1PDL(3)                User Contributed Perl Documentation               PDL(3)
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NAME

6       PDL - the Perl Data Language
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DESCRIPTION

9       (For the exported PDL constructor, pdl(), see PDL::Core)
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11       PDL is the Perl Data Language, a perl extension that is designed for
12       scientific and bulk numeric data processing and display.  It extends
13       perl's syntax and includes fully vectorized, multidimensional array
14       handling, plus several paths for device-independent graphics output.
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16       PDL is fast, comparable and often outperforming IDL and MATLAB in real
17       world applications. PDL allows large N-dimensional data sets such as
18       large images, spectra, etc to be stored efficiently and manipulated
19       quickly.
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VECTORIZATION

22       For a description of the vectorization (also called "threading"), see
23       PDL::Core.
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INTERACTIVE SHELL

26       The PDL package includes an interactive shell. You can learn about it,
27       run "perldoc perldl", or run the shell "perldl" or "pdl2" and type
28       "help".
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LOOKING FOR A FUNCTION?

31       If you want to search for a function name, you should use the PDL shell
32       along with the "help" or "apropos" command (to do a fuzzy search).  For
33       example:
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35        pdl> apropos xval
36        xlinvals        X axis values between endpoints (see xvals).
37        xlogvals        X axis values logarithmicly spaced...
38        xvals           Fills a piddle with X index values...
39        yvals           Fills a piddle with Y index values. See the CAVEAT for xvals.
40        zvals           Fills a piddle with Z index values. See the CAVEAT for xvals.
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42       To learn more about the PDL shell, see perldl or pdl2.
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LANGUAGE DOCUMENTATION

45       Most PDL documentation describes the language features. The number of
46       PDL pages is too great to list here. The following pages offer some
47       guidance to help you find the documentation you need.
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49       PDL::FAQ
50            Frequently asked questions about PDL. This page covers a lot of
51            questions that do not fall neatly into any of the documentation
52            categories.
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54       PDL::Tutorials
55            A guide to PDL's tutorial-style documentation. With topics from
56            beginner to advanced, these pages teach you various aspects of PDL
57            step by step.
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59       PDL::Modules
60            A guide to PDL's module reference. Modules are organized by level
61            (foundation to advanced) and by category (graphics, numerical
62            methods, etc) to help you find the module you need as quickly as
63            possible.
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65       PDL::Course
66            This page compiles PDL's tutorial and reference pages into a
67            comprehensive course that takes you from a complete beginner level
68            to expert.
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70       PDL::Index
71            List of all available documentation, sorted alphabetically. If you
72            cannot find what you are looking for, try here.
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MODULES

75       PDL includes about a dozen perl modules that form the core of the
76       language, plus additional modules that add further functionality.  The
77       perl module "PDL" loads all of the core modules automatically, making
78       their functions available in the current perl namespace.  Some notes:
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80       Modules loaded by default
81            See the SYNOPSIS section at the end of this document for a list of
82            modules loaded by default.
83
84       PDL::Lite and PDL::LiteF
85            These are lighter-weight alternatives to the standard PDL module.
86            Consider using these modules if startup time becomes an issue.
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88       Exports
89            "use PDL;" exports a large number of routines into the calling
90            namespace.  If you want to avoid namespace pollution, you must
91            instead "use PDL::Lite", and include any additional modules
92            explicitly.
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94       PDL::NiceSlice
95            Note that the PDL::NiceSlice syntax is NOT automatically loaded by
96            "use PDL;".  If you want to use the extended slicing syntax in a
97            standalone script, you must also say "use PDL::NiceSlice;".
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99       PDL::Math
100            The PDL::Math module has been added to the list of modules for
101            versions later than 2.3.1. Note that PDL::Math is still not
102            included in the PDL::Lite and PDL::LiteF start-up modules.
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SYNOPSIS

105        use PDL; # Is equivalent to the following:
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107          use PDL::Core;
108          use PDL::Ops;
109          use PDL::Primitive;
110          use PDL::Ufunc;
111          use PDL::Basic;
112          use PDL::Slices;
113          use PDL::Bad;
114          use PDL::MatrixOps;
115          use PDL::Math;
116          use PDL::Version;
117          use PDL::IO::Misc;
118          use PDL::IO::FITS;
119          use PDL::IO::Pic;
120          use PDL::IO::Storable;
121          use PDL::Lvalue;
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125perl v5.32.1                      2021-02-15                            PDL(3)