Package org.ejml.dense.row.decomposition.eig

Class WatchedDoubleStepQRDecomposition_DDRM

java.lang.Object

org.ejml.dense.row.decomposition.eig.WatchedDoubleStepQRDecomposition_DDRM

All Implemented Interfaces:

org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.DMatrixRMaj>, org.ejml.interfaces.decomposition.EigenDecomposition<org.ejml.data.DMatrixRMaj>, org.ejml.interfaces.decomposition.EigenDecomposition_F64<org.ejml.data.DMatrixRMaj>

public class WatchedDoubleStepQRDecomposition_DDRM
extends java.lang.Object
implements org.ejml.interfaces.decomposition.EigenDecomposition_F64<org.ejml.data.DMatrixRMaj>

Finds the eigenvalue decomposition of an arbitrary square matrix using the implicit double-step QR algorithm. Watched is included in its name because it is designed to print out internal debugging information. This class is still underdevelopment and has yet to be optimized.

Based off the description found in:
David S. Watkins, "Fundamentals of Matrix Computations." Second Edition.

Constructor Summary

Constructors

Constructor	Description
WatchedDoubleStepQRDecomposition_DDRM(boolean computeVectors)
WatchedDoubleStepQRDecomposition_DDRM(HessenbergSimilarDecomposition_DDRM hessenberg, WatchedDoubleStepQREigen_DDRM eigenQR, boolean computeVectors)

Method Summary

Modifier and Type	Method	Description
boolean	decompose(org.ejml.data.DMatrixRMaj A)
org.ejml.data.Complex_F64	getEigenvalue(int index)
org.ejml.data.DMatrixRMaj	getEigenVector(int index)
int	getNumberOfEigenvalues()
boolean	inputModified()

Methods inherited from class java.lang.Object

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

Constructor Details

WatchedDoubleStepQRDecomposition_DDRM

public WatchedDoubleStepQRDecomposition_DDRM(boolean computeVectors)

WatchedDoubleStepQRDecomposition_DDRM

public WatchedDoubleStepQRDecomposition_DDRM(HessenbergSimilarDecomposition_DDRM hessenberg, WatchedDoubleStepQREigen_DDRM eigenQR, boolean computeVectors)

Method Details

decompose

public boolean decompose(org.ejml.data.DMatrixRMaj A)

Specified by:

decompose in interface org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.DMatrixRMaj>

inputModified

public boolean inputModified()

Specified by:

inputModified in interface org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.DMatrixRMaj>

getNumberOfEigenvalues

public int getNumberOfEigenvalues()

Specified by:

getNumberOfEigenvalues in interface org.ejml.interfaces.decomposition.EigenDecomposition<org.ejml.data.DMatrixRMaj>

getEigenvalue

public org.ejml.data.Complex_F64 getEigenvalue(int index)

Specified by:

getEigenvalue in interface org.ejml.interfaces.decomposition.EigenDecomposition_F64<org.ejml.data.DMatrixRMaj>

getEigenVector

public org.ejml.data.DMatrixRMaj getEigenVector(int index)

Specified by:

getEigenVector in interface org.ejml.interfaces.decomposition.EigenDecomposition<org.ejml.data.DMatrixRMaj>