geogebra.common.kernel.statistics.AlgoInverseWeibull.java Source code

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Here is the source code for geogebra.common.kernel.statistics.AlgoInverseWeibull.java

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/* 
GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org
    
This file is part of GeoGebra.
    
This program is free software; you can redistribute it and/or modify it 
under the terms of the GNU General Public License as published by 
the Free Software Foundation.
    
 */

package geogebra.common.kernel.statistics;

import geogebra.common.kernel.Construction;
import geogebra.common.kernel.arithmetic.NumberValue;
import geogebra.common.kernel.commands.Commands;

import org.apache.commons.math.distribution.WeibullDistribution;

/**
 * 
 * @author Michael Borcherds
 */

public class AlgoInverseWeibull extends AlgoDistribution {

    /**
     * @param cons
     *            construction
     * @param label
     *            label for output
     * @param a
     *            shape
     * @param b
     *            scale
     * @param c
     *            variable value
     */
    public AlgoInverseWeibull(Construction cons, String label, NumberValue a, NumberValue b, NumberValue c) {
        super(cons, label, a, b, c, null);
    }

    /**
     * @param cons
     *            construction
     * @param a
     *            shape
     * @param b
     *            scale
     * @param c
     *            variable value
     */
    public AlgoInverseWeibull(Construction cons, NumberValue a, NumberValue b, NumberValue c) {
        super(cons, a, b, c, null);
    }

    @Override
    public Commands getClassName() {
        return Commands.InverseWeibull;
    }

    @Override
    public final void compute() {

        if (input[0].isDefined() && input[1].isDefined() && input[2].isDefined()) {
            double param = a.getDouble();
            double param2 = b.getDouble();
            double val = c.getDouble();
            try {
                WeibullDistribution dist = getWeibullDistribution(param, param2);
                num.setValue(dist.inverseCumulativeProbability(val));

            } catch (Exception e) {
                num.setUndefined();
            }
        } else
            num.setUndefined();
    }

}