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

Introduction

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

Source

/* 
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 geogebra.common.kernel.geos.GeoBoolean;
import geogebra.common.main.App;

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

/**
 * 
 * @author G. Sturr
 */

public class AlgoPoisson extends AlgoDistribution {

    public AlgoPoisson(Construction cons, String label, NumberValue a, NumberValue b, GeoBoolean isCumulative) {
        super(cons, label, a, b, null, isCumulative);
    }

    public AlgoPoisson(Construction cons, NumberValue a, NumberValue b, GeoBoolean isCumulative) {
        super(cons, a, b, null, isCumulative);
    }

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

    @Override
    @SuppressWarnings("deprecation")
    public final void compute() {

        if (input[0].isDefined() && input[1].isDefined() && input[2].isDefined()) {
            double param = a.getDouble();
            double val = b.getDouble();
            try {
                PoissonDistribution dist = getPoissonDistribution(param);
                if (isCumulative.getBoolean())
                    num.setValue(dist.cumulativeProbability(val)); // P(X <=
                // val)
                else
                    num.setValue(dist.probability(val)); // P(X = val)
            } catch (Exception e) {
                App.debug(e.getMessage());
                num.setUndefined();
            }
        } else
            num.setUndefined();
    }

}