PDL::Tutorials - A guide to PDL's tutorial documentation.
These are our migration guides for users familiar with other types
of numerical analysis software.
- PDL::MATLAB
- Migration guide for MATLAB users. This page explains the key differences
between MATLAB and PDL from the point of view of a MATLAB user.
- PDL::Scilab
- Migration guide for Scilab users. This page explains the key differences
between Scilab and PDL from the point of view of a Scilab user.
- PDL::Philosophy
- Why did we write PDL? This document explains some of the history and
motivation behind the Perl Data Language. It is an attempt to answer the
question "Why PDL?".
- PDL::QuickStart
- Quick introduction to PDL features. A hands-on guide suitable for complete
beginners. This page assumes no previous knowledge of Perl or PDL.
- PDL::Indexing
- After you have read the QuickStart guide, you should follow up with this
document. This guide goes more deeply into the concepts of
"indexing" and "slicing" and how they form the core of
numerical analysis with PDL.
- PDL::Broadcasting
- Broadcasting is one of PDL's most powerful features. If you know
MATLAB, you've heard of "vectorizing". Well, broadcasting
is like "vectorizing on steroids". It lets you make very fast
and compact code by avoiding nested loops. All vector-based languages do
this, but PDL generalizes the technique to all sorts of applications.
This tutorial introduces PDL's broadcasting feature, and it
shows an example implementing Conway's Game of Life in 10 lines and 80
times faster than a classical implementation.
- PDL::BadValues
- Sometimes it is useful to specify that a certain value is "bad"
or "missing". Scientific instruments some times include portions
of invalid data. For example, a CCD camera might produce an image with
over-exposed pixels. PDL's "bad values" feature gives you an
easy way to deal with this sort of imperfect data.
- PDL::Tips
- Tips and suggestions for using PDL. This page is an assorted collection of
programming tidbits that some PDL users have found useful. Some of these
tips might be of help when you write your programs.
- PDL::PP
- PDL's Pre-Processor is one of PDL's most powerful features. You write a
function definition in special markup and the preprocessor generates real
C code which can be compiled. With PDL:PP you get the full speed of native
C code without having to deal with the full complexity of the C
language.
- PDL::API
- A simple cookbook explaining how to create ndarray manually, either from
Perl or from C/XS code. This page covers the PDL core routines that
comprise the PDL API. If you need to access ndarrays from C/XS, this is
the document for you.
- PDL::Internals
- Description of the inner workings of the PDL module. Very few people need
to see this. This page is mainly for PDL developers, or people interested
in debugging PDL or changing the internals of PDL. If you can read this
document and understand all of it, and you additionally understand
PDL::PP, you will be awarded the title of "PDL Guru".
Copyright 2010 Daniel Carrera (dcarrera@gmail.com). You can
distribute and/or modify this document under the same terms as the current
Perl license.
See: http://dev.perl.org/licenses/