bin/transpose_matrix.pl

   1 #!/usr/bin/perl
   2 # 'transpose' swaps rows and columns in the given tab-delimited table.
   3 # syntax perl transpose.pl input.txt > output.txt
   4
   5 while (<>) {
   6   chomp;
   7   @line = split /\t/;
   8   $oldlastcol = $lastcol;
   9   $lastcol = $#line if $#line > $lastcol;
  10   for (my $i=$oldlastcol; $i < $lastcol; $i++) {
  11     $outline[$i] = "\t" x $oldlastcol;
  12   }
  13   for (my $i=0; $i <=$lastcol; $i++) {
  14     $outline[$i] .= "$line[$i]\t"
  15   }
  16 }
  17 for (my $i=0; $i <= $lastcol; $i++) {
  18   $outline[$i] =~ s/\s*$//g;
  19   print $outline[$i]."\n";
  20 }