It's really just a matter of inverting the order of the indexes.

From an earlier thread (How to swap rows with columns?), 

my @data;
while (<>) {
   my @fields = split ' ';
   my $col = $. - 1;
   for my $row (0..$#fields) {
      $data[$row][$col] = $fields[$row];
   }
}

[download]

Tested.

In reply to Re: switch columns and rows by ikegami
in thread switch columns and rows by Not_yetta_Monk

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