gbrand - Sampling from random distributions
gbrand [options] NAME PARAMETERS...
Generates a grid of i.i.d. samples from a distribution. The name
of the distribution and its parameters are specified on the command line.
the column index. Indeces start from 1. If more than one function are
provided they are printed one after the other. The type of random number
generator and the default seed can be set with the environment variables
GSL_RNG_TYPE and GSL_RNG_SEED, respectively, as documented in GSL
manual.
- -r
- specify number of rows (default 1)
- -c
- specify number of columns (default 1)
- -R
- set the seed (default 1)
- -v
- verbose mode
- -h
- this help
- beta
- a,b = shape parameters
- binomial
- p = probability, N = number of trials
- bivariate-gaussian
- sigmax = x std.dev., sigmay = y std.dev., rho = correlation
- cauchy
- a = scale parameter
- chisq
- nu = degrees of freedom
- dir-2d
- none
- dir-3d
- none
- dir-nd
- n1 = number of dimensions of hypersphere
- erlang
- a = scale parameter, b = order
- exponential
- mu = mean value
- exppow
- a = scale parameter, b = power (1=exponential, 2=gaussian)
- aexppow
- m = mode, al = left scale, ar = right scale, bl = left shape, br = right
shape
- fdist
- nu1, nu2 = degrees of freedom parameters
- flat
- a = lower limit, b = upper limit
- gamma
- a = order, b = scale
- gaussian-tail
- a = lower limit, sigma = standard deviation
- gaussian
- sigma = standard deviation
- geometric
- p = bernoulli trial probability of success
- gumbel1
- a = order, b = scale parameter
- gumbel2
- a = order, b = scale parameter
- hypergeometric
- n1 = # tagged, n2 = # untagged, t = number of trials
- laplace
- a = scale parameter
- landau
- none
- levy
- c = scale, a = power (1=cauchy, 2=gaussian)
- levy-skew
- c = scale, a = power (1=cauchy, 2=gaussian), b = skew
- logarithmic
- p = probability
- logistic
- a = scale parameter
- lognormal
- zeta = location parameter, sigma = scale parameter
- negative-binomial
- p = probability, a = order
- pareto
- a = power, b = scale parameter
- pascal
- p = probability, n = order (integer)
- poisson
- mu = scale parameter
- rayleigh-tail
- a = lower limit, sigma = scale parameter
- rayleigh
- sigma = scale parameter
- tdist
- nu = degrees of freedom
- ugaussian-tail
- a = lower limit
- ugaussian
- none
- weibull
- a = scale parameter, b = exponent
- pareto3
- a = power, b = exponential parameter, s = scale parameter
Written by Giulio Bottazzi
Report bugs to <gbutils@googlegroups.com>
Package home page
<http://cafim.sssup.it/~giulio/software/gbutils/index.html>
Copyright © 2001-2018 Giulio Bottazzi This program is free
software; you can redistribute it and/or modify it under the terms of the
GNU General Public License (version 2) as published by the Free Software
Foundation;
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
Public License for more details.