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# GDAL_GCP Struct Reference

`#include <gdal.h>`

List of all members.

## Public Attributes
char * | pszId
char * | pszInfo
double | dfGCPPixel
double | dfGCPLine
double | dfGCPX
double | dfGCPY
double | dfGCPZ

## Detailed Description

Ground Control Point

## Member Data Documentation

char* GDAL_GCP::pszId

Unique identifier, often numeric

char* GDAL_GCP::pszInfo

Informational message or ""

double GDAL_GCP::dfGCPPixel

Pixel (x) location of GCP on raster

double GDAL_GCP::dfGCPLine

Line (y) location of GCP on raster

double GDAL_GCP::dfGCPX

X position of GCP in georeferenced space

double GDAL_GCP::dfGCPY

Y position of GCP in georeferenced space

double GDAL_GCP::dfGCPZ

Elevation of GCP, or zero if not known

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

- gdal.h

Generated for GDAL by 1.5.1.