mikera.matrixx.solve.impl

Class CholeskySolver

java.lang.Object

mikera.matrixx.solve.impl.CholeskySolver

public class CholeskySolver
extends Object

Author:

Peter Abeles

Field Summary

Fields

Modifier and Type	Field and Description
protected Matrix	A
protected int	numCols
protected int	numRows

Constructor Summary

Constructors

Constructor and Description
CholeskySolver()

Method Summary

Modifier and Type	Method and Description
AMatrix	invert() Sets the matrix 'inv' equal to the inverse of the matrix that was decomposed.
double	quality()
boolean	setA(AMatrix _A)
void	setToInverseL(double[] a) Sets the matrix to the inverse using a lower triangular matrix.
AMatrix	solve(AMatrix B) Using the decomposition, finds the value of 'X' in the linear equation below: A*x = b where A has dimension of n by n, x and b are n by m dimension.

Methods inherited from class java.lang.Object

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

Field Detail

A

protected Matrix A

numRows

protected int numRows

numCols

protected int numCols

Constructor Detail

CholeskySolver

public CholeskySolver()

Method Detail

setA

public boolean setA(AMatrix _A)

quality

public double quality()

solve

public AMatrix solve(AMatrix B)

Using the decomposition, finds the value of 'X' in the linear equation below:
A*x = b
where A has dimension of n by n, x and b are n by m dimension.

*Note* that 'b' and 'x' can be the same matrix instance.

Parameters:

B - A matrix that is n by m. Not modified.

X - An n by m matrix where the solution is written to. Modified.

invert

public AMatrix invert()

Sets the matrix 'inv' equal to the inverse of the matrix that was decomposed.

Parameters:

inv - Where the value of the inverse will be stored. Modified.

setToInverseL

public void setToInverseL(double[] a)

Sets the matrix to the inverse using a lower triangular matrix.