NTV2_EXTENT Struct Reference

Data Fields
double	wlon
double	slat
double	elon
double	nlat

Detailed Description

NTv2 Extent struct

This struct defines the lower-left and the upper-right corners of an extent to use to cut down the area defined by a grid file.

Unlike NTv2 files, this struct uses the standard notation of negative-west / positive-east and values are always in degrees.

Since shifts are usually very small (on the order of fractions of a second), it doesn't matter which datum the values are on.

Note that this struct is used only by this API, and is not part of the NTv2 specification.

Field Documentation

double NTV2_EXTENT::elon

East longitude (degrees)

double NTV2_EXTENT::nlat

North latitude (degrees)

double NTV2_EXTENT::slat

South latitude (degrees)

double NTV2_EXTENT::wlon

West longitude (degrees)

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The documentation for this struct was generated from the following file:

• libntv2.h