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# GDAL_GCP Struct Reference

Ground Control Point. More...

`#include <gdal.h>`

List of all members.

## Public Attributes
char* | pszId
| Unique identifier, often numeric.
char* | pszInfo
| Informational message or "".
double | dfGCPPixel
| Pixel (x) location of GCP on raster.
double | dfGCPLine
| Line (y) location of GCP on raster.
double | dfGCPX
| X position of GCP in georeferenced space.
double | dfGCPY
| Y position of GCP in georeferenced space.
double | dfGCPZ
| Elevation of GCP, or zero if not known.

## Detailed Description

Ground Control Point.

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

- gdal.h