jas.random
Class GammaDistribution

java.lang.Object
  cern.colt.PersistentObject
      cern.jet.random.AbstractDistribution
          cern.jet.random.AbstractContinousDistribution
              cern.jet.random.Gamma
                  jas.random.GammaDistribution

All Implemented Interfaces:

cern.colt.function.DoubleFunction, cern.colt.function.IntFunction, java.io.Serializable, java.lang.Cloneable

public class GammaDistribution
extends cern.jet.random.Gamma

Well known probability distribution. This class is a wrapper for the Gamma class of the COLT library. See cern.jet.random.Gamma API documentation for more details.

Title: JAS

Description: Java Agent-based Simulation library

Copyright (C) 2002 Michele Sonnessa

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

Author:

Michele Sonnessa

See Also:

Serialized Form

Constructor Summary

GammaDistribution(double alpha, double lambda)
Create a gamma random generator with given parameters and the default generator of JAS engine (Sim.getRnd() generator).

GammaDistribution(double alpha, double lambda, cern.jet.random.engine.RandomEngine randomGenerator)
Create a gamma random generator with given parameters and a given generator.

Method Summary

static double

staticNextDouble(double alpha, double lambda) Unsupported operation.

Methods inherited from class cern.jet.random.Gamma

cdf, nextDouble, nextDouble, pdf, setState, toString

Methods inherited from class cern.jet.random.AbstractDistribution

apply, apply, clone, makeDefaultGenerator, nextInt

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

GammaDistribution

public GammaDistribution(double alpha,
                         double lambda)

Create a gamma random generator with given parameters and the default generator of JAS engine (Sim.getRnd() generator).

Parameters:

alpha - Well known parameter of Gamma distribution.

lambda - Well known parameter of Gamma distribution.

GammaDistribution

public GammaDistribution(double alpha,
                         double lambda,
                         cern.jet.random.engine.RandomEngine randomGenerator)

Create a gamma random generator with given parameters and a given generator.

Parameters:

alpha - Well known parameter of Gamma distribution.

lambda - Well known parameter of Gamma distribution.

randomGenerator - A random number generator. It is taken from COLT library. See cern.jet.random.engine.RandomEngine for more details.

Method Detail

staticNextDouble

public static double staticNextDouble(double alpha,
                                      double lambda)

Unsupported operation.