Ok. I have read through some of the links you have given and already arrange my code properly. I'm gonna post the code here (in simplified terms) and show you what I have been doing and I suspect which line I am getting it wrong

Here is part of my code (its the same as the one I post earlier but I change it to make it looks simpler to understand: 

      
    
    $variable1 = '';
    print OUT1 "$first[0]\t$first[1]\t$first[2]\t";
    for my $index1 (3..8)
    {
      my $ratio1 = sprintf( "%.4f%s", $numerator/$denominator,"\t");
      #print OUT1 "$ratio1";
      $variable1 = "$ratio1"; # problem with this line  
    } 
   
    print OUT1 "$variable1";  # print to textfile
    print OUT1 "\n";

[download]

I am trying to print out the output after it run finish the for loop 6 times (3 to 8). The data should arrange something like this:

Desired output (e.g.): 

           A98  0.98  123  4  4  4  4  4   4
           A09  0.87  154  2  6  5  8  3   1
           A12  0.12  873  6  1  2  4  7   0

[download]
Instead, it print out only the last column: 
            A98  0.98  123  4
            A09  0.87  154  1
            A12  0.12  873  0

[download]
so I change to this line by adding the "." to join the 6 columns together 
            $variable1 .= "$ratio1"; # problem with this line

[download]
and I get weird output like this: 
      
            A98  0.98  123  4  4  4  4  4  4
            A98  0.98  123  4  4  4  4  4  4  2  6  
            A98  0.98  123  4  4  4  4  4  4  2  6  4 
            A98  0.98  123  4  4  4  4  4  4  2  6  4  6 
            A98  0.98  123  4  4  4  4  4  4  2  6  4  6  1 ...

[download]

I know its got to do with the placement of the $variable1 .= "$ratio1"; ...but I have simply no idea how to go on and correct from there.

The reason for attempting to capture the values from the for loop is because I want to calculate my average and CV. This variable will then put into hashes with the first three columns and go thru filter to filter out based on certain conditions.

In reply to Re^4: How to store the output from foreach loop into variable/array without printing? by hellohello1
in thread How to store the output from foreach loop into variable/array without printing? by hellohello1

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