org.jutil.math.matrix
Class SchurEigenvalueDecomposition

java.lang.Object
  |
  +--org.jutil.math.matrix.SchurEigenvalueDecomposition

All Implemented Interfaces:

EigenvalueDecomposition

public class SchurEigenvalueDecomposition

extends java.lang.Object

implements EigenvalueDecomposition

A class of eigenvalue decomposers using an explict shift algorithm.

Version:

$Revision: 1.3 $

Author:

Marko van Dooren

Field Summary

static java.lang.String

CVS_REVISION

Constructor Summary

SchurEigenvalueDecomposition(SchurDecomposition decomposition, LinSolver linSolver)
public behavior

pre decomposition != null;
pre linSolver != null;

post getLinSolver() == linSolver;
Initialize a new SchurEigenvalueDecomposition with the given decomposition and LinSolver.

Method Summary

double	getEigenvalue(int index) See superclass
Column	getEigenvalues() See superclass
Column	getEigenvector(int index) See superclass
Matrix	getEigenvectors() See superclass
LinSolver	getLinSolver() Return the LinSolver used to compute the eigenvectors.
int	getNbEigenvalues() See superclass
Matrix	lambda() See superclass

Methods inherited from class java.lang.Object

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

Field Detail

CVS_REVISION

public static final java.lang.String CVS_REVISION

Constructor Detail

SchurEigenvalueDecomposition

public SchurEigenvalueDecomposition(SchurDecomposition decomposition,
                                    LinSolver linSolver)

public behavior

pre decomposition != null;
pre linSolver != null;

post getLinSolver() == linSolver;
Initialize a new SchurEigenvalueDecomposition with the given decomposition and LinSolver.

Parameters:

decomposition - The schur decomposition of the matrix.

linSolver - The LinSolver to be used for calculating the eigenvectors.

Method Detail

lambda

public Matrix lambda()

See superclass

Specified by:

lambda in interface EigenvalueDecomposition

getNbEigenvalues

public int getNbEigenvalues()

See superclass

Specified by:

getNbEigenvalues in interface EigenvalueDecomposition

getEigenvectors

public Matrix getEigenvectors()

See superclass

Specified by:

getEigenvectors in interface EigenvalueDecomposition

getEigenvalues

public Column getEigenvalues()

See superclass

Specified by:

getEigenvalues in interface EigenvalueDecomposition

getEigenvector

public Column getEigenvector(int index)

See superclass

Specified by:

getEigenvector in interface EigenvalueDecomposition

Following copied from interface: org.jutil.math.matrix.EigenvalueDecomposition

Parameters:

index - The index of the requested eigenvector.

getEigenvalue

public double getEigenvalue(int index)

See superclass

Specified by:

getEigenvalue in interface EigenvalueDecomposition

Following copied from interface: org.jutil.math.matrix.EigenvalueDecomposition

Parameters:

index - The index of the requested eigenvalue.

getLinSolver

public LinSolver getLinSolver()

Return the LinSolver used to compute the eigenvectors.