I had an earlier question regarding printing data in succesive columns. It was suggested that I use printf to do this, but I'm not doing something right, though I have no clue what. When looping my program, all the data from a particular array (@qqq) prints out in a column. Fine, except after the reiterations of this loop, the column only gets longer to make one long column. It may perhaps be easier to sort things and print the columns one row at a time. I can't figure out how to do that effectively either. The original text file looks something like this:
000217 P008 N N
000217 P009 G G
000217 P010 A A
000217 P011 A G
000217 P012 A A
000217 P013 A G
000217 P014 A A
000217 P015 A G
000217 P016 A G
times about 10,000. After joining the letters, I loop through the first 90; this 90x loop is then reiterated about 301 times, hopefully to bring me 301 separate columns side by side. Easier said than done!! Ideas anyone? 
open (FILE, "brca1_prettybase.txt");
our @data='';
@data = <FILE>;
close (FILE);

$i=0;
while ($i <=300) {
#for ($i=0; $i<=89; $i++) {
  # @zz=$data[$i];
@zz=splice(@data, 0, 89);
foreach $_(@zz){
   $a='';
   $b='';
   $c='';
   $d='';
   ($a, $b, $c, $d) = split(/[\t]/,$_);
    $qq=join ('/',$c,$d);
    push (@qqq, $qq);
    #print "$b\n";
   }
print "$a\n";
print @qqq;
$i++;
}

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In reply to how to use printf correctly... by bioinformatics

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