Hi all, I came across a program which transpose the contents in the file. I would like to know what is meant by the line :  $outline[$i] = "\t" x $oldlastcol; The entire code is as follows: 

while (<MYFILE>) {
  chomp;
  @line = split /\t/;
  $oldlastcol = $lastcol;
  $lastcol = $#line if $#line > $lastcol;
  for (my $i=$oldlastcol; $i < $lastcol; $i++) {
    $outline[$i] = "\t" x $oldlastcol;
  }
  for (my $i=0; $i <=$lastcol; $i++) {
    $outline[$i] .= "$line[$i]\t"
  }
}
for (my $i=0; $i <= $lastcol; $i++) {
  $outline[$i] =~ s/\s*$//g;
  print $outline[$i]."\n";
}

[download]
Thanks.

In reply to Transpose the contents of the file by snape

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