stream.generator

Class Gaussian

java.lang.Object

stream.generator.Gaussian

All Implemented Interfaces:

DistributionFunction

public class Gaussian
extends Object
implements DistributionFunction

This class implements a gaussian distributor.

Author:

Christian Bockermann <chris@jwall.org>

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Double	mean
(package private) Random	rnd
(package private) Long	seed
(package private) Double	variance

Constructor Summary

Constructors

Constructor and Description
Gaussian()
Gaussian(Double mean, Double variance)
Gaussian(Double mean, Double variance, Long seed)
Gaussian(Long seed)

Method Summary

Modifier and Type	Method and Description
Double	getMean()
Long	getSeed()
Double	getVariance()
Double	next()
Double	nextGaussian()
Double	p(Double x)
static double	phi(double x)
static double	Phi(double z)
static double	phi(double x, double mu, double sigma)
static double	Phi(double z, double mu, double sigma)
void	setMean(Double mean)
void	setSeed(Long seed)
void	setVariance(Double variance)
String	toHtml()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

rnd

Random rnd

seed

Long seed

mean

Double mean

variance

Double variance

Constructor Detail

Gaussian

public Gaussian()

Gaussian

public Gaussian(Long seed)

Gaussian

public Gaussian(Double mean,
                Double variance,
                Long seed)

Gaussian

public Gaussian(Double mean,
                Double variance)

Method Detail

getSeed

public Long getSeed()

Returns:

the seed

setSeed

public void setSeed(Long seed)

Parameters:

seed - the seed to set

getMean

public Double getMean()

Returns:

the mean

setMean

public void setMean(Double mean)

Parameters:

mean - the mean to set

getVariance

public Double getVariance()

Returns:

the variance

setVariance

public void setVariance(Double variance)

Parameters:

variance - the variance to set

next

public Double next()

nextGaussian

public Double nextGaussian()

toHtml

public String toHtml()

toString

public String toString()

Overrides:

toString in class Object

p

public Double p(Double x)

Specified by:

p in interface DistributionFunction

See Also:

DistributionFunction.p(java.lang.Double)

phi

public static double phi(double x)

phi

public static double phi(double x,
                         double mu,
                         double sigma)

Phi

public static double Phi(double z)

Phi

public static double Phi(double z,
                         double mu,
                         double sigma)