Example usage for org.apache.commons.math.distribution IntegerDistribution probability

Introduction

In this page you can find the example usage for org.apache.commons.math.distribution IntegerDistribution probability.

Prototype

double probability(int x);

Source Link

Document

For a random variable X whose values are distributed according to this distribution, this method returns P(X = x).

Usage

From source file:geogebra.common.kernel.algos.AlgoBarChart.java

/**
 * Utility method, creates and loads list1 and list2 with classes and
 * probabilities for the probability distribution bar charts
 *///from   w w  w .  j  a va  2 s  .co m
private void loadDistributionLists(int first, int last, IntegerDistribution dist) throws Exception {
    boolean oldSuppress = cons.isSuppressLabelsActive();
    cons.setSuppressLabelCreation(true);
    if (list1 != null)
        list1.remove();
    list1 = new GeoList(cons);

    if (list2 != null)
        list2.remove();
    list2 = new GeoList(cons);

    double prob;
    double cumProb = 0;

    for (int i = first; i <= last; i++) {
        list1.add(new GeoNumeric(cons, i));
        prob = dist.probability(i);
        cumProb += prob;
        if (isCumulative != null && ((GeoBoolean) isCumulative).getBoolean())
            list2.add(new GeoNumeric(cons, cumProb));
        else
            list2.add(new GeoNumeric(cons, prob));
    }
    cons.setSuppressLabelCreation(oldSuppress);
}

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From source file:geogebra.kernel.AlgoFunctionAreaSums.java

/**
 * Utility method, creates and loads list1 and list2 with classes and probabilities for
 * the probability distribution bar charts
 *///  w ww .j  a  va  2  s  .  c  om
private void loadDistributionLists(int first, int last, IntegerDistribution dist) throws Exception {
    boolean oldSuppress = cons.isSuppressLabelsActive();
    cons.setSuppressLabelCreation(true);
    if (list1 != null)
        list1.remove();
    list1 = new GeoList(cons);

    if (list2 != null)
        list2.remove();
    list2 = new GeoList(cons);

    double prob;
    double cumProb = 0;

    for (int i = first; i <= last; i++) {
        list1.add(new GeoNumeric(cons, i));
        prob = dist.probability(i);
        cumProb += prob;
        if (isCumulative != null && ((GeoBoolean) isCumulative).getBoolean())
            list2.add(new GeoNumeric(cons, cumProb));
        else
            list2.add(new GeoNumeric(cons, prob));
    }
    cons.setSuppressLabelCreation(oldSuppress);

}

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From source file:org.renjin.Distributions.java

/**
 * Calculates the value of the probability mass function at {@code x}
 * for the given discrete distribution//from w  w w  . j a v  a  2s . c o m
 *
 * @param dist the discrete distribution
 * @param x the value
 * @param log whether to return the natural logarithm of the probability
 * @return  the (natural logarithm) of the probability for the  random variable
 *  to take the value {@code x}
 */
private static double d(IntegerDistribution dist, double x, boolean log) {
    double d = dist.probability(x);
    if (log) {
        d = Math.log(d);
    }
    return d;
}

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