ikegami understates - PDL is the comprehensive linear algebra package for Perl. Its major downfall is its documentation though. Knowing some C is almost a prerequisite. Other CPAN modules may be better suited depending on the complexity of the task. | [reply] |
I don't know which class of problems you've solved with PDL that requires C knowledge, but I've been using PDL for many years and have very rarely needed to do any coding in C (and then only when working on extremely compute intensive problems). I've worked with a number of people with little or no knowledge of coding outside of Perl who have very successfully used PDL to solve complex problems. In my experience, knowledge of C is definitely not a prerequisite.
You do have to parse the documentation, but there's a very helpful community of users that can point you in the right direction. Matrix questions pop up on the users mailing list often; see http://pdl.perl.org/maillists/
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when you don't know what you're talking about it's hard to express a competent oppinion
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