Class MathCRMatrixD

java.lang.Object

org.ddogleg.chainrule.MathCRMatrixD

All Implemented Interfaces:

MathCRMatrix<double[]>

public class MathCRMatrixD
extends Object
implements MathCRMatrix<double[]>

Various math operations that can be formed on CRMatrix

Constructor Summary

Constructors

Constructor	Description
MathCRMatrixD()

Method Summary

Modifier and Type	Method	Description
void	addTo(CRMatrix<double[]> dst, CRMatrix<double[]> src)	Adds src into dst.
CRArray<double[]>	createArray(int length)	Allocates a new array with the specified length
CRMatrix<double[]>	createMatrix(int rows, int cols)	Creates a new matrix with the specified shape
void	diag(double value, CRMatrix<double[]> m)	Fills the diagonal elements with the specified value
void	fill(CRMatrix<double[]> m, double value)	Fills every element with the specified value
boolean	isUncountable(CRMatrix<double[]> m)	Returns true if the matrix contains at least one uncountable number
void	mult(CRMatrix<double[]> a, CRMatrix<double[]> b, CRMatrix<double[]> out)	Performs a matrix multiplication between a and b.
CRArray<double[]>	random(Random rand, double min, double max, int length)	Creates a random array
CRMatrix<double[]>	random(Random rand, double min, double max, int rows, int cols)	Creates a new random matrix
void	random(Random rand, double min, double max, CRMatrix<double[]> output)	Fills the matrix with uniform random values.
void	zero(CRArray<double[]> m, int length)	Fills all elements in the array with zero

Methods inherited from class Object

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

Methods inherited from interface MathCRMatrix

zero

Constructor Details

MathCRMatrixD

public MathCRMatrixD()

Method Details

mult

public void mult(CRMatrix<double[]> a,
 CRMatrix<double[]> b,
 CRMatrix<double[]> out)

Performs a matrix multiplication between a and b. Results are stored in 'out'. The shape of 'out' is dynamically computed and adjusted.

Specified by:

mult in interface MathCRMatrix<double[]>

addTo

public void addTo(CRMatrix<double[]> dst,
 CRMatrix<double[]> src)

Description copied from interface: MathCRMatrix

Adds src into dst. Needed when a value feeds more than one consumer and the derivatives arriving from each have to be summed

Specified by:

addTo in interface MathCRMatrix<double[]>

diag

public void diag(double value,
 CRMatrix<double[]> m)

Description copied from interface: MathCRMatrix

Fills the diagonal elements with the specified value

Specified by:

diag in interface MathCRMatrix<double[]>

fill

public void fill(CRMatrix<double[]> m,
 double value)

Description copied from interface: MathCRMatrix

Fills every element with the specified value

Specified by:

fill in interface MathCRMatrix<double[]>

zero

public void zero(CRArray<double[]> m,
 int length)

Description copied from interface: MathCRMatrix

Fills all elements in the array with zero

Specified by:

zero in interface MathCRMatrix<double[]>

random

public void random(Random rand,
 double min,
 double max,
 CRMatrix<double[]> output)

Fills the matrix with uniform random values.

Specified by:

random in interface MathCRMatrix<double[]>

Parameters:

rand - The random number generate

min - Minimum value from RNG

max - Maximum value from RNG

output - Matrix to fill in with random values

random

public CRMatrix<double[]> random(Random rand,
 double min,
 double max,
 int rows,
 int cols)

Creates a new random matrix

Specified by:

random in interface MathCRMatrix<double[]>

random

public CRArray<double[]> random(Random rand,
 double min,
 double max,
 int length)

Description copied from interface: MathCRMatrix

Creates a random array

Specified by:

random in interface MathCRMatrix<double[]>

isUncountable

public boolean isUncountable(CRMatrix<double[]> m)

Description copied from interface: MathCRMatrix

Returns true if the matrix contains at least one uncountable number

Specified by:

isUncountable in interface MathCRMatrix<double[]>

createArray

public CRArray<double[]> createArray(int length)

Description copied from interface: MathCRMatrix

Allocates a new array with the specified length

Specified by:

createArray in interface MathCRMatrix<double[]>

createMatrix

public CRMatrix<double[]> createMatrix(int rows,
 int cols)

Description copied from interface: MathCRMatrix

Creates a new matrix with the specified shape

Specified by:

createMatrix in interface MathCRMatrix<double[]>