Man page - gbrand(1)
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apt-get install gbutils
Manual
GBRAND
NAMESYNOPSIS
DESCRIPTION
OPTIONS
List of valid distributions (with parameters):
EXAMPLES
AUTHOR
REPORTING BUGS
COPYRIGHT
NAME
gbrand - Sampling from random distributions
SYNOPSIS
gbrand [ options ] NAME PARAMETERS ...
DESCRIPTION
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.
OPTIONS
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-r |
specify number of rows (default 1) |
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-c |
specify number of columns (default 1) |
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-R |
set the seed (default 1) |
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-v |
verbose mode |
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-h |
this help |
List of valid distributions (with parameters):
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beta |
a,b = shape parameters |
binomial
p = probability, N = number of trials
bivariate-gaussian
sigmax = x std.dev., sigmay = y std.dev., rho = correlation
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cauchy |
a = scale parameter |
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chisq |
nu = degrees of freedom |
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dir-2d |
none |
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dir-3d |
none |
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dir-nd |
n1 = number of dimensions of hypersphere |
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erlang |
a = scale parameter, b = order |
exponential
mu = mean value
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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
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fdist |
nu1, nu2 = degrees of freedom parameters |
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flat |
a = lower limit, b = upper limit |
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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
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landau |
none |
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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
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pareto |
a = power, b = scale parameter |
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pascal |
p = probability, n = order (integer) |
poisson
mu = scale parameter
rayleigh-tail
a = lower limit, sigma = scale parameter
rayleigh
sigma = scale parameter
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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
EXAMPLES
gbrand -c 2 -r 100 gaussian 2.5
generate two columns of 100 rows each sampling from a Gaussian distribution with mean 0 and standard deviation 2.5
gbrand -R 145 -r 1000 exponential 1
one hundredth exponantial variates with parameters 1, the the seed of the RNG is set to 145
gbrand -r 10 flat 3 4
ten realizations of the r.v. uniformly distributed in [3,4]
AUTHOR
Written by Giulio Bottazzi
REPORTING BUGS
Report bugs to <gbutils@googlegroups.com>
Package home page <http://cafim.sssup.it/Λgiulio/software/gbutils/index.html>
COPYRIGHT
Copyright Β© 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.