1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
.TH rand 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
rand - random number generator
.SH CALLING SEQUENCE
.nf
rand(m,n [,rtype])
rand(x [, rtype])
rand('key'[,n])
.fi
.SH DESCRIPTION
random matrix generator.
.TP 20
rand(m,n)
is a random matrix of dimension mxn.
.TP
rand(a)
is a random matrix of same size as a. \fVrand(a)\fR is complex if
\fVa\fR is a complex matrix
.TP
rand('uniform')
The default random generator is set to a uniform random number generator.
.TP
rand('normal')
The default random generator is set to a Gaussian random number generator.
.TP
rand('seed')
returns the current value of the seed.
.TP
rand('seed',n)
puts the seed to \fVn\fR. (\fVn=0\fR at first call).
.TP
str=rand('info')
return the type of the default random generator ('uniform' or 'normal')
.LP
\fVrand\fR : 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). \fVrand('normal')\fR switches to a
normal distribution with mean 0 and variance 1.
\fVrand('uniform')\fR switches back to the uniform distribution.
The type of the random generator can also be locally changed by the use
of the extra parameter \fVrtype\fR ( which can be \fV'uniform'\fR or \fV'normal'\fR
.SH EXAMPLE
.nf
x=rand(10,10,'uniform')
rand('normal')
rand('info')
y=rand(x,'normal');
.fi
.SH SEE ALSO
ssrand
|
