Classes | Defines | Functions

# ogr_spatialref.h File Reference

Coordinate systems services. More...

`#include "ogr_srs_api.h"`

Go to the source code of this file.

## Classes
class | OGR_SRSNode
| Objects of this class are used to represent value nodes in the parsed representation of the WKT SRS format. More...
class | OGRSpatialReference
| This class respresents a OpenGIS Spatial Reference System, and contains methods for converting between this object organization and well known text (WKT) format. More...
class | OGRCoordinateTransformation
| Interface for transforming between coordinate systems. More...
## Defines
#define | USGS_ANGLE_DECIMALDEGREES 0
#define | USGS_ANGLE_PACKEDDMS TRUE
#define | USGS_ANGLE_RADIANS 2
## Functions
OGRCoordinateTransformation * | OGRCreateCoordinateTransformation (OGRSpatialReference *poSource, OGRSpatialReference *poTarget)
| Create transformation object.

## Detailed Description

Coordinate systems services.

## Function Documentation

OGRCoordinateTransformation* OGRCreateCoordinateTransformation | ( | OGRSpatialReference * | poSource,
|  | OGRSpatialReference * | poTarget |
| ) |  |  |

Create transformation object.

This is the same as the C function OCTNewCoordinateTransformation().

Input spatial reference system objects are assigned by copy (calling clone() method) and no ownership transfer occurs.

The delete operator, or OCTDestroyCoordinateTransformation() should be used to destroy transformation objects.

The PROJ.4 library must be available at run-time.

Parameters:

  | poSource | source spatial reference system.
  | poTarget | target spatial reference system.

Returns:
  NULL on failure or a ready to use transformation object.

Generated for GDAL by 1.7.1.