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    <p>I actually found the answer to this. The code looks a bit complicated though.</p> <pre><code>#!/usr/bin/env perl use strict; use warnings; sub main { my $file; if (@ARGV != 1) { die "Usage: perl hashofhash_sort.pl &lt;filename&gt;\n"; } else { $file = $ARGV[0]; } open(IN, $file) or die "Error!! Cannot open the $file file: $!\n"; my @file = &lt;IN&gt;; chomp @file; my ($entrez_gene, $loci, $chr, $band, $pq, $band_num); my (%chromosome, %loci_entrez); foreach my $line (@file) { if ($line =~ /(\d+),(.+)/) { # Entrez genes $entrez_gene = $1; # Locus like 12p23.4 $loci = $2; if ($loci =~ /^(\d+)(.+)?/) { # chromosome number alone (only numericals) $chr = $1; if ($2) { # locus minus chromosome number. If 12p23.4, then $band is p23.4 $band = "$2"; if ($band =~ /^([pq])(.+)/) { # either p or q $pq = $1; # stores the numericals. for p23.4, stores 23.4 $band_num = $2; } if (exists $chromosome{$chr}) { if (exists $chromosome{$chr}{$pq}) { push (@{$chromosome{$chr}{$pq}}, $band_num); } else { $chromosome{$chr}{$pq} = [$band_num]; } } else { $chromosome{$chr}{$pq} = [$band_num]; } } } } } # End of foreach loop foreach my $key (sort {$a &lt;=&gt; $b} keys %chromosome) { my %seen = (); foreach my $key2 (sort {$a cmp $b } keys %{$chromosome{$key}}) { my @unique = grep { ! $seen{$_}++ } @{$chromosome{$key}{$key2}}; my @sorted = sort @unique; foreach my $element (@sorted) { my $sorted_locus = "$key$key2$element"; if (exists $loci_entrez{$sorted_locus}) { foreach my $element2 (@{$loci_entrez{$sorted_locus}}) { print "$element2,$sorted_locus\n"; } } } } } } # End of main main(); </code></pre>
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    1. USJordan
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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