Package org.ejml.dense.block

Class MatrixOps_DDRB

java.lang.Object

org.ejml.dense.block.MatrixOps_DDRB

public class MatrixOps_DDRB
extends java.lang.Object

Various operations on DMatrixRBlock.

Constructor Summary

Constructors

Constructor	Description
MatrixOps_DDRB()

Method Summary

Modifier and Type	Method	Description
static boolean	blockAligned(int blockLength, org.ejml.data.DSubmatrixD1 A)	Checks to see if the submatrix has its boundaries along inner blocks.
static void	checkIdenticalShape(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock B)	Checks to see if the two matrices have an identical shape an block size.
static org.ejml.data.DMatrixRMaj	convert(org.ejml.data.DMatrixRBlock src, org.ejml.data.DMatrixRMaj dst)	Converts a row major block matrix into a row major matrix.
static org.ejml.data.DMatrixRBlock	convert(org.ejml.data.DMatrixRMaj A)
static org.ejml.data.DMatrixRBlock	convert(org.ejml.data.DMatrixRMaj A, int blockLength)
static void	convert(org.ejml.data.DMatrixRMaj src, org.ejml.data.DMatrixRBlock dst)	Converts a row major matrix into a row major block matrix.
static void	convertBlockToRow(int numRows, int numCols, int blockLength, double[] data, double[] tmp)	Converts matrix data stored is a block row major format into a row major format in place.
static void	convertRowToBlock(int numRows, int numCols, int blockLength, double[] data, double[] tmp)	Converts matrix data stored is a row major format into a block row major format in place.
static void	convertTranSrc(org.ejml.data.DMatrixRMaj src, org.ejml.data.DMatrixRBlock dst)	Converts the transpose of a row major matrix into a row major block matrix.
static void	copyTriangle(boolean upper, org.ejml.data.DMatrixRBlock src, org.ejml.data.DMatrixRBlock dst)	Copies either the upper or lower triangular portion of src into dst.
static org.ejml.data.DMatrixRBlock	createRandom(int numRows, int numCols, double min, double max, java.util.Random rand)
static org.ejml.data.DMatrixRBlock	createRandom(int numRows, int numCols, double min, double max, java.util.Random rand, int blockLength)
static void	extractAligned(org.ejml.data.DMatrixRBlock src, org.ejml.data.DMatrixRBlock dst)	Extracts a matrix from src into dst.
static org.ejml.data.DMatrixRBlock	identity(int numRows, int numCols, int blockLength)	Returns a new matrix with ones along the diagonal and zeros everywhere else.
static boolean	isEquals(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock B)
static boolean	isEquals(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock B, double tol)
static void	mult(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock B, org.ejml.data.DMatrixRBlock C)
static void	multTransA(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock B, org.ejml.data.DMatrixRBlock C)
static void	multTransB(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock B, org.ejml.data.DMatrixRBlock C)
static void	set(org.ejml.data.DMatrixRBlock A, double value)	Sets every element in the matrix to the specified value. aij = value
static void	setIdentity(org.ejml.data.DMatrixRBlock A)	Sets the value of A to all zeros except along the diagonal.
static org.ejml.data.DMatrixRBlock	transpose(org.ejml.data.DMatrixRBlock A, org.ejml.data.DMatrixRBlock A_tran)	Transposes a block matrix.
static void	zeroTriangle(boolean upper, org.ejml.data.DMatrixRBlock A)	Sets either the upper or low triangle of a matrix to zero

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixOps_DDRB

public MatrixOps_DDRB()

Method Detail

convert

public static void convert(org.ejml.data.DMatrixRMaj src,
                           org.ejml.data.DMatrixRBlock dst)

Converts a row major matrix into a row major block matrix.

Parameters:

src - Original DMatrixRMaj. Not modified.

dst - Equivalent DMatrixRBlock. Modified.

convertRowToBlock

public static void convertRowToBlock(int numRows,
                                     int numCols,
                                     int blockLength,
                                     double[] data,
                                     double[] tmp)

Converts matrix data stored is a row major format into a block row major format in place.

Parameters:

numRows - number of rows in the matrix.

numCols - number of columns in the matrix.

blockLength - Block size in the converted matrix.

data - Matrix data in a row-major format. Modified.

tmp - Temporary data structure that is to be the size of a block row.

convert

public static org.ejml.data.DMatrixRMaj convert(org.ejml.data.DMatrixRBlock src,
                                                org.ejml.data.DMatrixRMaj dst)

Converts a row major block matrix into a row major matrix.

Parameters:

src - Original DMatrixRBlock.. Not modified.

dst - Equivalent DMatrixRMaj. Modified.

convertBlockToRow

public static void convertBlockToRow(int numRows,
                                     int numCols,
                                     int blockLength,
                                     double[] data,
                                     double[] tmp)

Converts matrix data stored is a block row major format into a row major format in place.

Parameters:

numRows - number of rows in the matrix.

numCols - number of columns in the matrix.

blockLength - Block size in the converted matrix.

data - Matrix data in a block row-major format. Modified.

tmp - Temporary data structure that is to be the size of a block row.

convertTranSrc

public static void convertTranSrc(org.ejml.data.DMatrixRMaj src,
                                  org.ejml.data.DMatrixRBlock dst)

Converts the transpose of a row major matrix into a row major block matrix.

Parameters:

src - Original DMatrixRMaj. Not modified.

dst - Equivalent DMatrixRBlock. Modified.

mult

public static void mult(org.ejml.data.DMatrixRBlock A,
                        org.ejml.data.DMatrixRBlock B,
                        org.ejml.data.DMatrixRBlock C)

multTransA

public static void multTransA(org.ejml.data.DMatrixRBlock A,
                              org.ejml.data.DMatrixRBlock B,
                              org.ejml.data.DMatrixRBlock C)

multTransB

public static void multTransB(org.ejml.data.DMatrixRBlock A,
                              org.ejml.data.DMatrixRBlock B,
                              org.ejml.data.DMatrixRBlock C)

transpose

public static org.ejml.data.DMatrixRBlock transpose(org.ejml.data.DMatrixRBlock A,
                                                    org.ejml.data.DMatrixRBlock A_tran)

Transposes a block matrix.

Parameters:

A - Original matrix. Not modified.

A_tran - Transposed matrix. Modified.

createRandom

public static org.ejml.data.DMatrixRBlock createRandom(int numRows,
                                                       int numCols,
                                                       double min,
                                                       double max,
                                                       java.util.Random rand)

createRandom

public static org.ejml.data.DMatrixRBlock createRandom(int numRows,
                                                       int numCols,
                                                       double min,
                                                       double max,
                                                       java.util.Random rand,
                                                       int blockLength)

convert

public static org.ejml.data.DMatrixRBlock convert(org.ejml.data.DMatrixRMaj A,
                                                  int blockLength)

convert

public static org.ejml.data.DMatrixRBlock convert(org.ejml.data.DMatrixRMaj A)

isEquals

public static boolean isEquals(org.ejml.data.DMatrixRBlock A,
                               org.ejml.data.DMatrixRBlock B)

isEquals

public static boolean isEquals(org.ejml.data.DMatrixRBlock A,
                               org.ejml.data.DMatrixRBlock B,
                               double tol)

zeroTriangle

public static void zeroTriangle(boolean upper,
                                org.ejml.data.DMatrixRBlock A)

Sets either the upper or low triangle of a matrix to zero

copyTriangle

public static void copyTriangle(boolean upper,
                                org.ejml.data.DMatrixRBlock src,
                                org.ejml.data.DMatrixRBlock dst)

Copies either the upper or lower triangular portion of src into dst. Dst can be smaller than src.

Parameters:

upper - If the upper or lower triangle is copied.

src - The source matrix. Not modified.

dst - The destination matrix. Modified.

set

public static void set(org.ejml.data.DMatrixRBlock A,
                       double value)

Sets every element in the matrix to the specified value.

a_ij = value

Parameters:

A - A matrix whose elements are about to be set. Modified.

value - The value each element will have.

setIdentity

public static void setIdentity(org.ejml.data.DMatrixRBlock A)

Sets the value of A to all zeros except along the diagonal.

Parameters:

A - Block matrix.

identity

public static org.ejml.data.DMatrixRBlock identity(int numRows,
                                                   int numCols,
                                                   int blockLength)

Returns a new matrix with ones along the diagonal and zeros everywhere else.

Parameters:

numRows - Number of rows.

numCols - NUmber of columns.

blockLength - Block length.

Returns:

An identify matrix.

checkIdenticalShape

public static void checkIdenticalShape(org.ejml.data.DMatrixRBlock A,
                                       org.ejml.data.DMatrixRBlock B)

Checks to see if the two matrices have an identical shape an block size.

Parameters:

A - Matrix.

B - Matrix.

extractAligned

public static void extractAligned(org.ejml.data.DMatrixRBlock src,
                                  org.ejml.data.DMatrixRBlock dst)

Extracts a matrix from src into dst. The submatrix which is copied has its initial coordinate at (0,0) and ends at (dst.numRows,dst.numCols). The end rows/columns must be aligned along blocks or else it will silently screw things up.

Parameters:

src - Matrix which a submatrix is being extracted from. Not modified.

dst - Where the submatrix is written to. Its rows and columns be less than or equal to 'src'. Modified.

blockAligned

public static boolean blockAligned(int blockLength,
                                   org.ejml.data.DSubmatrixD1 A)

Checks to see if the submatrix has its boundaries along inner blocks.

Parameters:

blockLength - Size of an inner block.

A - Submatrix.

Returns:

If it is block aligned or not.