Package org.gdal.osr

Class CoordinateTransformation

java.lang.Object

org.gdal.osr.CoordinateTransformation

public class CoordinateTransformation
extends java.lang.Object

Object for transforming between coordinate systems.

The CoordinateTransformation class is a binding for the C++ OGRCoordinateTransformation class.

Constructor Summary

Constructors

Constructor	Description
CoordinateTransformation(SpatialReference src, SpatialReference dst)	Deprecated.
CoordinateTransformation(SpatialReference src, SpatialReference dst, CoordinateTransformationOptions options)

Method Summary

Modifier and Type	Method	Description
static CoordinateTransformation	CreateCoordinateTransformation(SpatialReference src, SpatialReference dst)	Create transformation object.
void	delete()
void	TransformPoint(double[] inout)	Transform point from source to destination space.
void	TransformPoint(double[] argout, double x, double y)	Transform point from source to destination space.
void	TransformPoint(double[] argout, double x, double y, double z)	Transform point from source to destination space.
void	TransformPoint(double[] argout, double x, double y, double z, double t)
double[]	TransformPoint(double x, double y)	Transform point from source to destination space.
double[]	TransformPoint(double x, double y, double z)	Transform point from source to destination space.
void	TransformPoints(double[][] pointArray)	Transform points from source to destination space.
int[]	TransformPointsWithErrorCodes(double[][] pointArray)	Transform points from source to destination space.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CoordinateTransformation

public CoordinateTransformation(SpatialReference src,
                                SpatialReference dst)

Deprecated.

Create transformation object.

Caution: the coordinate transformation object returned can be in a non working state if no coordinate transformation can be established between src and dst, and calling other methods on it can result in the process termination. If using GDAL 1.10 or above, it is recommended to use the CreateCoordinateTransformation(org.gdal.osr.SpatialReference, org.gdal.osr.SpatialReference) method instead.

For GDAL 1.9.X or below, you might use the following snippet :

 gdal.PushErrorHandler( "CPLQuietErrorHandler" );
 hTransform = new CoordinateTransformation(src, dst);
 gdal.PopErrorHandler();
 if (gdal.GetLastErrorMsg().indexOf("Unable to load PROJ.4 library") != -1)
    hTransform = null;
 

Parameters:

src - source spatial reference system.

dst - target spatial reference system.

See Also:

CreateCoordinateTransformation(org.gdal.osr.SpatialReference, org.gdal.osr.SpatialReference)

CoordinateTransformation

public CoordinateTransformation(SpatialReference src,
                                SpatialReference dst,
                                CoordinateTransformationOptions options)

Method Detail

delete

public void delete()

TransformPoint

public double[] TransformPoint(double x,
                               double y,
                               double z)

Transform point from source to destination space.

Parameters:

x - input x value

y - input y value

Returns:

the transformed coordinates

Since:

Java bindings 1.7.0

TransformPoint

public double[] TransformPoint(double x,
                               double y)

Transform point from source to destination space.

Parameters:

x - input x value

y - input y value

Returns:

the transformed coordinates

Since:

Java bindings 1.7.0

CreateCoordinateTransformation

public static CoordinateTransformation CreateCoordinateTransformation(SpatialReference src,
                                                                      SpatialReference dst)

Create transformation object.

Parameters:

src - source spatial reference system.

dst - target spatial reference system.

Returns:

a new CoordinateTransformation object, or null in case of failure

Since:

GDAL 1.10

TransformPoint

public void TransformPoint(double[] inout)

Transform point from source to destination space.

The provided array will be modified in place.

Parameters:

inout - an array of 3 doubles

TransformPoint

public void TransformPoint(double[] argout,
                           double x,
                           double y,
                           double z)

Transform point from source to destination space.

Parameters:

argout - array of 3 double values where the transformed coordinates will be put.

x - input x value

y - input y value

z - input z value

TransformPoint

public void TransformPoint(double[] argout,
                           double x,
                           double y)

Transform point from source to destination space.

Parameters:

argout - array of 3 double values where the transformed coordinates will be put.

x - input x value

y - input y value

Since:

Java bindings 1.7.0

TransformPoint

public void TransformPoint(double[] argout,
                           double x,
                           double y,
                           double z,
                           double t)

TransformPoints

public void TransformPoints(double[][] pointArray)

Transform points from source to destination space.

The provided array will be modified in place.

Parameters:

pointArray - an array of coordinates. Each coordinate can be either 2D, 3D or 4D

TransformPointsWithErrorCodes

public int[] TransformPointsWithErrorCodes(double[][] pointArray)

Transform points from source to destination space.

The provided array will be modified in place.

Parameters:

pointArray - an array of coordinates. Each coordinate can be either 2D, 3D or 4D

Returns:

an array of integer with the error codes for each coordinate. 0 means no error.