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Re: printing out a matrix for a data list

by TedPride (Priest)
on Aug 06, 2006 at 22:20 UTC ( #565875=note: print w/replies, xml ) Need Help??

in reply to printing out a matrix for a data list

Very basic hack:
use strict; use warnings; my ($delim, $row, $col, $val, %matrix, %cols, @rows, @cols) = ' '; while (<DATA>) { chomp; ($row, $col, $val) = split /, /, $_; $matrix{$row}{$col} = $val; $cols{$col} = (); } @cols = sort keys %cols; @rows = sort keys %matrix; print join $delim, ' ', @cols; for $row (@rows) { print "\n", $row; for $col (@cols) { print $delim, $matrix{$row}{$col} ? sprintf('%3d', $matrix{$ro +w}{$col}) : ' -'; } } __DATA__ ob1, ob2, 34 ob1, ob3, 56 ob1, ob4, 12 ob1, ob5, 78 ob1, ob6, 23 ob3, ob1, 56 ob7, ob1, 23 ob8, ob1, 12 ob9, ob1, 90

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Re^2: printing out a matrix for a data list
by Angharad (Pilgrim) on Aug 07, 2006 at 09:19 UTC
    Thank you. Your help is much appreciated :)

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[stevieb]: ahhh yes, it *is* a ref. I had forgotten that. I too have learned something. I quit too!!
[marioroy]: Is List::Util::XS a core Perl module?
[stevieb]: corelist List::Util::XS says "List::Util::XS was first released with perl v5.10.1"
[stevieb]: so yes, since v5.10.1 :)
[MidLifeXis]: According to [metaperl:// corelist], Perl 5.10.1
Lady_Aleena blurbles. One of her favorite modiles is now in "maintenance mode" in favor of a new fangled module.

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