org.opengis.referencing.operation

Interface Matrix

All Superinterfaces:

java.lang.Cloneable

@UML(identifier="PT_Matrix",
     specification=OGC_01009)
public interface Matrix
extends Cloneable

A two dimensional array of numbers. Row and column numbering begins with zero. The API for this interface matches closely the API in various matrix implementations available in Java3D, which should enable straightforward implementations. Java3D provides matrix for the general case and optimized versions for 3×3 and 4×4 cases, which are quite common in a transformation package.

Since:

GeoAPI 1.0

See Also:

Matrix3d, Matrix4d, GMatrix, AffineTransform, javax.media.jai.PerspectiveTransform, Transform3D, Jama matrix, JSR-83 Multiarray package

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Returns a clone of this matrix.
double	getElement(int row, int column) Retrieves the value at the specified row and column of this matrix.
int	getNumCol() Returns the number of colmuns in this matrix.
int	getNumRow() Returns the number of rows in this matrix.
boolean	isIdentity() Returns true if this matrix is an identity matrix.
void	setElement(int row, int column, double value) Modifies the value at the specified row and column of this matrix.

Method Detail

getNumRow

@Extension
int getNumRow()

Returns the number of rows in this matrix.

Returns:

The number of rows in this matrix.

getNumCol

@Extension
int getNumCol()

Returns the number of colmuns in this matrix.

Returns:

The number of columns in this matrix.

getElement

@Extension
double getElement(int row,
                             int column)

Retrieves the value at the specified row and column of this matrix.

Parameters:

row - The row number to be retrieved (zero indexed).

column - The column number to be retrieved (zero indexed).

Returns:

The value at the indexed element.

setElement

@Extension
void setElement(int row,
                           int column,
                           double value)

Modifies the value at the specified row and column of this matrix.

Parameters:

row - The row number to be retrieved (zero indexed).

column - The column number to be retrieved (zero indexed).

value - The new matrix element value.

isIdentity

@Extension
boolean isIdentity()

Returns true if this matrix is an identity matrix.

Returns:

true if this matrix is an identity matrix.

clone

java.lang.Object clone()

Returns a clone of this matrix.

See Also:

Object.clone()