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Top Forums UNIX for Beginners Questions & Answers How to count the length of fasta sequences? Post 303033626 by RavinderSingh13 on Tuesday 9th of April 2019 09:24:20 AM
Old 04-09-2019
Quote:
Originally Posted by dineshkumarsrk
Thank you singh,
Your command prints all the sequences. However, I need to print only few sequences length as listed in id.txt file. If I did not understand your commands properly, please let me know, where to include id.txt file in your command?
Oh ok, I was in impression that you want to print all seq strings length in a single Input_file, could you please try following now.
Code:
awk 'FNR==NR{a[$0];next} /^>/ && sub(/^>/,""){;found=val="";if($0 in a){val=$0;found=1};next} found{print val,length($0)} ' ids.txt  Input_file

Output will be as follows.
Code:
seq1 6
seq2 7

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
 

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TFBS::PatternGen::SimplePFM(3pm)			User Contributed Perl Documentation			  TFBS::PatternGen::SimplePFM(3pm)

NAME
TFBS::PatternGen::SimplePFM - a simple position frequency matrix factory SYNOPSIS
my @sequences = qw( AAGCCT AGGCAT AAGCCT AAGCCT AGGCAT AGGCCT AGGCAT AGGTTT AGGCAT AGGCCT AGGCCT ); my $patterngen = TFBS::PatternGen::SimplePFM->new(-seq_list=>@sequences); my $pfm = $patterngen->pattern(); # $pfm is now a TFBS::Matrix::PFM object DESCRIPTION
TFBS::PatternGen::SimplePFM generates a position frequency matrix from a set of nucleotide sequences of equal length, The sequences can be passed either as strings, as Bio::Seq objects or as a fasta file. This pattern generator always creates only one pattern from a given set of sequences. new Title : new Usage : my $db = TFBS::PatternGen::SimplePFM->new(%args); Function: the constructor for the TFBS::PatternGen::SimplePFM object Returns : a TFBS::PatternGen::SimplePFM obkect Args : This method takes named arguments; you must specify one of the following -seq_list # a reference to an array of strings # and/or Bio::Seq objects # or -seq_stream # A Bio::SeqIO object # or -seq_file # the name of the fasta file containing # all the sequences pattern all_patterns patternSet The three above methods are used fro the retrieval of patterns, and are common to all TFBS::PatternGen::* classes. Please see TFBS::PatternGen for details. perl v5.14.2 2008-01-24 TFBS::PatternGen::SimplePFM(3pm)
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