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rand(1) Scilab Function rand(1)
NAME
rand - random number generator
CALLING SEQUENCE
rand(m,n [,rtype])
rand(x [, rtype])
rand('key'[,n])
DESCRIPTION
random matrix generator.
rand(m,n) is a random matrix of dimension mxn.
rand(a) is a random matrix of same size as a. rand(a) is com-
plex if a is a complex matrix
rand('uniform') The default random generator is set to a uniform random
number generator.
rand('normal') The default random generator is set to a Gaussian ran-
dom number generator.
rand('seed') returns the current value of the seed.
rand('seed',n) puts the seed to n. (n=0 at first call).
str=rand('info') return the type of the default random generator ('uni-
form' or 'normal')
rand : with no arguments gives a scalar whose value changes each time it is
referenced. By default, random numbers are uniformly distributed in the
interval (0,1). rand('normal') switches to a normal distribution with mean
0 and variance 1. rand('uniform') switches back to the uniform distribu-
tion.
The type of the random generator can also be locally changed by the use of
the extra parameter rtype ( which can be 'uniform' or 'normal'
EXAMPLE
x=rand(10,10,'uniform')
rand('normal')
rand('info')
y=rand(x,'normal');
SEE ALSO
ssrand
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