while() { push @full_data , [split] while (); for $arr_ref1 (@full_data) { for $arr_ref2(@full_data) { $variable1 = ''; $variable2 = ''; for my $index1 (3..4) { $ratio1 = sprintf( "%.4f%s", $$arr_ref2[$index1]/$$arr_ref1[$index1],"\t"); $variable1 .= $ratio1; } for my $index2 (5..6) { $ratio2 = sprintf( "%.4f%s", $$arr_ref2[$index2]/$$arr_ref1[$index2],"\t"); $variable2 .= $ratio2; } #Calculate Average @arrayint1 = split (/\t/,$variable1); $avg1 = &average (\@arrayint1); #print OUT1 "\t$avg1"; @arrayint2 = split (/\t/,$variable2); $avg2 = &average (\@arrayint2); #print OUT1 "\t$avg2"; #Calculate SD @arrayint1 = split (/\t/,$variable1); $std1 = &stdev(\@arrayint1); #print OUT1 "\t$std1"; @arrayint2 = split (/\t/,$variable2); $std2 = &stdev(\@arrayint2); #print OUT1 "\t$std2"; #Calculate CV $cv1 = $std1/$avg1; $cv2 = $std2/$avg2; my $outputa = "$$arr_ref1[0]"; my $outputb = "$variable1\t$variable2\t"; my $outputc = "\t$avg1\t$avg2"; my $outputd = "\t$cv1\t$cv2"; ###### print everything out ##################### my $key = "$outputa"."$outputb". "$outputc"."outputd"; print OUT1 $key; print OUT1 "\n"; } } sub average{ my($data) = @_; if (not @$data) { die("Empty array\n"); } my $total = 0; foreach (@$data) { $total += $_; } my $average = $total / @$data; return $average; } sub stdev{ my($data) = @_; if(@$data == 1){ return 0; } my $average = &average($data); my $sqtotal = 0; foreach(@$data) { $sqtotal += ($average-$_) ** 2; } my $std = ($sqtotal / (@$data-1)) ** 0.5; return $std; } #### _OUTPUT_ M446T27 1 1 1 1 1 1 0 0 M446T27 1.75 2.66 1.80 2.16 2.20 1.98 0.29 0.12 M446T27 1.00 1.64 0.99 1.09 1.32 1.04 0.34 0.06 . .