Perl Data Language
PDL (which is an acronym for Perl Data Language) is a set of array programming extensions to the Perl programming language which, like Perl, is free software. It is an extension to Perl v5 which is intended for scientific and other data intensive programming tasks. Perl's data structures are intended for small to medium sized analysis tasks: they embody simple data structures and include considerable behind-the-scenes magic for type conversion, variable size, and the like. Numerical tasks such as image processing and computer modeling of physical systems require more structured data, and PDL supplies this need by including more traditional array constructs and additional syntax to describe vector processes. On a computer with both Perl and PDL installed, any Perl script can use the PDL functionality by declaring "use PDL;".
Read more about Perl Data Language: Language Design, Graphics, I/O, Perldl, Implementation
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