no.uib.cipr.matrix

Class RQ

java.lang.Object

no.uib.cipr.matrix.RQ

public class RQ
extends Object

Computes RQ decompositions

Constructor Summary

Constructors

Constructor and Description
RQ(int m, int n) Constructs an empty RQ decomposition

Method Summary

Modifier and Type	Method and Description
RQ	factor(DenseMatrix A) Computes an orthogonal decomposition
static RQ	factorize(Matrix A) Convenience method to compute an RQ decomposition
DenseMatrix	getQ() Returns the orthogonal part of the factorization
UpperTriangDenseMatrix	getR() Returns the upper triangular factor

Methods inherited from class java.lang.Object

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

Constructor Detail

RQ

public RQ(int m,
          int n)

Constructs an empty RQ decomposition

Parameters:

m - Number of rows

n - Number of columns. Must be larger than or equal the number of rows

Method Detail

factorize

public static RQ factorize(Matrix A)

Convenience method to compute an RQ decomposition

Parameters:

A - Matrix to decompose. Not modified

Returns:

Newly allocated decomposition

factor

public RQ factor(DenseMatrix A)

Computes an orthogonal decomposition

Parameters:

A - Matrix to decompose. Overwritten on exit. Pass a copy to avoid this

Returns:

The current decomposition

getR

public UpperTriangDenseMatrix getR()

Returns the upper triangular factor

getQ

public DenseMatrix getQ()

Returns the orthogonal part of the factorization