See: Description
Interface | Description |
---|---|
LinearTransform |
A usually affine, or otherwise a projective transform, which convert coordinates using only linear equations.
|
MathTransformProvider |
An object capable to create
MathTransform instances from given parameter values. |
Class | Description |
---|---|
AbstractMathTransform |
Provides a default implementation for most methods required by the
MathTransform interface. |
AbstractMathTransform1D |
Base class for math transforms that are known to be one-dimensional in all cases.
|
AbstractMathTransform2D |
Base class for math transforms that are known to be two-dimensional in all cases.
|
ContextualParameters |
The parameters that describe a sequence of
normalize → non-linear kernel → denormalize transforms as a whole.
|
DefaultMathTransformFactory |
Low level factory for creating math transforms.
|
MathTransforms |
Utility methods creating or working on
MathTransform instances. |
PassThroughTransform |
Transform which passes through a subset of ordinates to another transform.
|
TransferFunction |
The function converting raster sample values to geophysics values.
|
Enum | Description |
---|---|
IterationStrategy |
Strategy for iterating over the point arrays given to
AbstractMathTransform.transform(…) methods. |
MathTransform
provides a single API for
coordinate conversions or transformations, including map projections.
Each MathTransform
instances can:
Shape
(MathTransform2D
only),MathTransform
are truly n-dimensional, but specialized implementations
for 1D and 2D cases are provided for performance reasons or for inter-operability with Java2D.
In the 2D case, Apache SIS provides instances of the standard AffineTransform
class when possible.
This package does not include map projections, which are a special kind of transforms defined in their own projection package.
MathTransform
instances can be created either directly or indirectly.
The recommended way is the indirect one: first
find the coordinate operation
(generally from a pair of source and target CRS), then invoke
CoordinateOperation.getMathTransform()
.
However sophisticated users can also create math transforms explicitely from a group of parameter values
using the math
transform factory.
MathTransform
usually performs conversions or transformations from points given in a
source coordinate reference system to coordinate values for the same points in the
target coordinate reference system. However the conversions are not necessarily between CRS;
a MathTransform
can also be used for converting the sample values in a raster for example.
Such kind of transforms are named transfer functions.Defined in the sis-referencing
module
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