Package jasima.core.random.continuous

Class DblTriangular

java.lang.Object

jasima.core.random.continuous.DblSequence

jasima.core.random.continuous.DblTriangular

All Implemented Interfaces:

Serializable, Cloneable

public class DblTriangular
extends DblSequence

Returns a random real number following a triangular distribution as defined by the three parameters min, mode, and max.

Author:

Torsten Hildebrandt

See Also:

Triangular distribution (Wikipedia), Triangular distribution (MathWorld), Serialized Form

Field Summary

Fields inherited from class jasima.core.random.continuous.DblSequence

rndGen

Constructor Summary

Constructors

Constructor	Description
DblTriangular(double min, double mode, double max)

Method Summary

Modifier and Type	Method	Description
static DblTriangular	fromMinMeanMax(double min, double mean, double max)	Factory method to create a DblStream given the distribution's mean value.
static DblTriangular	fromMinModeMax(double min, double mode, double max)	Factory method to create a DblStream given the distribution's mode value.
double	getMax()
double	getMin()
double	getMode()
double	getNumericalMean()	Returns the arithmetic mean of the values returned by DblSequence.nextDbl().
Pair<Double,Double>	getValueRange()	This method computes the minimum and maximum support values (range of possible values) of this stream.
void	init()	Initializes this stream.
double	nextDbl()	Returns the next number in this number stream.
void	setMax(double max)
void	setMin(double min)
void	setMode(double mode)
String	toString()

Methods inherited from class jasima.core.random.continuous.DblSequence

clone, createStreamDefFromStream, getName, getRndGen, max, min, setName, setRndGen

Methods inherited from class java.lang.Object

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

Constructor Detail

DblTriangular

public DblTriangular(double min,
                     double mode,
                     double max)

Method Detail

fromMinModeMax

public static DblTriangular fromMinModeMax(double min,
                                           double mode,
                                           double max)

Factory method to create a DblStream given the distribution's mode value.

Parameters:

min - The distribution's minimum value.

mode - The distribution's mode (most frequent) value.

max - The distribution's maximum value.

Returns:

A new DblTriangular object.

fromMinMeanMax

public static DblTriangular fromMinMeanMax(double min,
                                           double mean,
                                           double max)

Factory method to create a DblStream given the distribution's mean value.

Parameters:

min - The distribution's minimum value.

mean - The distribution's mean value.

max - The distribution's maximum value.

Returns:

A new DblTriangular object.

init

public void init()

Description copied from class: DblSequence

Initializes this stream. This method is supposed to be called once before repeated calls to DblSequence.nextDbl() can be made.

Overrides:

init in class DblSequence

nextDbl

public double nextDbl()

Description copied from class: DblSequence

Returns the next number in this number stream.

Specified by:

nextDbl in class DblSequence

getNumericalMean

public double getNumericalMean()

Description copied from class: DblSequence

Returns the arithmetic mean of the values returned by DblSequence.nextDbl().

Overrides:

getNumericalMean in class DblSequence

toString

public String toString()

Overrides:

toString in class Object

getValueRange

public Pair<Double,Double> getValueRange()

Description copied from class: DblSequence

This method computes the minimum and maximum support values (range of possible values) of this stream.

Overrides:

getValueRange in class DblSequence

Returns:

A Pair containing the minimum and maximum support values.

getMin

public double getMin()

setMin

public void setMin(double min)

getMode

public double getMode()

setMode

public void setMode(double mode)

getMax

public double getMax()

setMax

public void setMax(double max)