Example usage for org.apache.commons.math3.exception MathUnsupportedOperationException MathUnsupportedOperationException

Introduction

In this page you can find the example usage for org.apache.commons.math3.exception MathUnsupportedOperationException MathUnsupportedOperationException.

Prototype

public MathUnsupportedOperationException() 

Source Link

Document

Default constructor.

Usage

From source file:org.pmad.gmm.MyEDC.java

/**
 * Computes the square-root of the matrix.
 * This implementation assumes that the matrix is symmetric and positive
 * definite./* w w  w  .  j av a 2s . c om*/
 *
 * @return the square-root of the matrix.
 * @throws MathUnsupportedOperationException if the matrix is not
 * symmetric or not positive definite.
 * @since 3.1
 */
public RealMatrix getSquareRoot() {
    if (!isSymmetric) {
        throw new MathUnsupportedOperationException();
    }

    final double[] sqrtEigenValues = new double[realEigenvalues.length];
    for (int i = 0; i < realEigenvalues.length; i++) {
        final double eigen = realEigenvalues[i];
        if (eigen <= 0) {
            throw new MathUnsupportedOperationException();
        }
        sqrtEigenValues[i] = FastMath.sqrt(eigen);
    }
    final RealMatrix sqrtEigen = MatrixUtils.createRealDiagonalMatrix(sqrtEigenValues);
    final RealMatrix v = getV();
    final RealMatrix vT = getVT();

    return v.multiply(sqrtEigen).multiply(vT);
}

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From source file:org.pmad.gmm.MyEDC.java

/**
 * Gets a solver for finding the A × X = B solution in exact
 * linear sense.//ww  w. j av  a  2s.c om
 * <p>
 * Since 3.1, eigen decomposition of a general matrix is supported,
 * but the {@link DecompositionSolver} only supports real eigenvalues.
 *
 * @return a solver
 * @throws MathUnsupportedOperationException if the decomposition resulted in
 * complex eigenvalues
 */
public DecompositionSolver getSolver() {
    if (hasComplexEigenvalues()) {
        throw new MathUnsupportedOperationException();
    }
    return new Solver(realEigenvalues, imagEigenvalues, eigenvectors);
}

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