How about: 
my $data = "whatever";
my @pixels = [][];
for (my $i = 1; $i < $height; $i++) {
    (@pixels[$i][1 .. $width], $data) = split('', $data, $width);
}

[download]
(untested)

In reply to Re: How can I cleanly split a string of text into a two-dimensional array by chromatic
in thread How can I cleanly split a string of text into a two-dimensional array by vroom

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