Simple matrix operations

srdst13 has asked for the wisdom of the Perl Monks concerning the following question:

I have a rather large matrix (200 columns by several hundred to thousands of rows) that I would like to be able to take slices of (select columns, rows) and then operate on the slices (like plotting, etc.). In the spirit of perl's many ways to do this, can folks point me to useful modules (one is Math::Matrix that looks rather dated) that might allow me to do this fast (this will be used in a CGI environment)?

Thanks.

Comment on Simple matrix operations

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Re: Simple matrix operations by Zaxo (Archbishop) on Dec 22, 2004 at 12:09 UTC
PDL is what you want. It even includes plotting modules. After Compline, Zaxo	[reply]
Re^2: Simple matrix operations by srdst13 (Pilgrim) on Dec 23, 2004 at 03:02 UTC
PDL looks like the answer. I continue to be blown away by what is available in the world of perl. Thanks, Zaxo and Joost.	[reply]
Re: Simple matrix operations by ozone (Friar) on Dec 22, 2004 at 12:17 UTC
I think this one of those few instances where Perl is the wrong tool for the job. High speed math operations are probably best done in C++. Having said that, CGI is best done in Perl :-) Anyway, a quick search on CPAN returns quite a few results, with Math::Matrix at the top of the list. I don't think it's dated, just probably perfect and so not in need of changes :-D What's the Perl structure of your matrix?	[reply]
Re^2: Simple matrix operations by Joost (Canon) on Dec 22, 2004 at 12:45 UTC
Altough pure perl might not be the best solution, PDL is really realy good, and made for exactly these kind of operations. And it's blazingly fast, as most of it's written in C / Fortran. "What should it profit a man, if he should win a flame war, yet lose his cool?"	[reply]