Scilab Function
Last update : 00/00/0000
rand - random number generator
Calling Sequence
- rand(m1,m2,.. [,key])
- rand(x [, key])
- rand()
- rand(key)
- rand("seed" [,n])
- rand("info")
Parameters
-
mi: integers
-
key: character string with value in "uniform", "normal"
-
x: a matrix. Only its dimensions are taken into account.
Description
random matrix generator.
Without key argument the syntaxes below produce random matrices with
the current random generator (default is "uniform")
-
rand(m1,m2) is a random matrix of dimension m1 by m2.
-
rand(m1,m2,..,mn) is a random matrix of dimension m1 by m2,.. by mn.
-
rand(a) is a random matrix of same size as a. rand(a) is complex if a is a complex matrix.
-
rand() : with no arguments gives a scalar whose value changes each time it is referenced.
If present, the key argument allows to specifie an other random distribution.
-
rand('uniform') The current random generator is set to a uniform random generator. Random numbers are
uniformly distributed in the interval (0,1).
-
rand('normal') The current random generator is set to a Gaussian (with mean 0 and variance 1) random number generator.
-
str=rand('info') return the type of the default random generator ('uniform' or 'normal')
IT is possible to (re-)initialize the seed of the rand generator:
-
rand('seed') returns the current value of the seed.
-
rand('seed',n) puts the seed to n. (by default n=0 at first call).
Remark
Use the more powerful function grand instead.
Examples
x=rand(10,10,'uniform')
rand('normal')
rand('info')
y=rand(x,'normal');
x=rand(2,2,2)
See Also
grand, ssrand,