Examples of org.apache.commons.math3.analysis.UnivariateFunction

Package org.apache.commons.math3.analysis

Examples of org.apache.commons.math3.analysis.UnivariateFunction

org.apache.commons.math3.analysis.UnivariateFunction
x value that caused the problem. private final double x; public LocalException(double x) { this.x = x; } public double getX() { return x; } } private static class MyFunction implements UnivariateFunction { public double value(double x) { double y = hugeFormula(x); if (somethingBadHappens) { throw new LocalException(x); } return y; } } public void compute() { try { solver.solve(maxEval, new MyFunction(a, b, c), min, max); } catch (LocalException le) { // Retrieve the x value. } } As shown, the exception is local to the user's code and it is guaranteed that Apache Commons Math will not catch it.

    /**
     * Test of transformer for the sine function.
     */
    @Test
    public void testSinFunction() {
        UnivariateFunction f = new Sin();
        FastFourierTransformer transformer;
        transformer = new FastFourierTransformer(DftNormalization.STANDARD);
        Complex result[]; int N = 1 << 8;
        double min, max, tolerance = 1E-12;

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    /**
     * Test of transformer for the sine function.
     */
    @Test
    public void testSinFunction() {
        UnivariateFunction f = new Sin();
        FastSineTransformer transformer;
        transformer = new FastSineTransformer(DstNormalization.STANDARD_DST_I);
        double min, max, result[], tolerance = 1E-12; int N = 1 << 8;


        min = 0.0; max = 2.0 * FastMath.PI;

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    /**
     * Test of parameters for the transformer.
     */
    @Test
    public void testParameters() throws Exception {
        UnivariateFunction f = new Sin();
        FastSineTransformer transformer;
        transformer = new FastSineTransformer(DstNormalization.STANDARD_DST_I);


        try {
            // bad interval

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    /** Test of parameters for the transformer. */
    @Test
    public void testParameters()
        throws Exception {
        UnivariateFunction f = new Sin();
        FastCosineTransformer transformer;
        transformer = new FastCosineTransformer(DctNormalization.STANDARD_DCT_I);


        try {
            // bad interval

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    }


    /** Test of transformer for the sine function. */
    @Test
    public void testSinFunction() {
        UnivariateFunction f = new Sin();
        FastCosineTransformer transformer;
        transformer = new FastCosineTransformer(DctNormalization.STANDARD_DCT_I);
        double min, max, result[], tolerance = 1E-12;
        int N = 9;

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     */
    @Test
    public void testTransformFunctionInvalidDataSize() {
        final TransformType[] type = TransformType.values();
        final RealTransformer transformer = createRealTransformer();
        final UnivariateFunction f = getValidFunction();
        final double a = getValidLowerBound();
        final double b = getValidUpperBound();
        for (int i = 0; i < getNumberOfInvalidDataSizes(); i++) {
            final int n = getInvalidDataSize(i);
            for (int j = 0; j < type.length; j++) {

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     */
    @Test
    public void testTransformFunctionNotStrictlyPositiveNumberOfSamples() {
        final TransformType[] type = TransformType.values();
        final RealTransformer transformer = createRealTransformer();
        final UnivariateFunction f = getValidFunction();
        final double a = getValidLowerBound();
        final double b = getValidUpperBound();
        for (int i = 0; i < getNumberOfValidDataSizes(); i++) {
            final int n = getValidDataSize(i);
            for (int j = 0; j < type.length; j++) {

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     */
    @Test
    public void testTransformFunctionInvalidBounds() {
        final TransformType[] type = TransformType.values();
        final RealTransformer transformer = createRealTransformer();
        final UnivariateFunction f = getValidFunction();
        final double a = getValidLowerBound();
        final double b = getValidUpperBound();
        for (int i = 0; i < getNumberOfValidDataSizes(); i++) {
            final int n = getValidDataSize(i);
            for (int j = 0; j < type.length; j++) {

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    }


    private void doTestTransformFunction(final int n, final double tol,
        final TransformType type) {
        final RealTransformer transformer = createRealTransformer();
        final UnivariateFunction f = getValidFunction();
        final double a = getValidLowerBound();
        final double b = getValidUpperBound();
        final double[] x = createRealData(n);
        for (int i = 0; i < n; i++) {
            final double t = a + i * (b - a) / n;
            x[i] = f.value(t);
        }
        final double[] expected = transform(x, type);
        final double[] actual = transformer.transform(f, a, b, n, type);
        for (int i = 0; i < n; i++) {
            final String msg = String.format("%d, %d", n, i);

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    @Test
    public void testDensityIntegrals() {
        final double tol = 1.0e-9;
        final BaseAbstractUnivariateIntegrator integrator =
            new IterativeLegendreGaussIntegrator(5, 1.0e-12, 1.0e-10);
        final UnivariateFunction d = new UnivariateFunction() {
            public double value(double x) {
                return distribution.density(x);
            }
        };
        final ArrayList<Double> integrationTestPoints = new ArrayList<Double>();

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Related Classes of org.apache.commons.math3.analysis.UnivariateFunction

org.apache.commons.math3.analysis.differentiation.FiniteDifferencesDifferentiatorTest

org.apache.commons.math3.analysis.function.GaussianTest

org.apache.commons.math3.analysis.function.HarmonicOscillatorTest

org.apache.commons.math3.analysis.function.LogisticTest

org.apache.commons.math3.analysis.function.LogitTest

org.apache.commons.math3.analysis.function.SigmoidTest

org.apache.commons.math3.analysis.function.Sin

org.apache.commons.math3.analysis.function.Sinc

org.apache.commons.math3.analysis.function.SincTest

org.apache.commons.math3.analysis.function.SqrtTest

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