Object to simplify option passing for PerlDL subroutines. Allows you to merge a user defined options with defaults. A simplified (non-OO) interface is provided....

This package contains one function (at present) which returns PDL::Option objects for default settings for plot windows and plot commands. This should be complemented by functions that could affect this such as file reading commands etc....

An implementation of online docs for PDL....

Methods and functions for type conversions, PDL creation, type conversion, threading etc....

With Test::PDL, you can compare two piddles for equality. The comparison is performed as thoroughly as possible, comparing types, dimensions, bad value patterns, and finally the values themselves. The exact behaviour can be configured by setting cert...

This module aims to contain useful functions. Honest....

This module contains basic utility functions for creating and manipulating piddles. Most of these functions are simplified interfaces to the more flexible functions in the modules PDL::Primitive and PDL::Slices....

This module serves the dual purpose of providing an interface to parts of the slatec library and showing how to interface PDL to an external library. Using this library requires a fortran compiler; the source for the routines is provided for convenie...

These routines act on PDLs as N-dimensional objects, not as threaded sets of 0-D or 1-D objects. The file is sort of a catch-all for broadly functional routines, most of which could legitimately be filed elsewhere (and probably will, one day). ImageN...

Miscellaneous 2D image processing functions - for want of anywhere else to put them....

callext() loads in a shareable object (i.e. compiled code) using Perl's dynamic loader, calls the named function and passes a list of piddle arguments to it. It provides a reasonably portable way of doing this, including compiling the code with the r...

This module adds the ability to read and write Starlink N-dimensional data files as N-dimensional PDLs. You must have the Starlink NDF library installed to use it. The library is distributed under the GPL and is available from "http://www.starlink.ac...

The traditional way of creating PDL piddle from CSV data is via rcols function. my $pdl = rcols("data.csv", [1..4], { DEFTYPE=>double, COLSEP=>"," }); This module provides alternative implementation based on Text::CSV_XS which should be significantly...

Image I/O for PDL based on the netpbm package. This package implements I/O for a number of popular image formats by exploiting the xxxtopnm and pnmtoxxx converters from the netpbm package (which is based on the original pbmplus by Jef Poskanzer). Net...

For creating a piddle from database data one can use the following simple approach: use PDL; use DBI; my $dbh = DBI->connect($dsn); my $pdl = pdl($dbh->selectall_arrayref($sql_query)); However this approach does not scale well for large data (e.g. SQ...

PDL::CCS::Nd provides an object-oriented implementation of sparse N-dimensional vectors & matrices using a set of low-level PDLs to encode non-missing values. Currently, only a portion of the PDL API is implemented....

This module provides fitting functions for PDL. Currently, only Levenberg-Marquardt fitting is implemented. Other procedures should be added as required. For a fairly concise overview on fitting see Numerical Recipes, chapter 15 "Modeling of data"....