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://ginger.ucdavis.edu/ for information on his software. This code tries to be fast and use available faster BigInt and GMP library methods when those modules are available.

Mailing Lists
User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to the Bioperl mailing list. Your participation is much appreciated. bioperl-l@bioperl.org - General discussion http://bioperl.org/MailList.shtml - About the mailing lists

Reporting Bugs
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 email or the web: bioperl-bugs@bioperl.org http://bioperl.org/bioperl-bugs/ 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 _

birth_distribution
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

rand_geometric_distribution
Title : rand_geometric_distribution Usage : my $randvar = $dist->rand_geometric_distribution($param); Function: Returns a random geometric variate distributed with paramater $param, according to c.d.f. 1 - ( 1- param) ^ n Returns : integer Args : $param ( 0 > $param < 1 )

rand_exponentional_distribution
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 )

rand_normal_distribution
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