Example usage for org.apache.commons.math3.linear RealMatrix setRowMatrix

Introduction

In this page you can find the example usage for org.apache.commons.math3.linear RealMatrix setRowMatrix.

Prototype

void setRowMatrix(int row, RealMatrix matrix) throws OutOfRangeException, MatrixDimensionMismatchException;

Source Link

Document

Sets the specified row of this matrix to the entries of the specified row matrix .

Usage

From source file:com.yahoo.egads.utilities.SpectralMethods.java

public static RealMatrix createHankelMatrix(RealMatrix data, int windowSize) {

    int n = data.getRowDimension();
    int m = data.getColumnDimension();
    int k = n - windowSize + 1;

    RealMatrix res = MatrixUtils.createRealMatrix(k, m * windowSize);
    double[] buffer = {};

    for (int i = 0; i < n; ++i) {
        double[] row = data.getRow(i);
        buffer = ArrayUtils.addAll(buffer, row);

        if (i >= windowSize - 1) {
            RealMatrix mat = MatrixUtils.createRowRealMatrix(buffer);
            res.setRowMatrix(i - windowSize + 1, mat);
            buffer = ArrayUtils.subarray(buffer, m, buffer.length);
        }/*from w w w .j a v a  2s.com*/
    }

    return res;
}

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From source file:lirmm.inria.fr.math.BigSparseRealMatrixTest.java

@Test
public void testSetRowMatrix() {
    RealMatrix m = new BigSparseRealMatrix(subTestData);
    RealMatrix mRow3 = new BigSparseRealMatrix(subRow3);
    Assert.assertNotSame(mRow3, m.getRowMatrix(0));
    m.setRowMatrix(0, mRow3);
    Assert.assertEquals(mRow3, m.getRowMatrix(0));
    try {//from w  w w.  j  a  v  a  2 s  . c  o m
        m.setRowMatrix(-1, mRow3);
        Assert.fail("Expecting OutOfRangeException");
    } catch (OutOfRangeException ex) {
        // expected
    }
    try {
        m.setRowMatrix(0, m);
        Assert.fail("Expecting MatrixDimensionMismatchException");
    } catch (MatrixDimensionMismatchException ex) {
        // expected
    }
}

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