jhplot.math.num.random
Class NormalRandomVariable
- java.lang.Object
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- jhplot.math.num.random.AbstractContinuousRandomVariable
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- jhplot.math.num.random.NormalRandomVariable
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- All Implemented Interfaces:
- ContinuousRandomVariable
public class NormalRandomVariable extends AbstractContinuousRandomVariable
A random variable generator for the Normal distribution.
References:
- Wikipedia contributors, "Normal distribution," Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/wiki/Normal_distribution
- Since:
- 1.3
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Constructor Summary
Constructors Constructor and Description NormalRandomVariable()
Default constructor.NormalRandomVariable(double m, double s)
Create a random variable with the given mean and standard deviation.NormalRandomVariable(double m, double s, RNG source)
Create a random variable with the given parameters.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method and Description double
nextRandomVariable()
Access the next random variable from this generator.static double
nextRandomVariable(double m, double s, RNG source)
Access the next random variable using the given generator.
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Constructor Detail
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NormalRandomVariable
public NormalRandomVariable()
Default constructor. Mean is set to zero and standard deviation is set to one.
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NormalRandomVariable
public NormalRandomVariable(double m, double s)
Create a random variable with the given mean and standard deviation.- Parameters:
m
- the mean.s
- the standard deviation.
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NormalRandomVariable
public NormalRandomVariable(double m, double s, RNG source)
Create a random variable with the given parameters.- Parameters:
m
- the mean.s
- the standard deviation.source
- the source generator.
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Method Detail
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nextRandomVariable
public static double nextRandomVariable(double m, double s, RNG source)
Access the next random variable using the given generator.
The implementation of this method is based on the Normal generator of Marsaglia and Bray.
- Parameters:
m
- the mean.s
- the standard deviation.source
- the source generator.- Returns:
- the next random variable.
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nextRandomVariable
public double nextRandomVariable()
Access the next random variable from this generator.- Returns:
- the next random variable.
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