/*
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 org.geogebra.common.kernel.statistics;
import org.apache.commons.math3.distribution.TDistribution;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.commands.Commands;
import org.geogebra.common.kernel.geos.GeoNumberValue;
/**
*
* @author Michael Borcherds
*/
public class AlgoTDistribution extends AlgoDistribution {
/**
* @param cons
* construction
* @param label
* lavel
* @param a
* degrees of freadom
* @param b
* variable value
*/
public AlgoTDistribution(Construction cons, String label, GeoNumberValue a,
GeoNumberValue b) {
super(cons, label, a, b, null, null);
}
public AlgoTDistribution(Construction cons, GeoNumberValue a,
GeoNumberValue b) {
super(cons, a, b, null, null);
}
@Override
public Commands getClassName() {
return Commands.TDistribution;
}
@Override
public final void compute() {
if (input[0].isDefined() && input[1].isDefined()) {
double param = a.getDouble();
double val = b.getDouble();
try {
TDistribution t = getTDistribution(param);
num.setValue(t.cumulativeProbability(val)); // P(T <= val)
} catch (Exception e) {
num.setUndefined();
}
} else {
num.setUndefined();
}
}
}