Interface  Description 

LinearTransform 
Interface for linear
MathTransform s. 
Class  Description 

AbstractCoordinateOperation 
Establishes an association between a source and a target coordinate reference system,
and provides a transform for transforming coordinates in
the source CRS to coordinates in the target CRS.

AbstractCoordinateOperationFactory 
Base class for coordinate operation factories.

AuthorityBackedFactory 
A coordinate operation factory extended with the extra
informations provided by an authority factory.

BufferedCoordinateOperationFactory 
Caches the coordinate operations created by an other factory.

DefaultConcatenatedOperation 
An ordered sequence of two or more single coordinate operations.

DefaultConicProjection 
Base class for conical map projections.

DefaultConversion 
An operation on coordinates that does not include any change of Datum.

DefaultCoordinateOperationFactory 
Creates coordinate operations.

DefaultCylindricalProjection 
Base class for cylindrical map projections.

DefaultMathTransformFactory 
Low level factory for creating math transforms.

DefaultOperation 
A parameterized mathematical operation on coordinates that transforms or converts
coordinates to another coordinate reference system.

DefaultOperationMethod 
Definition of an algorithm used to perform a coordinate operation.

DefaultPassThroughOperation 
A passthrough operation specifies that a subset of a coordinate tuple is subject to a specific
coordinate operation.

DefaultPlanarProjection 
Base class for for azimuthal (or planar) map projections.

DefaultProjection 
A conversion transforming
(longitude,latitude) coordinates to cartesian coordinates
(x,y).

DefaultSingleOperation 
A single (not concatenated) coordinate operation.

DefaultTransformation 
An operation on coordinates that usually includes a change of Datum.

DefiningConversion 
A conversion used for the definition of a derived CRS (including projections).

MathTransformProvider  
MathTransformProvider.Delegate 
The result of a call to
createMathTransform . 
Exception  Description 

TransformPathNotFoundException 
Thrown when a transformation can't be performed because no path from
source CRS to
target CRS has been found.

The math transform factory search for all math transforms in the class path, not just Geotools implementations. To be found, math transforms must be registered as services in its JAR file, more specifically in the following JAR entry:
METAINF/services/org.geotools.referencing.operation.MathTransformProvider
DefaultMathTransformFactory
can be run from the command line in order to gets the list of all registered math
transform, as in the example below:
java org.geotools.referencing.operation.DefaultMathTransformFactory
This will print a table with the name of all math transforms. If a name from this list is specified as a commandline argument, then the parameters expected by the nammed math transform will be listed. The example below prints the arguments expected by the "Mercator 1SP" map projection:
java org.geotools.referencing.operation.DefaultMathTransformFactory Mercator_1SP
Note that instead of the "Mercator_1SP"
argument,
alias can be specified as well. For example, "EPSG:9804"
or just
"9804"
will produce the same result than above.
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