G'day SOMEN,

Welcome to the Monastery.

[Assumption: $sum is the global dipeptide count.]

Your problem lies here: 

my $sum = sum(values %{$count{$_}});

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You're counting the number of unique dipeptides found; not a sum of their values.

Look at how you populate %count: 

$count{$seq}{$1}++

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So, %count has a series of keys representing sequences ($seq). Each of those has a series of keys representing a dipeptide ($_).

When you access %count, i.e. with $count{$_}, you're only drilling down to the sequence. You need to go one more level to access the dipeptides.

-- Ken

In reply to Re: how do i count the 22 selected di-peptides from a multifasta file separately for each sequence by kcott
in thread how do i count the 22 selected di-peptides from a multifasta file separately for each sequence by SOMEN

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