Raw content of Bio::Tools::Seg
<![CDATA[# $Id: Seg.pm,v 1.6 2002/10/22 07:45:22 lapp Exp $
#
# BioPerl module for Bio::Tools::Seg
#
# Copyright Balamurugan Kumarasamy
#
# You may distribute this module under the same terms as perl itself
#
# POD documentation - main docs before the code
#
# Copyright
#
# You may distribute this module under the same terms as perl itself
# POD documentation - main docs before the code
=head1 NAME
Bio::Tools::Seg - parse Seg output (filter low complexity protein sequence)
=head1 SYNOPSIS
use Bio::Tools::Seg;
my $parser = new Bio::Tools::Seg(-fh =>$filehandle );
while( my $seg_feat = $parser->next_result ) {
#do something
#eg
push @seg_feat, $seg_feat;
}
=head1 DESCRIPTION
Parser for Seg output
=head1 FEEDBACK
=head2 Mailing Lists
User feedback is an integral part of the evolution of this and other
Bioperl modules. Send your comments and suggestions preferably to
the Bioperl mailing list. Your participation is much appreciated.
bioperl-l@bioperl.org - General discussion
http://bioperl.org/MailList.shtml - About the mailing lists
=head2 Reporting Bugs
Report bugs to the Bioperl bug tracking system to help us keep track
of the bugs and their resolution. Bug reports can be submitted via
email or the web:
bioperl-bugs@bioperl.org
http://bugzilla.bioperl.org/
=head1 AUTHOR - Bala
Email savikalpa@fugu-sg.org
=head1 CONTRIBUTORS
Additional contributors names and emails here
=head1 APPENDIX
The rest of the documentation details each of the object methods.
Internal methods are usually preceded with a _
=cut
package Bio::Tools::Seg;
use vars qw(@ISA);
use strict;
use Bio::Root::Root;
use Bio::SeqFeature::FeaturePair;
use Bio::Root::IO;
use Bio::SeqFeature::Generic;
@ISA = qw(Bio::Root::Root Bio::Root::IO);
=head2 new
Title : new
Usage : my $obj = new Bio::Tools::Seg();
Function: Builds a new Bio::Tools::Seg object
Returns : Bio::Tools::Seg
Args : -fh/-file => $val, # for initing input, see Bio::Root::IO
=cut
sub new {
my($class,@args) = @_;
my $self = $class->SUPER::new(@args);
$self->_initialize_io(@args);
return $self;
}
=head2 next_result
Title : next_result
Usage : my $feat = $seg->next_result
Function: Get the next result set from parser data
Returns : Bio::SeqFeature::Generic
Args : none
=cut
sub next_result {
my ($self) = @_;
my $line;
# parse
my $id;
while ($_=$self->_readline()) {
$line = $_;
chomp $line;
next if /^$/;
if ($line=~/^\>/) { #if it is a line starting with a ">"
$line=~/^\>\s*(\S+)\s*\((\d+)\-(\d+)\)\s*complexity=(\S+)/;
my $id = $1;
my $start = $2;
my $end = $3;
my $score = $4;
#for example in this line test_prot(214-226) complexity=2.26 (12/2.20/2.50)
#$1 is test_prot $2 is 214 $3 is 226 and $4 is 2.26
my (%feature);
$feature{name} = $id;
$feature{score} = $score;
$feature{start} = $start;
$feature{end} = $end;
$feature{source} = "Seg";
$feature{primary} = 'low_complexity';
$feature{program} = "Seg";
$feature{logic_name} = 'low_complexity';
my $new_feat = $self->create_feature (\%feature);
return $new_feat;
}
next;
}
}
=head2 create_feature
Title : create_feature
Usage : obj->create_feature(\%feature)
Function: Internal(not to be used directly)
Returns :
Args :
=cut
sub create_feature {
my ($self, $feat) = @_;
# create feature object
my $feature = Bio::SeqFeature::Generic->new(-seq_id => $feat->{name},
-start => $feat->{start},
-end => $feat->{end},
-score => $feat->{score},
-source => $feat->{source},
-primary => $feat->{primary},
-logic_name => $feat->{logic_name},
);
return $feature;
}
1;
]]>