Utility
Class Triangular

java.lang.Object
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  +--Utility.RandomNumber
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        +--Utility.Triangular

public class Triangular

extends RandomNumber

Triangular is used to generate random variables from the triangular distribution.

This is a continuous distribution.

Tests Performed
1000 samples were generated and the means and variances were examined. Subjectively, they seemed correct. A goodness of fit test was performed with 100 samples and 10 intervals. It succeeded about 19/20 times.

Constructor Summary

Triangular(double left, double center, double right)
Triangular constructor.

Method Summary

double	sampleDouble() Generate a random double from the triangular distribution.
int	sampleInt() The sampleInt function should not be called for this continuous distribution.

Methods inherited from class Utility.RandomNumber

goodnessOfFitTest, goodnessOfFitTest, randomMixer, resetRandomMixer, sample01

Methods inherited from class java.lang.Object

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

Constructor Detail

Triangular

public Triangular(double left,
                  double center,
                  double right)

Triangular constructor. The left, right and center points along the x-axis characterize the triangular distribution.

Parameters:

left - The leftmost endpoint

center - The center point of the triangle (x-axis pos not height.

right - The rightmost endpoint

Method Detail

sampleDouble

public double sampleDouble()

Generate a random double from the triangular distribution.

Overrides:

sampleDouble in class RandomNumber

Returns:

A double from the triangular distribution. The output is gauranteed to be between the left and right endpoints.

See Also:

Triangular(double, double, double)

sampleInt

public int sampleInt()

The sampleInt function should not be called for this continuous distribution.

Overrides:

sampleInt in class RandomNumber