| Bio::Tools::RandomDistFunctions(3pm) | User Contributed Perl Documentation | Bio::Tools::RandomDistFunctions(3pm) |
Bio::Tools::RandomDistFunctions - A set of routines useful for generating random data in different distributions
use Bio::Tools::RandomDistFunctions;
my $dist = Bio::Tools::RandomDistFunctions->new();
for my $v ( 1..1000 ) {
my $birth_dist = $dist->rand_birth_distribution($lambda);
# ... do something with the variable
}
Most of the code is based on the C implementation of these routines in Mike Sanderson's r8s's package. See http://loco.biosci.arizona.edu/r8s/ for information on his software.
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Please direct usage questions or support issues to the mailing list:
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rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible.
Report bugs to the Bioperl bug tracking system to help us keep track of the bugs and their resolution. Bug reports can be submitted via the web:
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Email jason-at-bioperl.org
Thanks to Mike Sanderson for assistance in the getting this implementation together.
The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _
Title : rand_birth_distribution
Usage : my $randvar = $dist->
rand_birth_distribution($lambda);
Function: Returns a random number from a birth process waiting
time with a fixed interval
1.0. Times are measured from 0=present,1=root;
Returns : floating point number
Args : $lambda ( > 0 )
References : This is based on code by Mike Sanders in r8s.
Ross, Stochastic Processes, p. 145 for the density
Title : rand_geometric_distribution
Usage : my $randvar = $dist->rand_geometric_distribution($param);
Function: Returns a random geometric variate distributed with
parameter $param, according to
c.d.f. 1 - ( 1- param) ^ n
Returns : integer
Args : $param ( 0 > $param < 1 )
Title : rand_exponentional_distribution
Usage : my $var = $dist->rand_exponentional_distribution($param);
Function: Returns a random exponential variate distributed with parameter
$param, according to c.d.f 1 - e^(-param * x)
Returns : floating point number
Args : $param ( > 0 )
Title : rand_normal_distribution Usage : my $var = $dist->rand_normal_distribution() Function: Returns a random normal (gaussian) variate distributed Returns : floating point number Args : none
| 2021-08-15 | perl v5.32.1 |