MATLAB®

RandStream (RandStream) - Random number stream

Class

@RandStream

Syntax

s = RandStream('gentype')
[...]=RandStream('gentype','param1',val1,'param2',val2,...)

Description

s = RandStream('gentype') creates a random number stream that uses the uniform pseudorandom number generator algorithm specified by gentype.[...]=RandStream('gentype','param1',val1,'param2',val2,...) allows you to specify optional parameter name/value pairs to control creation of the stream. Options for gentype are given by RandStream.list.

Parameters are for RandStream are:

Parameter	Description
Seed	Nonnegative scalar integer with which to initialize all streams. Default is 0. Seeds must be an integer between 0 and .
RandnAlg	Algorithm used by randn(s, ...) to generate normal pseudorandom values. Possible values are 'Ziggurat', 'Polar', or 'Inversion'.

Examples

Construct a random stream object using the combined multiple recursive generator and generate 5 uniformly distributed values from that stream.

stream=RandStream('mrg32k3a');
rand(stream,1,5)

Construct a random stream object using the multiplicative lagged Fibonacci generator and generate 5 normally distributed values using the polar algorithm.

stream=RandStream('mlfg6331_64','RandnAlg','Polar');
randn(stream,1,5)

See Also

@RandStream, rand (RandStream), randn (RandStream), randi (RandStream), getDefaultStream (RandStream)

RandStream

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