Re: How do I create a matrix?

#!/usr/bin/perl -w
use strict;
use PDL::Matrix;

my $m = pdl [
         [1,2,3],
         [4,5,6],
         [7,8,9]
];
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Which then also allows you to perform clean, fast math on them.

my $m = pdl [
         [1,2,3],
         [4,5,6],
         [7,8,9]
];

my $n = pdl [
         [1,0,0],
         [0,1,0],
         [0,0,1]
];

my $r = $m x $n;
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Comment on Re: How do I create a matrix? Select or Download Code

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Re^2: How do I create a matrix? by etj (Priest) on Jul 08, 2022 at 19:35 UTC
The above appears not to use PDL::Matrix-specific features (which are full of gotchas); better practice would be just to `use PDL`, and all the rest of the code above will then work as given. Try `perldl` after installing PDL, the online help is really good. For better matrix support, try also PDL::LinearAlgebra.	[reply] [d/l] [select]

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