Package org.ejml.dense.row.linsol.qr

Class SolveNullSpaceQR_DDRM

java.lang.Object

org.ejml.dense.row.linsol.qr.SolveNullSpaceQR_DDRM

All Implemented Interfaces:

SolveNullSpace<DMatrixRMaj>

public class SolveNullSpaceQR_DDRM
extends Object
implements SolveNullSpace<DMatrixRMaj>

Uses QR decomposition to find the null-space for a matrix of any shape if the number of singular values is known. WARNING: This only uses the first several rows in the input matrix. The rest are ignored.

Solves for A^T=QR and the last column in Q is the null space.

Constructor Summary

Constructors

Constructor	Description
SolveNullSpaceQR_DDRM()

Method Summary

Modifier and Type	Method	Description
DMatrixRMaj	getQ()
boolean	inputModified()	Returns true if the input matrix is modified
boolean	process(DMatrixRMaj A, int numSingularValues, DMatrixRMaj nullspace)	Finds the null space of A

Methods inherited from class java.lang.Object

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

Constructor Details

SolveNullSpaceQR_DDRM

public SolveNullSpaceQR_DDRM()

Method Details

process

public boolean process(DMatrixRMaj A,
 int numSingularValues,
 DMatrixRMaj nullspace)

Finds the null space of A

Specified by:

process in interface SolveNullSpace<DMatrixRMaj>

Parameters:

A - (Input) Matrix. Modified

numSingularValues - Number of singular values

nullspace - Storage for null-space

Returns:

true if successful or false if it failed

inputModified

public boolean inputModified()

Description copied from interface: SolveNullSpace

Returns true if the input matrix is modified

Specified by:

inputModified in interface SolveNullSpace<DMatrixRMaj>

getQ

public DMatrixRMaj getQ()