Example usage for org.apache.commons.math.linear QRDecomposition getSolver

Introduction

In this page you can find the example usage for org.apache.commons.math.linear QRDecomposition getSolver.

Prototype

DecompositionSolver getSolver();

Source Link

Document

Get a solver for finding the A × X = B solution in least square sense.

Usage

From source file:com.opengamma.analytics.math.linearalgebra.QRDecompositionCommonsResult.java

/**
 * @param qr The result of the QR decomposition, not null
 *//*  www  .j ava 2  s  .c  o  m*/
public QRDecompositionCommonsResult(final QRDecomposition qr) {
    Validate.notNull(qr);
    _h = CommonsMathWrapper.unwrap(qr.getH());
    _q = CommonsMathWrapper.unwrap(qr.getQ());
    _r = CommonsMathWrapper.unwrap(qr.getR());
    _qTranspose = DoubleMatrixUtils.getTranspose(_q);
    _solver = qr.getSolver();
}

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From source file:playground.mmoyo.taste_variations.MyLeastSquareSolutionCalculator.java

private double[] getQRDsolution(final RealMatrix matrixA, final double[] arrayB) {
    QRDecomposition qrd = new QRDecompositionImpl(matrixA);
    DecompositionSolver qrSolver = qrd.getSolver();
    double[] arrayX = qrSolver.solve(arrayB);
    return arrayX;
}

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