Sobol(3)						User Contributed Perl Documentation						  Sobol(3)

NAME

       PDL::RandVar::Sobol -- Sobol subrandom sequences

VERSION

	 Current version is 1.0

SYNOPSIS

	 use PDL::RandVar::Sobol;
	 $m = new PDL::RandVar::Sobol

DESCRIPTION

       Sobol subrandom sequences are used for more uniform sampling of a domain than normal random variables can achieve.  They're described cur-
       sorily in W.H. Press's _Numerical_ _Recipes_, 2nd edition, section 7.7 (Cambridge Univ. Press), and this implementation is based on their
       description.

History
	 0.01	 4-Dec-2001 -- Basic functionality (CED)
	 0.1	11-Dec-2001 -- First fully functional version (CED)
	 1.0	 9-Jan-2002 -- Tests out OK (CED)

       Author, license, no warranty

       This file copyright(C) 2001, 2002 Craig DeForest (cdeforest@solar.stanford.edu).  This software/documentation may be distributed under the
       same terms as PDL itself (license available at http://pdl.perl.org). This package comes with NO WARRANTY.

       Bugs:

       Should have a way of reproducibly seeding the initial values.  For now, you always get the same initial seed with every random variable --
       this is the Wrong way to do it.

FUNCTIONS

       new

       Construct a new Sobol subrandom variable

	 Signature: (See PDL::RandVar::new)

	 $a = new PDL::RandVar::Sobol(<size>,<opt>);

       Options:

       range
	  2xn piddle containing min and max values for each dimension.

	 $a = new PDL::RandVar::Sobol(2,{range=>pdl([$xmin,$xmax],[$ymin,$ymax])});
	 $xy = sample $a;

perl v5.8.0							    2002-05-16								  Sobol(3)