How are you building your matrix? If you're using an array of arrays, simply loop through the outer array and print the data in the inner array: 

#!/usr/bin/perl -w

use strict;

my @aoa = get_data;

foreach my $row(@aoa) { 
    print "$row->[$_] " for (1, 2, 3, 5, 9, 10, 38, 126);
    print "\n";
}

[download]

If you don't know what columns you need to print ahead of time, build an array of the indices you need and use 

print "$row->[$_] " for @indices;

[download]

-Mike

In reply to Re: How can I print out part of the matrix by mfriedman
in thread How can I print out part of the matrix by Anonymous Monk

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