Package no.uib.cipr.matrix
Class QR
- java.lang.Object
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- no.uib.cipr.matrix.QR
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public class QR extends java.lang.Object
Computers QR decompositions
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Constructor Summary
Constructors Constructor Description QR(int m, int n)
Constructs an empty QR decomposition
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description QR
factor(DenseMatrix A)
Computes an orthogonal decompositionstatic QR
factorize(Matrix A)
Convenience method to compute a QR decompositionDenseMatrix
getQ()
Returns the orthogonal part of the factorizationUpperTriangDenseMatrix
getR()
Returns the upper triangular factor
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Method Detail
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factorize
public static QR factorize(Matrix A)
Convenience method to compute a QR decomposition- Parameters:
A
- Matrix to decompose. Not modified- Returns:
- Newly allocated decomposition
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factor
public QR 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
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getR
public UpperTriangDenseMatrix getR()
Returns the upper triangular factor
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getQ
public DenseMatrix getQ()
Returns the orthogonal part of the factorization
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