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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