Package sim.util.distribution
Class VonMises
java.lang.Object
sim.util.distribution.AbstractDistribution
sim.util.distribution.AbstractContinuousDistribution
sim.util.distribution.VonMises
- All Implemented Interfaces:
Serializable
Von Mises distribution.
Static methods operate on a default uniform random number generator; they are synchronized.
Method: Acceptance Rejection.
This is a port of mwc.c from the C-RAND / WIN-RAND library.
C-RAND's implementation, in turn, is based upon
Valid parameter ranges: k > 0.
Instance methods operate on a user supplied uniform random number generator; they are unsynchronized.
Implementation:
D.J. Best, N.I. Fisher (1979): Efficient simulation of the von Mises distribution, Appl. Statist. 28, 152-157.
- See Also:
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Field Summary
Fields inherited from class sim.util.distribution.AbstractDistribution
randomGenerator
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Constructor Summary
ConstructorDescriptionVonMises
(double freedom, MersenneTwisterFast randomGenerator) Constructs a Von Mises distribution. -
Method Summary
Modifier and TypeMethodDescriptiondouble
Returns a random number from the distribution.double
nextDouble
(double k) Returns a random number from the distribution; bypasses the internal state.void
setState
(double k) Sets the distribution parameter.toString()
Returns a String representation of the receiver.Methods inherited from class sim.util.distribution.AbstractDistribution
apply, apply, getRandomGenerator, nextInt, setRandomGenerator
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Field Details
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my_k
protected double my_k
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Constructor Details
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VonMises
Constructs a Von Mises distribution. Example: k=1.0.- Throws:
IllegalArgumentException
- if k <= 0.0.
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Method Details
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nextDouble
public double nextDouble()Returns a random number from the distribution.- Specified by:
nextDouble
in classAbstractDistribution
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nextDouble
public double nextDouble(double k) Returns a random number from the distribution; bypasses the internal state.- Throws:
IllegalArgumentException
- if k <= 0.0.
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setState
public void setState(double k) Sets the distribution parameter.- Throws:
IllegalArgumentException
- if k <= 0.0.
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toString
Returns a String representation of the receiver.
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