OGR
Classes | Functions
ogr_spatialref.h File Reference
#include "ogr_srs_api.h"

Go to the source code of this file.

Classes

class  OGR_SRSNode
 
class  OGRSpatialReference
 
class  OGRCoordinateTransformation
 

Functions

OGRCoordinateTransformationOGRCreateCoordinateTransformation (OGRSpatialReference *poSource, OGRSpatialReference *poTarget)
 

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
poSourcesource spatial reference system.
poTargettarget spatial reference system.
Returns
NULL on failure or a ready to use transformation object.

References CPLError().

Referenced by OCTNewCoordinateTransformation(), OGRUnionLayer::ResetReading(), and OGRGeometry::transformTo().


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