('data', data);

  });
}

gg.layer.tile.prototype.hasGroup = function() { return false; }

})(gg);
;/**
 * Date : 5/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 * Author : Lisa Zhang
 **/
;(function(gg) {
"use strict";

gg.pivot = u.makeClass('gg.pivot');

gg.pivot.prototype.init = function(data) {
  this._data = data;
  this._statData = {};
  this._attr = u.cloneobj(gg.opts.pivot);

  this._mapping = {};
  this._levels = {};

  this._stats = null;
  this._calculated = false;

  this._scales = {};
}

gg.pivot.prototype.data = u.dataGetter();

gg.pivot.prototype.map = function(key, val) {
  if (arguments.length === 1) {
    return this._mapping[key];
  }
  if (val) {
    this._mapping[key] = val;
  } else {
    delete this._mapping[key]
  }
  this.resetCalculate();
  return this;
}

gg.pivot.prototype.levels = function(key, val) {
  if (arguments.length === 1) {
    if (this._levels[key]) {
      return this._levels[key];
    }
    return this.callData('levels', key);
  }
  if (val) {
    this._levels[key] = val;
  } else {
    delete this._levels[key]
  }
  return this;
}

gg.pivot.prototype.getMap = function() {
  // translate mapping to what is typically used in gg.graph
  var mapping = {}
  if (this._mapping.column) {
    mapping.group_c = this._mapping.column;
  }
  if (this._mapping.row) {
    mapping.group_r = this._mapping.row;
  }
  if (this._mapping.value) {
    mapping.y = this._mapping.value;
  }
  return mapping;
}

gg.pivot.prototype.getScale = function(key) {
  return this._scales[key];
}

gg.pivot.prototype.scale = function(key, scale) {
  // Setter for the given scale.
  if (key != 'column' && key != 'row') {
    return;
  }
  scale = u.instantiate(scale);
  if (!scale) {
    gg.error(201, "Attempting to add an undefined or malformed scale: "+scale)
  }
  var cloned = u.cloneobj(scale);
  cloned.attach(this, key);
  this._scales[key] = cloned;
  return this;
}

gg.pivot.prototype.opts = u.opts();

gg.pivot.prototype.stats = function(stats) {
  /** Getter / setter for stats */
  if (arguments.length === 1) {
    stats = u.instantiate(stats);
    if (!stats) {
      gg.error(304, "Attempting to add an undefined or malformed statistic: "+stats);
    }
    this._stats = stats;
    this.resetCalculate(); // do this later
    return this;
  }
  if (this._stats) {
    return this._stats;
  }
  // calculate default stats
  var valueVar = this._mapping.value;
  var type = (valueVar ? this._data.type(valueVar) : "");

  if (type == "category" || !valueVar) {
    return gg.stats.count();
  } else if (type == "date") {
    return gg.stats.mean();
  } else {
    return gg.stats.sum();
  }
}

gg.pivot.prototype.callData = function(fn, key, queryType) {
  if (!queryType || queryType == 'data') {
    return this._data[fn](key);
  } else if (queryType == 'aes') {
    return this._data[fn](this.map(key));
  }
  gg.error(-1, "not supported "+queryType);
}

gg.pivot.prototype.type = function(key, queryType) {
  return this.callData('type', key, queryType);
}

gg.pivot.prototype.min= function(key, queryType) {
  return this.callData('min', key, queryType);
}

gg.pivot.prototype.max = function(key, queryType) {
  return this.callData('max', key, queryType);
}

gg.pivot.prototype.calculateStats = function(stat, context) {
  // translate scales to what is typically used in gg.graph
  // generate context
  return stat.calculateStats(this._data, context)[0];
}

gg.pivot.prototype.calculate = function() {
  if (this._calculated) return; // short circuit

  // stats:
  var stats = this.stats()
  // scales:
  var scales = {}
  if (this._scales.column) { scales.group_c = this._scales.column; }
  if (this._scales.row) { scales.group_r = this._scales.row; }
  // mappings:
  var mapping = this.getMap();
  // set up context
  var context = {
    scales : scales,
    mapping : mapping,
    group_aes : [],
    attr: {
      y: this.opts('y'),
      x: this.opts('x')
    },
    no_partials : true
  }
  // now actually run stuff: we need to aggregate by different
  // groupings: by col*row, col only, row only, and overall
  this._statData = {};
  // col * row.
  if (mapping.group_c && mapping.group_r) {
    context.group_aes = ['group_c', 'group_r']
    this._statData.cr = this.calculateStats(stats, context);
  }

  // col
  if (mapping.group_c) {
    // temporarily remove group_r from mappings
    var tmp = context.mapping.group_r;
    delete context.mapping.group_r;
    // run it
    context.group_aes = ['group_c']
    this._statData.c = this.calculateStats(stats, context);
    // add back group_r and remove group_c for the next calculation
    context.mapping.group_r = tmp;
    delete context.mapping.group_c;
  }
  // row
  if (mapping.group_r) {
    context.group_aes = ['group_r']
    this._statData.r = this.calculateStats(stats, context);
    // remove group_r for the rest of the calculation
    delete context.mapping.group_r;
  }
  this._statData.none = this.calculateStats(stats, context);
  return this;
}

gg.pivot.prototype.resetCalculate = function() {
  this._calculated = false;
  this._default_stats = gg.stats.sum;
  return this;
}

gg.pivot.prototype._getPrettifyFunction = function(statData, valVar) {
  // calculate max & min
  var max = -Infinity, min = Infinity, allInt = true;
  _.each(statData, function(data, key) {
    _.each(data.get(valVar), function(x) {
      if (x > max) max = x;
      if (allInt && x % 1 !== 0) allInt = false; // this seems inefficient...
    });
  });
  // logic: if allInt or exp=log_10(max) >= 3, then use rounding
  //        else use 3 sig figs
  var exp = Math.log(Math.abs(max))/Math.LN10;
  if (allInt || exp >= 3) { return function(x) { return u.prettify(x,0) } }
  return function(x) { return u.prettify(x,-Math.floor(exp-2)) } // was exp-3 which caused use of 4 sig figs
}

var toString = function(x) { return x.toString() };

gg.pivot.prototype._getColumnFormatter = function() {
  if (!this.opts('colFormatter')) {
    return toString;
  }
  return this.opts('colFormatter');
}

gg.pivot.prototype._getRowFormatter = function() {
  if (!this.opts('rowFormatter')) {
    return toString;
  }
  return this.opts('rowFormatter');
}


gg.pivot.prototype._makeTableArray = function() {
  var colVar = this.map('column'),
      rowVar = this.map('row');
  // valVar is harder. this is somewhat of a hack?
  var statMapping = this.stats().imputeMapping({})
  var valVar = statMapping.y || statMapping.y_override ;

  var cols = colVar ? this.levels(colVar) : [],
      rows = rowVar ? this.levels(rowVar) : [];
  var rowFormatter = this._getRowFormatter();
  var colFormatter = this._getColumnFormatter();

  cols = _.map(cols, colFormatter);
  rows = _.map(rows, rowFormatter);

  var ncol = cols.length, nrow = rows.length;

  // get the prettify function
  var prettyFunc = this._getPrettifyFunction(this._statData, valVar);

  var table = new Array(nrow+2); // array of arrays representing tables
  var allLabel = this.opts('title-all')
  table[0] = [''].concat(cols).concat([allLabel]);  // first row = col names
  var i, j; //tmp variables for i = ROW, j = COL
  for (j=1; j<nrow+2; j++) {
    table[j] = new Array(ncol+2); // instantiate the other rows
    table[j][0] = (j == nrow+1) ? allLabel : rows[j-1]; // first col = row name
  }

  // populate table with col*row aggregate
  if (this._statData.cr) {
    _.each(this._statData.cr.getRaw(), function(d) {
      j = colVar ? _.indexOf(cols, colFormatter(d[colVar])) : -1;
      i = rowVar ? _.indexOf(rows, rowFormatter(d[rowVar])) : -1;
      if (i !== -1 && j !== -1) {
        table[i+1][j+1] = prettyFunc(d[valVar]);
      }
    });
  }
  // populate table with col aggregate
  if (this._statData.c) {
    _.each(this._statData.c.getRaw(), function(d) {
      j = colVar ? _.indexOf(cols, colFormatter(d[colVar])) : 0;
      if (j !== -1) {
        table[nrow+1][j+1] = prettyFunc(d[valVar]);
      }

    });
  }
  // populate table with rowaggregate
  if (this._statData.r) {
    _.each(this._statData.r.getRaw(), function(d) {
      i = rowVar ? _.indexOf(rows, rowFormatter(d[rowVar])) : 0;
      if (i !== -1) {
        table[i+1][ncol+1] = prettyFunc(d[valVar]);
      }
    });
  }
  // populate table with overall aggregate
  if (this._statData.none) {
    _.each(this._statData.none.getRaw(), function(d) {
      table[nrow+1][ncol+1] = prettyFunc(d[valVar]);
    });
  }

  return table;
}

gg.pivot.prototype.makeTableDom = function(dom) {
  if (!dom) {
    gg.error(212, "Invalid dom for .opts('dom') - " + dom)
  }

  var $ = jQuery;
  var element = $(dom);
  if (!element) {
    gg.error(212, "Invalid dom for .opts('dom') - " + dom)
  }

  var paddingleft = this.opts('padding-left')
  var paddingright = this.opts('padding-right')
  var paddingtop = this.opts('padding-top')
  var paddingbottom = this.opts('padding-bottom')
  //var tableheight = this.opts('height')
  var tablewidth = this.opts('width')

  // clear everything
  element.empty()

  // add the table
  var table = $('<table></table>');
  table.css('color','black');
  //table.width(this.opts('width'));
  //table.height(this.opts('height'));
  //table.css('height', tableheight);
  table.css('width', tablewidth);
  table.css('margin-top', paddingtop);
  table.css('margin-bottom', paddingbottom);
  table.css('margin-right', paddingright);
  table.css('margin-left', paddingleft);

  var tbo = $('<tbody></tbody>');
  table.append(tbo);
  element.append(table);
  return tbo;
}

gg.pivot.prototype.render = function(dom) {
  // todo: add scale imputation
  this.calculate();
  var array = this._makeTableArray();
  // now adding stuff...
  dom = dom || this.opts('dom');
  var tbo = this.makeTableDom(dom);
  var row, rowArray, elt, innerText;

  // labels
  var titleColspan = array[0] ? array[0].length+2 : 2;
  var rowColspan = array[0] ? array[0].length : 1;
  var colRowspan = array[0] ? array.length : 1;

  // title
  var title = this.opts('title');
  row  = $('<tr></tr>');
  elt = $('<th></th>').attr("colspan",titleColspan);
  elt.text(_.isUndefined(title) ? ' ' : title);
  elt.css('textAlign', 'center');
  elt.css('paddingBottom', '5px');
  //elt.css('border','1px solid black');
  row.append(elt);
  tbo.append(row);

  // column title
  var colname = this.opts('title-column') || this.map('column');
  row  = $('<tr></tr>');
  row.append($('<th></th>'));
  row.append($('<th></th>'));

  elt = $('<th></th>').attr("colspan",rowColspan);
  elt.text(colname);
  elt.css('textAlign', 'center');
  elt.css('paddingBottom', '5px');
  elt.css('font-weight', 'normal');
  if (colname) { elt.css('border','1px solid black');}
  row.append(elt);
  tbo.append(row);

  // body
  var i, j;
  for (i = 0; i < array.length; i++) {
    rowArray = array[i];
    row = $('<tr></tr>')
    if (i === 0) {
      row.append($('<th></th>'));
    } else if (i == 1) {
      // row title
      var rowname = this.opts('title-row') || this.map('row');
      elt = $('<th></th>').attr("rowspan",colRowspan);

      var innerelt = $('<div></div>')
      innerelt.text(rowname);
      innerelt.css('-webkit-transform', 'rotate(270deg)');
      innerelt.css('-moz-transform', 'rotate(270deg)');
      innerelt.css('-ms-transform', 'rotate(270deg)');
      innerelt.css('-o-transform', 'rotate(270deg)');
      elt.css('paddingBottom', '5px');
      elt.css('font-weight', 'normal');
      if (rowname) { elt.css('border','1px solid black'); }
      elt.css('textAlign', 'center');
      elt.css('verticalAlign', 'middle');
      elt.append(innerelt);
      row.append(elt);
    }
    for (j = 0; j < rowArray.length; j++) {
      innerText = rowArray[j];
      elt = $((i*j === 0) ? '<th></th>' : '<td></td>');

      elt.text(_.isUndefined(innerText) ? ' \u00A0' : innerText);
      row.append(elt);

      elt.css('minWidth', '50px');
      elt.css('width', 100/rowArray.length  + "%");
      elt.css('minHeight', '22px');
      elt.css('height', 100/array.length  + "%");
      elt.css('padding', '2px');
      if (i == 0 && j == 0) {
        // top left cell. no style.
      } else if (i == 0 || j == 0) {
        // header style.
        elt.css('border', '1px solid black');
      } else {
        // normal style
        elt.css('border', '1px solid gray');
        elt.css('textAlign', 'right');
      }
    }
    tbo.append(row);
  }

  return this;
}

})(gg);
;/**
 * Date : 1/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";
gg.scale.continuous = u.makeClass('gg.scale.continuous', gg.scale.base);

gg.scale.continuous.prototype.init = function(transform, min, max) {
  gg.scale.base.prototype.init.call(this);
  this._type = 'number';
  this._d3scale = null;
  this._attr.min = _.isNumber(min) ? min : null;
  this._attr.max = _.isNumber(max) ? max : null;
  this._useDefault = false;
  this._defaultMin = null;
  this._defaultMax = null;
  this.opts('transform', transform || 'linear');
  // this.opts('expand', 0.05);
  this.opts('expand', 0);
  if (this.opts('transform') === 'log') {
    this.opts('absolute_min', 0.1);
  }
}

gg.scale.continuous.prototype.domain = function(domain) {
  if (arguments.length === 1) {
    this.min(domain[0])
    this.max(domain[1])
    return this;
  }
  return [this._attr.domain_low, this._attr.domain_high];
}

gg.scale.continuous.prototype.width = function() {
  if (!this._attr.width) {
    this._attr.width = this._makeWidth();
  }
  return this._attr.width;
}

gg.scale.continuous.prototype.maxLabelWidth = function() {
  var max = this._graph.max(this._aes);
  var min = this._graph.min(this._aes);
  var exp = Math.floor(Math.log((max - min)/ 10) / Math.LN10)
  return max ? u.strlenToPixel(u.prettify(max, -exp).length) : 15;
}

gg.scale.continuous.prototype.distance = function(v, w) {
  return Math.abs(this._d3scale(v) - this._d3scale(w));
}

gg.scale.continuous.prototype._makeDefaultMinMax = function() {
  if (!this._graph) {
    // run only if the graph is attached.
    return;
  }
  var aes = this._aes;
  var min = this._graph.min(aes);
  var max = this._graph.max(aes);
  this._defaultMin = this._graph.defaultMin(aes, min);
  this._defaultMax = this._graph.defaultMax(aes, max);

  if (_.isNumber(this._defaultMin) && this._defaultMin < this._attr.absolute_min) {
    this._defaultMin = this._attr.absolute_min;
  }
  if (_.isNumber(this._defaultMax) && this._defaultMax > this._attr.absolute_max) {
    this._defaultMax = this._attr.absolute_max;
  }
}

gg.scale.continuous.prototype._makeWidth = function() {
  var aes = this._aes;
  var level = this._graph.levels(aes, null, this._facetIndex);
  var len = level.length;
  var width;
  if (len <= 1) {
    width = this.rangeSize();
  } else {
    var scaleFunc = _.bind(this._apply, this);
    width = u.minimumDelta(_.map(level, scaleFunc));
  }
  // at least 1 pixel thick.
  return Math.max(width, 1);
}

gg.scale.continuous.prototype._makeDomain = function(){
  this._makeDefaultMinMax();
  var aes = this._aes;
  var minUser = this._attr.min,
      maxUser = this._attr.max;
  var minData, maxData;
  var min = 0, max = 2;

  if (_.isNumber(minUser) && _.isNumber(maxUser)) {
    // everything is set by user; no work to be done, yay!
    min = minUser;
    max = maxUser;
  } else if (this._graph._layers.length > 0) {
    // need to calculate min & max from data
    if (this._graph.isMapped(aes, true)) {
      minData = this._graph.min(aes, null, this._facetIndex);
      maxData = this._graph.max(aes, null, this._facetIndex);
      if (minData === maxData) {
        // if minData == maxData, the resulting graph looks ugly,
        // because guides aren't generated correctly.
        minData = minData - 1;
        maxData = maxData + 1;
      }
    } else {
      var vals = _.chain(this._graph._layers)
                  .invoke('opts', aes)
                  .value();
      minData = _.min(vals) - 1;
      maxData = _.max(vals) + 1;
    }
    // expand min & max of DATA by a little bit
    if (this.opts('expand') > 0) { // this is assumeing LINEAR scale
      var expand = (maxData - minData) * this.opts('expand');
      if (!(minData === 0 && this._aes == 'y')) {
        minData -= expand;
      }
      maxData += expand;
    }
    // now see if there is an absolute min & max...
    if (_.isNumber(this._defaultMin) && minData > this._defaultMin) {
      minData = this._defaultMin;
    }
    if (_.isNumber(this._defaultMax) && maxData < this._defaultMax) {
      maxData = this._defaultMax;
    }
    // finally, calculate min and max...
    min = _.isNumber(minUser) ? minUser : minData;
    max = _.isNumber(maxUser) ? maxUser : maxData;
  } else {
    // min = 0; max = 2;
  }
  // make sure it is within the absolute range
  if (_.isNumber(this._attr.absolute_min)) {
    min = Math.max(min, this._attr.absolute_min);
  }
  if (_.isNumber(this._attr.absolute_max)) {
    max = Math.min(max, this._attr.absolute_max);
  }
  // error checking
  if (!this._saneNumber(min)) {
    gg.error(406, "min() calculation returned an invalid number.");
  }
  if (!this._saneNumber(max)) {
    gg.error(406, "max() calculation returned an invalid number.");
  }
  if (min > max) {
    gg.error(408, "min is set to be bigger than max in a continuous scale.");
  }
  this.opts('domain_low', min);
  this.opts('domain_high', max);
  return [min, max];
};

gg.scale.continuous.prototype.make = function(facetIndex) {
  if (!this.range()) {
    gg.error(407, "Continuous scale's range is not set.");
  }
  // use d3scale internally for convenience
  var transform = this.opts('transform')
  this._d3scale = transform == "log"
                ? d3.scale.log()
                : (transform == "sqrt" ? d3.scale.sqrt() : d3.scale.linear());
  // calculate
  this._facetIndex = _.isNumber(facetIndex) ? facetIndex : -1;
  var domain = this._makeDomain();
  this._d3scale.domain(domain).range(this.range());
  return this;
}

gg.scale.continuous.prototype._apply = function(input) {
  if (!this._d3scale) {
    this.make();
  }
  var EPSILON = gg.opts.epsilon;
  // for null input, scale returns null.
  if (input === null) { return null }
  /*
  if (input < this._attr.domain_low - EPSILON ||
      input > this._attr.domain_high+ EPSILON) {
    this.warn(404, "Continuous scale got value "+input+" that is not in the " +
                 "domain ["+this._attr.domain_low +","+this._attr.domain_high+
                 "]");
  }
  */

  if (input === 0 && this.opts('transform')=='log') {
    input = this._attr.domain_low;
  }
  return this._d3scale(input);
}

gg.scale.continuous.prototype.ticks = function(numticksSuggested, flip) {
  // some constants
  var EPSILON = 0, // tolerance for numerical calculation error
      min = this._attr.domain_low,
      max = this._attr.domain_high,
      isLog = this.opts('transform') == "log";
  var numticks = this._suggestNumticks(numticksSuggested, flip);
  // word
  if (isLog) {
    min = Math.max(Math.log(min) / Math.LN10, 0);
    max = Math.log(max) / Math.LN10;
    EPSILON = gg.opts.epsilon;
  }
  var span = max - min;
  // estimate the steps
  var step = Math.pow(10, Math.floor(Math.log(span / numticks) / Math.LN10))
  var error = numticks / span * step; // = step / (span/numticks)
  if (error <= 0.15) { //these numbers came from d3
    step *= 10;
  } else if (error <= 0.35) {
    step *= 5;
  } else if (error <= 0.75) {
    step *= 2;
  }
  // now construct the ticks
  var tickObjects = [];
  var current = Math.ceil(min/step) * step;
  if (isLog) { current -= 1 }
  var minExp = -Math.floor(Math.log(step)/Math.LN10);
  while (current <= max + EPSILON) {
    var num = current;
    var pretty = num;
    if (isLog) {
      if (num % 1 !== 0 && num % 1 <= 0.1) {
        current += step;
        continue;
      }

      if (num % 1 > EPSILON) { // make the exponential a nice number
        num = Math.floor(num) + Math.log(10*(num % 1))/Math.LN10;
        if (num % 1 == 0) {
          current += step;
          continue;
        }
      }
      num = Math.exp(num*Math.LN10);

      if (num > this._attr.domain_high + EPSILON) { break; }
      if (num < this._attr.domain_low - EPSILON) {
        current+= step;
        continue;
      }
      pretty = u.prettify(num) //, Math.ceil(current));
    } else {
      pretty = u.prettify(num, minExp);//minExp = order of mag. of smallest tick
    }
    tickObjects.push(this._tickObject(num, this.apply(num), pretty));
    current += step;
  }
  return tickObjects;
}

gg.scale.continuous.prototype.CONTINUOUS = true;

})(gg);
;/**
 * Date : 1/6/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/

;(function(gg) {
"use strict";

gg.scale.discrete = u.makeClass('gg.scale.discrete', gg.scale.base);

gg.scale.discrete.prototype.init = function() {
  gg.scale.base.prototype.init.call(this);
  this._type = 'category';
  this._levels = null;    // levels of the categorical var
  this._eachWidth = null; // width of each element
  this._padding = 0.02;   // percent OR pixel padding
  this._rangeMin = null;  // min of range
}

gg.scale.discrete.prototype.domain = function(levels) {
  if (arguments.length === 0) {
    return this._levels;
  }
  this._levels = levels;
  return this;
}

gg.scale.discrete.prototype.padding = function(padding) {
  if (arguments.length === 0) { // use as getter
    return this._padding;
  }
  u.assertNumber(padding);
  this._padding = padding;
  return this;
}

gg.scale.discrete.prototype.width = function() {
  if (!this._eachWidth)  {
    this.make();
  }
  return this._eachWidth;
}

gg.scale.discrete.prototype.maxLabelWidth = function() {
  var levels = this._graph.levels(this._aes);
  if (!levels) { return 0 }
  return u.strlenToPixel(_.chain(levels)
                          .map(function(x) { return String(x).length })
                          .max()
                          .value());
}

/* TODO(lisa, 1/31/12): we'll need some way for the user to 
 * specify how they want the levels to be ordered */

gg.scale.discrete.prototype.make = function(facetIndex) {
  if (!this.range()) {
    gg.error(407, "Discrete scale's range is not set.");
  }
  this._facetIndex = _.isNumber(facetIndex) ? facetIndex : -1;
  var range = this.range();
  var width = Math.abs(range[1] - range[0]); // width of the chart
  this._rangeMin = _.min(range)
  // set the levels
  if (!this._levels) {
    this._levels = this._graph.levels(this._aes, null, facetIndex); // get from graph
    if (this._levels.length == 0) {
      this._levels = [''];
    }
  }
  // calculate the width of each thing, then account for padding
  this._eachWidth = width / this._levels.length;
  this._eachWidth = Math.abs(this._eachWidth);
  var padding = this._padding >= 1
              ? this._padding                    // padding already in pixel
              : this._eachWidth * this._padding; // convert into pixels
  this._eachWidth -= padding;
  this._padding = padding;

  return this;
}

gg.scale.discrete.prototype._apply = function(input) {
  if (!this._levels) {
    this.make();
  }
  var idx = _.indexOf(this._levels, input); //TODO(lisa, 3/1/11) this is O(n^2)
  if (idx === -1) {
    // TODO(jee) - better error message?
    this.warn(404, "Discrete scale got value "+input+" that is not in the domain.");
  }
  return (this._rangeMin + idx * (this._eachWidth + this._padding)
          + this._padding/2 + this._eachWidth/2);
}

gg.scale.discrete.prototype.ticks = function(suggestedNumticks, flip) {
  var numticks = this._suggestNumticks(suggestedNumticks, flip)
  var step = Math.max(1, Math.round(this._levels.length / numticks));
  var shift = Math.floor(step/2);
  var tickObjects = [];
  for (var i=shift; i < this._levels.length; i += step) {
    tickObjects.push(this._tickObject(this._levels[i],
                                      this.apply(this._levels[i]),
                                      this._levels[i]));
  }
  return tickObjects;
}

gg.scale.discrete.prototype.toCode = function(indent, fnIndent) {
  var scaleObj = { 'cls' : this._cls_name,
                   'funcs' : [['padding', this._padding],
                              ['opts', JSON.stringify(this.getAttr())]]};
  if (this._levels) {
    scaleObj.funcs.push(['domain', JSON.stringify(this._levels)]);
  }
  return u.toCode(indent, fnIndent, scaleObj);
}

gg.scale.discrete.prototype.DISCRETE = true;

})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";

gg.scale.gradient = u.makeClass('gg.scale.gradient', gg.scale.continuous);

gg.scale.gradient.prototype.init = function(low, high) {
  gg.scale.continuous.prototype.init.call(this);
  this._attr.range_low = low || gg.opts.gradient.low;
  this._attr.range_high = high || gg.opts.gradient.high;
  this._d3scale = null;
}

gg.scale.gradient.prototype.make = function() {
  if (!this.range()) {
    gg.error(407, "Gradient scale's range is not set.");
  }
  if (!_.isNumber(this._attr.domain_low)) this._attr.domain_low = this._graph.min(this._aes)
  if (!_.isNumber(this._attr.domain_high)) this._attr.domain_high = this._graph.max(this._aes)
  this._d3scale = d3.scale.linear()
    .domain([this._attr.domain_low, this._attr.domain_high])
    .range(this.range());
  return this;
};

gg.scale.gradient.prototype._apply = function(input) {
  if (!this._d3scale) {
    this.make();
  }
  return this._d3scale(input);
}

})(gg);
;/**
 * Date : 2/4/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Identity scale. right now, used for symbol for a very hacky reason.
 **/

;(function(gg) {
"use strict";

gg.scale.id= u.makeClass('gg.scale.id', gg.scale.base);

gg.scale.id.prototype.init = function() {
  gg.scale.base.prototype.init.call(this);
  this._type = null;
}

gg.scale.id.prototype.type = function() {
  if (!this._type) {
    this._type = this._graph.type(this._aes);
  }
  return this._type;
}

gg.scale.id.prototype.domain = function() {
  if (this._type == "number") {
    return [this._graph.min(this._aes), this._graph.max(this._aes)]
  }
  return this._graph.levels(this._aes);
}

gg.scale.id.prototype.range = function() {
  return this.domain();
}

gg.scale.id.prototype.make = function() {
  if (this.type() == "number") {
    this._attr.domain_low = this._graph.min(this._aes)
    this._attr.domain_high = this._graph.max(this._aes)
  }
}

gg.scale.id.prototype._apply = function(value) {
  return value;
}

gg.scale.id.prototype.maxLabelWidth = function() {
  var levels = this._graph.levels(this._aes);
  if (!levels) { return 0 }
  return u.strlenToPixel(_.chain(levels)
                          .map(function(x) { return String(x).length })
                          .max()
                          .value());
}

/*
// TODO(lisa, 25FEB2012) - this does NOT work...
gg.scale.id.prototype.contTicks = gg.scale.continuous.prototype.ticks
gg.scale.id.prototype.discTicks = gg.scale.discrete.prototype.ticks

gg.scale.id.prototype.ticks = function(numticks) {
  if (this._type == "continuous") {
    var domain = this.domain()
    return gg.scale.continuous().domain(domain).range(domain).ticks(numticks);
  }
  return this.descTicks(numticks);
}
*/

})(gg);
;/**
 * Author : Lisa Zhang
 * Date : 1/15/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";
gg.scale.palette = u.makeClass('gg.scale.palette', gg.scale.discrete);

gg.scale.palette.prototype.init = function(palette) {
  gg.scale.discrete.prototype.init.call(this);
  this._paletteName = palette;
  this._d3scale = null;
  this._colorTable = {};
  this._made = false;
}

gg.scale.palette.prototype.make = function(levels) {
  // set the levels
  if (levels) {
    this._levels = levels; // overridable...
  } else if (!this._levels) {
    this._levels = this._graph.levels(this._aes); // get from graph
  }
  var num_levels = this._levels.length;
  if (this._paletteName && false) { //colorbrewer) {
    // use a colorbrewer pallete if paletteName is given and colorbrewer.js 
    // is included
    this._d3scale = d3.scale.ordinal()
      .domain(this._levels)
      .range(colorbrewer[this.paletteName][num_levels]);
  } else if (num_levels <= 10) {
    this._d3scale = d3.scale.category10()
  } else if (num_levels <= 20) {
    this._d3scale = d3.scale.category20()
  } else {
    this._colorTable = {};
    var i;
    for (i = 0; i < num_levels; i++) {
      this._colorTable[this._levels[i]] = u.getRandomColor();
    }
  }

  this._made = true;
  return this;
}

gg.scale.palette.prototype._apply = function(input) {
  if (!this._made) {
    this.make();
  }
  if (this._d3scale) { // normal case, <= 20 inputs
    return this._d3scale(input);
  }
  // > 20 inputs
  if (this._colorTable[input]) {
    return this._colorTable[input];
  }
  this.warn(404, "Palette scale got value "+input+" that is not in the domain.");
  return null;
}


gg.scale.palette.prototype.toCode = function(indent, fnIndent) {
  var scaleObj = { 'cls' : this._cls_name,
                   'funcs' : [['opts', JSON.stringify(this.getAttr())]] };
  if (this._paletteName) {
    scaleObj.params = [u.qt(this._paletteName)]
  }
  if (this._levels) {
    scaleObj.funcs.push(['domain', JSON.stringify(this._levels)]);
  }
  return u.toCode(indent, fnIndent, scaleObj);
}



})(gg);
;/**
 * Date : 2/7/2012
 * Author : Lisa Zhang
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";
gg.scale.symbol = u.makeClass('gg.scale.symbol', gg.scale.discrete);

gg.scale.symbol.prototype.init = function() {
  gg.scale.discrete.prototype.init.call(this);
  this._symbols = [1,2,3,4,5,6,7,8,9]; //TODO(lisa, 7FEB12): get from symbol.js
  this._numSymbols = this._symbols.length
}

gg.scale.symbol.prototype.make = function(levels) {
  // set the levels
  if (levels) {
    this._levels = levels; // overridable...
  } else if (!this._levels) {
    this._levels = this._graph.levels(this._aes); // get from graph
  }
  this._numLevels = this._levels.length;
  return this;
}

gg.scale.symbol.prototype._apply = function(input) {
  if (!this._d3scale) {
    this.make();
  }
  return this._symbols[_.indexOf(this._levels, input) % this._numSymbols];
}
})(gg);
;/**
 * Date : 1/11/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Time scale.
 * 
 * Author : Jeeyoung Kim
 **/

;(function(gg) {

"use strict";
gg.scale.time = u.makeClass('gg.scale.time', gg.scale.continuous);

gg.scale.time.prototype.init = function() {
  gg.scale.continuous.prototype.init.call(this);
  // date ticks need more space, so we need more spacing.
  this.opts('pixel_per_tick_x', 90);
  this._d3scale = d3.time.scale();
  //this._facetIndex = -1;
}
gg.scale.time.prototype.make = function(facetIndex) {
  this._facetIndex = _.isNumber(facetIndex) ? facetIndex : -1;
  var domain = this._makeDomain();

  this._d3scale.domain(domain).range(this.range())
}

gg.scale.time.prototype.ticks = function(suggestedNumticks) {
  var numticks = this._suggestNumticks(suggestedNumticks);
  var self = this;
  var d3ticks = this._d3scale.ticks(numticks);
  var tickFormat = this._d3scale.tickFormat(numticks);
  var tickObjects = _.map(d3ticks, function(d3tick) {
    return self._tickObject(
      d3tick,
      self.apply(d3tick),
      tickFormat(d3tick) // convert to string
    )
  });
  return tickObjects;
}

gg.scale.time.prototype.maxLabelWidth = function() {
  var range;
  try {
    var domain = this._makeDomain()
    range = domain[1] - domain[0]
  } catch (e) {
    var min = this._graph.min(this._aes);
    var max = this._graph.max(this._aes);
    range = max - min
  }
  var guessNumTicks = 20; // oh what the hell...
  range /= guessNumTicks;

  // going to do some CRAZY heuristics
  if (range <= 1000 * 60 * 60) {
    return u.strlenToPixel(15) // minute level (< an hour)
  }
  if (range <= 1000 *  60 * 60 * 24) {
    return u.strlenToPixel(15) // hour level (< day)
  }
  if (range <= 1000 *  60 * 60 * 24 * 15) {
    return u.strlenToPixel(9) // day level (< half mo)
  }
  if (range <= 1000 *  60 * 60 * 24 * 30 * 4) {
    return u.strlenToPixel(9) // month level OR quarter! (< half year)
  }
  return u.strlenToPixel(4)
}


})(gg);
;/**
 * Date : 1/7/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 **/
;(function(gg) {
"use strict";

gg.scale.time_gradient = u.makeClass('gg.scale.time_gradient', gg.scale.time);

gg.scale.time_gradient.prototype.init = function(low, high) {
  gg.scale.time.prototype.init.call(this);
  this._attr.range_low = low || gg.opts.gradient.low;
  this._attr.range_high = high || gg.opts.gradient.high;
  this._d3scale = null;
}

gg.scale.time.prototype.make = function() {
  this._d3scale = d3.time.scale();
  var domain = this._makeDomain();

  this._d3scale.domain(domain).range(this.range())
}

gg.scale.time_gradient.prototype._apply = function(input) {
  if (!this._d3scale) {
    this.make();
  }
  return this._d3scale(input);
}

})(gg);
;/**
 * Date: 1/25/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Binning statistic.
 *
 * aggregated values are stored in "count" variable.
 */
;(function(gg) {
gg.stats.bin = u.makeClass('gg.stats.bin', gg.stats.sum);

gg.stats.bin.prototype.compute = function(data, context) {
  // no cloning necessary, because we're already cloning the data inside.
  var result = data.getObject(0);
  var len = data.len()
  var y_mapping = context.mapping.y;
  if (y_mapping) {
    var i = 1; // hack for "need" calculation
    while (i < len && _.isNull(result[y_mapping])) {
      result = data.getObject(i);
      i++;
    }
  }

  var metas = this.makeMeta(data);
  result.$sum = data.len();
  return gg.data([result], metas);
}

})(gg);
;/**
 * Date : 2/5/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Statistics for box plot.
 */

;(function(gg){
"use strict";
gg.stats.box = u.makeClass('gg.stats.box', gg.stats.aggregate);

gg.stats.box.prototype.imputeMapping = function(map) {
  var mapping = gg.stats.aggregate.prototype.imputeMapping.call(
    this, map, {'group_stats' : ['group', 'x'] } );
  return _.extend(mapping, {
    y_q0 : '$q0',
    y_q1 : '$q1',
    y_q2 : '$q2',
    y_q3 : '$q3',
    y_q4 : '$q4'
  });
}

gg.stats.box.prototype.compute = function(data, context) {
  var mapping = context.mapping;
  var result = data.getObject(0);
  var yMap = mapping.y;
  var row = data.get(yMap);
  var len = row.length;
  var last = len - 1;
  var sorted = _.sortBy(row, u.identity);

  // STEP1: CALCULATE THE BOX ... 
  var q1 = last / 4;
  var q2 = last / 2;
  var q3 = last / 4 * 3;
  var q1val = (sorted[Math.ceil(q1)] + sorted[Math.floor(q1)]) / 2;
  var q2val = (sorted[Math.ceil(q2)] + sorted[Math.floor(q2)]) / 2;
  var q3val = (sorted[Math.ceil(q3)] + sorted[Math.floor(q3)]) / 2;
  // now calculating q0 and q4 
  var IQR = q3val - q1val;
  var q0 = 0; // min point
  while (sorted[q0] < q2val - 1.5*IQR) { q0++; }
  var q0val = sorted[q0]
  var q4 = last; // max point
  while (sorted[q4] > q2val + 1.5*IQR) { q4--; }
  var q4val = sorted[q4]

  result.$q0 = q0val;
  result.$q1 = q1val;
  result.$q2 = q2val;
  result.$q3 = q3val;
  result.$q4 = q4val;
  u.assertNumber(q0val);
  u.assertNumber(q1val);
  u.assertNumber(q2val);
  u.assertNumber(q3val);
  u.assertNumber(q4val);

  result = [result]

  // STEP 2: ADD ALL THE OUTLIERS
  for (var i = 0; i < row.length; i++) {
    if (row[i] > q4val || row[i] < q0val) {
      result.push(data.getObject(i));
    }
  }
  var metas = this.makeMeta(data);
  return gg.data(result, metas);
}

gg.stats.box.prototype.keys = function() {
  var sup = gg.stats.aggregate.prototype.keys.call(this);
  return sup.concat(['$q0','$q1','$q2','$q3','$q4']);
}

})(gg);
;/**
 * Date: 2/11/2012
 * Author: Lisa Zhang
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Counting statistic.
 *
 * aggregated values are stored in "count" variable.
 */

gg.stats.count = gg.stats.bin;
;/**
 * Date: 1/25/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Identity statistic.
 */

gg.stats.id = u.makeClass('gg.stats.id', gg.stats.base);
;/**
 * Date: 2/22/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 */
;(function(gg){
"use strict";

gg.stats.mean = u.makeClass('gg.stats.mean', gg.stats.sum);

gg.stats.mean.prototype.compute = function(data, context) {
  var mapping = context.mapping;
  var result = data.getObject(0);
  var len = data.len()
  var y_mapping = mapping.y;

  if (y_mapping) {
    var i = 1; // hack for "need" calculation
    while (i < len && _.isNull(result[y_mapping])) {
      result = data.getObject(i);
      i++;
    }
    var sum = u.sum.apply(data.get(y_mapping));
    var mean = sum / data.len();
    result.$sum = mean;
  } else {
    result.$sum = context.attr.y;
  }
  var metas = this.makeMeta(data);
  return gg.data([result], metas);
};

})(gg);
;/**
 * Date: 1/25/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Stacking statistics.
 *
 * partial sums are stored in "partial" variable.
 */
;(function(gg) {
"use strict";
gg.stats.stack = u.makeClass('gg.stats.stack', gg.stats.aggregate);

gg.stats.stack.prototype.compute = function(data, context) {
  var mapping = context.mapping;
  var attr = context.attr;
  // required mapping is "stack".
  var y_mapping = mapping.y;
  // todo - sort by Y.
  var result = [];
  var length = data.len();
  var partial = 0;
  var partial_negative = 0;
  if (y_mapping) {
    var represent = data.getTypeObj(y_mapping).represent;
    var sort_by = mapping.group_stats || y_mapping;
    var sorter = function(x) { return represent(x[sort_by]) };
    var sorted = _.sortBy(data.getObjects(), sorter);
    var reverse = true;
    for (var i = 0 ; i < length; i++) {
      var j = reverse ? length - i - 1 : i;
      var obj = sorted[j];
      var value = obj[y_mapping];
      // skip the negative values.
      if (value < 0) {
        obj.$partial_1 = partial_negative;
        partial_negative += value;
        obj.$partial_2 = partial_negative;
      } else {
        obj.$partial_1 = partial;
        partial += value;
        obj.$partial_2 = partial;
      }
      result.push(obj)
    }
  } else {
    // stack bunch of 1's.
    var delta = 1;
    for (var i = 0 ; i < length; i++) {
      var obj = data.getObject(i);
      obj.$partial_1 = partial;
      partial += delta;
      obj.$partial_2 = partial;
      result.push(obj)
    }
  }
  var metas = this.makeMeta(data);
  return gg.data(result, metas);
}

gg.stats.stack.prototype.imputeMapping = function(map) {
  var mapping = gg.stats.aggregate.prototype.imputeMapping.call(
    this, map, {'group_stats' : 'x' } );
  return _.extend(mapping, {
    'y_1':'$partial_1',
    'y_2':'$partial_2'});
}

gg.stats.stack.prototype.keys = function() {
  var sup = gg.stats.aggregate.prototype.keys.call(this);
  return sup.concat(['$partial_1','$partial_2']);
}

})(gg);
;;(function(gg){
"use strict";

gg.stats.tilestat = u.makeClass('gg.stats.tilestat', gg.stats.base);

gg.stats.tilestat.prototype.entry = function(data, mapping, attr) {
  var groupFunctions = {}
  if (mapping.x) {
    var x = mapping.x;
    groupFunctions.group = createGroupFunction(data.min(x), data.max(x), 10);
    mapping.group = x;
  }
  if (mapping.y) {
    var y = mapping.y;
    groupFunctions.group2 = createGroupFunction(data.min(y), data.may(y), 10);
    mapping.group2 = y;
  }

  return this.group(data, mapping, attr, groupFunctions);
}

var createGroupFunction = function(min, max, bins) {
  if (min >= max) {
    gg.error(900, 'Cannot create a grouping function where min is '+min+' and max is '+max);
  }
  if (bins <= 0) {
    gg.error(901, 'Cannot create a grouping function where number of bins is less than 1.');
  }
  var size = (max - min);
  var width = size / bins;
  var func = function groupFunction(x) {
    // value \in [0, 1]
    var value = (x - min) / size;
    var idx = Math.floor(value * bins);
    if (idx == bins) {
       idx = bins - 1;
    }
    return min + idx * size / bins;
  }
  func.width = width;
  return func;
};

gg.stats.tilestat.prototype.imputeMapping = function(map) {
  var mapping = gg.stats.base.prototype.imputeMapping.call(
    this, map, {'group_stats_1' : 'x' , 'group_stats_2' : 'y'} );
  return _.extend(mapping, { 'y':'$count' });
}

})(gg);
;/**
 * Date: 6/21/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Useful statistics in categorical variable
 * Returns how many unique categorical values there are per group.
 */

;(function(gg){
"use strict";
gg.stats.unique = u.makeClass('gg.stats.unique', gg.stats.aggregate);

gg.stats.unique.prototype.compute = function(data, context) {
  var mapping = context.mapping;
  var attr = context.attr;
  var result = data.getObject(0);
  var key = mapping.y;
  if (key) {
    result.$unique = data.levels(key).length;
  } else {
    result.$unique = 0;
  }

  var metas = this.makeMeta(data);
  return gg.data([result], metas);
};

gg.stats.unique.prototype.imputeMapping = function(map) {
  var mapping = gg.stats.aggregate.prototype.imputeMapping.call(
    this, map, {'group_stats' : 'x' } );
  return _.extend(mapping, {'y_override':'$unique'});
}

gg.stats.unique.prototype.keys = function() {
  var sup = gg.stats.aggregate.prototype.keys.call(this);
  return sup.concat(['$unique']);
}

})(gg);
;/**
 * Date : 2/4/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Author : Jeeyoung Kim
 **/
;(function(gg){
"use strict";
gg.symbol = gg.symbol || {};
// Properties we want to support
// Stroke Color
// Storke Width
// Fill color
// size
// x
// y

var S2SVG = {};
// some mathematical constants. //
var SQRT_2 = Math.sqrt(2)
var SIN_0 = 0
var SIN_60 = Math.sqrt(3) / 2;
var SIN_120 = Math.sqrt(3) / 2;
var SIN_180 = 0
var SIN_240 = -Math.sqrt(3) / 2;
var SIN_300 = -Math.sqrt(3) / 2;

var COS_0 = 1
var COS_60 = 0.5;
var COS_120 = -0.5;
var COS_180 = -1
var COS_240 = -0.5;
var COS_300 = 0.5;

// math needed for pentagram
var INNER_RADIUS = (Math.sqrt(5) - 1) / 4;

var cos10 = function(theta) {
  return Math.cos(Math.PI / 180 * 36 * theta);
}
var sin10 = function(theta) {
  return Math.sin(Math.PI / 180 * 36 * theta);
}

var COS_1_10 = cos10(1);
var COS_2_10 = cos10(2);
var COS_3_10 = cos10(3);
var COS_4_10 = cos10(4);
var COS_5_10 = cos10(5);
var COS_6_10 = cos10(6);
var COS_7_10 = cos10(7);
var COS_8_10 = cos10(8);
var COS_9_10 = cos10(9);

var SIN_1_10 = sin10(1);
var SIN_2_10 = sin10(2);
var SIN_3_10 = sin10(3);
var SIN_4_10 = sin10(4);
var SIN_5_10 = sin10(5);
var SIN_6_10 = sin10(6);
var SIN_7_10 = sin10(7);
var SIN_8_10 = sin10(8);
var SIN_9_10 = sin10(9);

var CIRCLE = 1;
var BOX = 2;
var DIAMOND = 3;
var HEX = 4;
var TRIANGLE = 5;
var TRIANGLE_REVERSE = 6;
var STAR = 7;
var CROSS = 8;
var X = 9;

gg.symbol.CIRCLE = CIRCLE;
gg.symbol.BOX = BOX;
gg.symbol.DIAMOND = DIAMOND;
gg.symbol.HEX = HEX;
gg.symbol.TRIANGLE = TRIANGLE;
gg.symbol.TRIANGLE_REVERSE = TRIANGLE_REVERSE;
gg.symbol.STAR = STAR;
gg.symbol.CROSS = CROSS;
gg.symbol.X = X;

// end of constants
////////////////////////////////////////////////////////////////////////////////

gg.symbol.makePath = function(shape, x, y, r) {
  // render the given shape, as a SVG path.
  var s; // tmp variable.
  if (shape == CIRCLE) {
    // draw circle using svg path commands.
    return [
      ['M', x, y+r],
      ['A', r, r, 0, 1, 1, x, y - r],
      ['A', r, r, 0, 1, 1, x, y + r],
      ['Z']
    ];
  } else if (shape == BOX) {
    return [
      ['M', x+r, y+r],
      ['L', x-r, y+r],
      ['L', x-r, y-r],
      ['L', x+r, y-r],
      ['Z']
    ];
  } else if (shape == DIAMOND) {
    return [
      ['M', x+r, y],
      ['L', x, y+r],
      ['L', x-r, y],
      ['L', x, y-r],
      ['Z']
    ];
  } else if (shape == HEX) {
    return [
      ['M', x + r * SIN_0,   y + r * COS_0],
      ['L', x + r * SIN_60,  y + r * COS_60],
      ['L', x + r * SIN_120, y + r * COS_120],
      ['L', x + r * SIN_180, y + r * COS_180],
      ['L', x + r * SIN_240, y + r * COS_240],
      ['L', x + r * SIN_300, y + r * COS_300],
      ['Z']
    ];
  } else if (shape == TRIANGLE_REVERSE) {
    return [
      ['M', x + r * SIN_0,   y + r * COS_0],
      ['L', x + r * SIN_120, y + r * COS_120],
      ['L', x + r * SIN_240, y + r * COS_240],
      ['Z']
    ];
  } else if (shape == TRIANGLE) {
    return [
      ['M', x + r * SIN_60,  y + r * COS_60],
      ['L', x + r * SIN_180, y + r * COS_180],
      ['L', x + r * SIN_300, y + r * COS_300],
      ['Z']
    ];
  } else if (shape == STAR) {
    s = r * INNER_RADIUS;
    return [
      ['M', x + s * SIN_0, y + s * COS_0],
      ['L', x + r * SIN_1_10, y + r * COS_1_10],
      ['L', x + s * SIN_2_10, y + s * COS_2_10],
      ['L', x + r * SIN_3_10, y + r * COS_3_10],
      ['L', x + s * SIN_4_10, y + s * COS_4_10],
      ['L', x + r * SIN_5_10, y + r * COS_5_10],
      ['L', x + s * SIN_6_10, y + s * COS_6_10],
      ['L', x + r * SIN_7_10, y + r * COS_7_10],
      ['L', x + s * SIN_8_10, y + s * COS_8_10],
      ['L', x + r * SIN_9_10, y + r * COS_9_10],
      ['Z']
    ];
  } else if (shape == CROSS) {
    return [
      ['M', x+r, y],
      ['L', x, y],
      ['L', x, y+r],
      ['L', x, y],
      ['L', x-r, y],
      ['L', x, y],
      ['L', x, y-r],
      ['L', x, y],
      ['Z']
    ];
  } else if (shape == X) {
    s = r * SQRT_2 / 2;
    return [
      ['M', x+s, y+s],
      ['L', x, y],
      ['L', x+s, y-s],
      ['L', x, y],
      ['L', x-s, y+s],
      ['L', x, y],
      ['L', x-s, y-s],
      ['L', x, y],
      ['Z']
    ];
  }
};

})(gg);
;;(function(gg) {
"use strict";

gg.type.category = u.makeClass('gg.type.category', gg.type.base);

gg.type.category.prototype.min = function(values) {
  gg.error(802, "Invalid operation min() on categorical variable.")
}

gg.type.category.prototype.max = function(values) {
  gg.error(802, "Invalid operation max() on categorical variable.")
}

gg.type.category.prototype.coerce = function(value) {
  return gg.type.category.prototype.represent(value);
}

/**
 * Convert the given value to String.
 */
gg.type.category.prototype.represent = function(value) {
  if (_.isString(value)) {
    return value;
  } else if (value == null) {
    // null or undefined;
    return "";
  } else if (_.isNumber(value)) {
    return value.toString();
  }
  return "" + value;
}

gg.type.category.prototype.sort = function(a, b) {
  if (a === b) {
    return 0;
  }
  if (!_.isString(a)) a = "" + a;
  if (!_.isString(b)) b = "" + b;

  var al = a.toLowerCase(), bl = b.toLowerCase();

  if (al === bl) {
    if (a < b) return -1;
    if (a > b) return 1;
    return 0;
  } else {
    if (al < bl) return -1;
    if (al > bl) return 1;
    return 0;
  }
}

gg.type.category.prototype.validate = function(value) {
  return true;
}

gg.type.category.prototype.defaultScale = function(aes) {
  u.assertAes(aes);
  var scale = null;
  var scaleCls = {
    color: gg.scale.palette,
    opacity: gg.scale.discrete,
    radius: gg.scale.discrete,
    stroke: gg.scale.palette,
    strokewidth: gg.scale.discrete,
    symbol: gg.scale.symbol,
    x: gg.scale.discrete,
    y: gg.scale.discrete
  }[aes];

  if (scaleCls) {
    scale = scaleCls();
  } else {
    scale = gg.scale.id();
  }

  this._postProcess(aes, scale);
  return scale;
}

})(gg);
;;(function(gg) {
"use strict";

gg.type.date = u.makeClass('gg.type.date', gg.type.base);

var _extractTime = function(date) {
  if (_.isNumber(date)) {
    return date;
  }
  return date.getTime();
};

gg.type.date.prototype.min = function(values) {
  return this.coerce(
    _.min(_.reject(values, _.isNull), _extractTime)
  );
}

gg.type.date.prototype.max = function(values) {
  return this.coerce(
    _.max(_.reject(values, _.isNull), _extractTime)
  );
}

gg.type.date.prototype.coerce = function(value) {
  if (_.isDate(value)) {
    return value.getTime();
  } else if (_.isNumber(value)) {
    return value;
  }
  return Number(value);
}

gg.type.date.prototype.represent = function(value) {
  if (_.isNumber(value)) {
    return value;
  } if (_.isDate(value)) {
    return value.getTime();
  }
  return null;
}

gg.type.date.prototype.validate = function(value) {
  return _.isNumber(value) || _.isDate(value);
}

gg.type.date.prototype.defaultScale = function(aes) {
  u.assertAes(aes);
  var scale = null;
  var scaleCls = {
    color: gg.scale.time_gradient,
    opacity: gg.scale.time,
    radius: gg.scale.time,
    stroke: gg.scale.time_gradient,
    strokewidth: gg.scale.time,
    symbol: gg.scale.symbol,
    x: gg.scale.time,
    y: gg.scale.time
  }[aes];

  if (scaleCls) {
    scale = scaleCls();
  } else {
    scale = gg.scale.id();
  }

  this._postProcess(aes, scale);
  return scale;
}

})(gg);
;;(function(gg) {
"use strict";

gg.type.number = u.makeClass('gg.type.number', gg.type.base);

gg.type.number.prototype.min = gg.type.date.prototype.min;

gg.type.number.prototype.max = gg.type.date.prototype.max;

gg.type.number.prototype.coerce = function(value) {
  if (_.isDate(value)) {
    return value.getTime();
  } else if (_.isNumber(value)) {
    return value;
  }
  return Number(value);
}

gg.type.number.prototype.represent = gg.type.date.prototype.represent;

gg.type.number.prototype.validate = function(value) {
  return _.isNumber(value);
}

gg.type.number.prototype.sort = function(a, b) {
  if (a === b) {
    return 0;
  }

  if (a == null) {
    return -1;
  } else if (b == null) {
    return 1
  }

  if (a < b) {
    return -1;
  } else if (a > b) {
    return 1;
  }
  return 0;
}

gg.type.number.prototype.defaultScale = function(aes) {
  u.assertAes(aes);
  var scale = null;
  var scaleCls = {
    color: gg.scale.gradient,
    opacity: gg.scale.continuous,
    radius: gg.scale.continuous,
    stroke: gg.scale.gradient,
    strokewidth: gg.scale.continuous,
    symbol: gg.scale.symbol,
    x: gg.scale.continuous,
    y: gg.scale.continuous
  }[aes];

  if (scaleCls) {
    scale = scaleCls();
  } else {
    scale = gg.scale.id();
  }

  this._postProcess(aes, scale);
  return scale;
}

})(gg);
;;(function(gg) {
"use strict";

gg.type.unknown = u.makeClass('gg.type.unknown', gg.type.base);

gg.type.unknown.prototype.min = function(values) {
  return null;
}

gg.type.unknown.prototype.max = function(values) {
  return null;
}

gg.type.unknown.prototype.coerce = function(value) {
  return value
}

gg.type.unknown.prototype.represent = function(value) {
  return value;
}

gg.type.unknown.prototype.validate = function(value) {
  return true;
}

gg.type.unknown.prototype.defaultScale = function(aes) {
  gg.error(801, "Attempted to call defaultScale() on unknown type.");
}

})(gg);
;/**
 * Date : 2/11/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 */

var packageFunction = function(gg, obj) {
  obj = obj || {};

  var pkg = function(fromObj, names) {
    if (!fromObj) {
      gg.error(1, "Attempting to package an object that does not exist.")
    }
    var len = names.length;
    for (var i = 0; i < len; i++) {
      var name = names[i];
      if (obj[name]) {
        gg.error(3, "gg."+name+" is already set.");
      } else {
        if (!fromObj[name]) {
          gg.error(2, 'Failed while packing ' + name + '.');
        }
        obj[name] = fromObj[name]
      }
    }
  }

  pkg(gg.coord, ['cart', 'polar']);
  pkg(gg.facet, ['grid', 'wrap']);
  pkg(gg.guide, ['axis', 'legend']);
  pkg(gg.layer, ['area', 'bar', 'box', 'line', 'path', 'point', 'text', 'tile']);
  pkg(gg.scale, ['continuous', 'discrete', 'gradient', 'id', 'palette', 'time']);
  pkg(gg.stats, ['bin', 'stack', 'count']);
  return obj;
};

packageFunction(gg, gg);
;/**
 * Date: 3/14/2012
 * Copyright 2012 Beta Cubed. All rights reserved.
 *
 * Partial sum, with ratio between them calculated.
 */
;(function(gg) {
"use strict";
gg.stats.ratio = u.makeClass('gg.stats.ratio', gg.stats.stack);

gg.stats.ratio.prototype.compute = function(data, context) {
  var mapping = context.mapping;
  var attr = context.attr;
  var y_mapping = mapping.y;
  // todo - sort by Y.
  var result = [];
  var length = data.len();
  var partial = 0;
  if (y_mapping) {
    var total = u.sum.apply(data.get(y_mapping));
    var represent = data.getTypeObj(y_mapping).represent;
    var sorter = function(x) { return represent(x[y_mapping]) };
    var sorted = _.sortBy(data.getObjects(), sorter);
    var reverse = true;
    for (var i = 0 ; i < length; i++) {
      var j = reverse ? length - i - 1 : i;
      var obj = sorted[j];
      var delta;
      if (total == 0) { delta = 1 / length;
      } else { delta = (obj[y_mapping] / total); }
      obj.$partial_1 = partial;
      partial += delta;
      obj.$partial_2 = partial;
      obj[y_mapping] = delta;
      result.push(obj)
    }
  } else {
    var delta = 1 / length;
    // stack bunch of 1's.
    for (var i = 0 ; i < length; i++) {
      var obj = data.getObject(i);
      obj.$partial_1 = partial;
      partial += delta;
      obj.$partial_2 = partial;
      result.push(obj)
    }
  }
  var metas = this.makeMeta(data);
  return gg.data(result, metas);
}

})(gg);
;// capture other libraries.
var _ = window._;
var d3 = window.d3;
;
return gg;})();