nl.tudelft.simulation.jstats.distributions
Class DistPoisson

java.lang.Object
  nl.tudelft.simulation.jstats.distributions.Dist
      nl.tudelft.simulation.jstats.distributions.DistDiscrete
          nl.tudelft.simulation.jstats.distributions.DistPoisson

All Implemented Interfaces:

java.io.Serializable

public class DistPoisson

extends DistDiscrete

The Poisson distribution. For more information on this distribution see http://mathworld.wolfram.com/PoissonDistribution.html

(c) copyright 2002-2004 Delft University of Technology , the Netherlands.
See for project information www.simulation.tudelft.nl
License of use: General Public License (GPL) , no warranty

Since:

1.2

Version:

1.8 2004-03-22

Author:

Alexander Verbraeck
Peter Jacobs

See Also:

Serialized Form

Field Summary

Fields inherited from class nl.tudelft.simulation.jstats.distributions.Dist

stream

Constructor Summary

DistPoisson(StreamInterface stream, double lambda)
constructs a new poisson distribution

Method Summary

long	draw() draws the next long from the stream.
double	probability(int observation) returns the propbability of the observation in this particular distribution.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DistPoisson

public DistPoisson(StreamInterface stream,
                   double lambda)

constructs a new poisson distribution

Parameters:

stream - the numberstream

lambda - the lambda parameter

Method Detail

draw

public long draw()

Description copied from class: DistDiscrete

draws the next long from the stream.

Specified by:

draw in class DistDiscrete

Returns:

long

See Also:

DistDiscrete.draw()

probability

public double probability(int observation)

Description copied from class: DistDiscrete

returns the propbability of the observation in this particular distribution.

Specified by:

probability in class DistDiscrete

Parameters:

observation - the discrete observation.

Returns:

double the probability.

See Also:

#probability(int)

toString

public java.lang.String toString()

See Also:

Object.toString()