# BioPerl module for Bio::Tools::Run::Alignment::Proda
#
# Please direct questions and support issues to <bioperl-l@bioperl.org>
#
# Cared for by Albert Vilella
#
#
#
# You may distribute this module under the same terms as perl itself
#
# POD documentation - main docs before the code
=head1 NAME
Bio::Tools::Run::Alignment::Proda - Object for the calculation of sets
of multiple sequence alignments from a set of unaligned sequences or
alignments using the Proda program.
=head1 SYNOPSIS
# Build a Proda alignment factory
$factory = Bio::Tools::Run::Alignment::Proda->new(@params);
# Pass the factory a list of sequences to be aligned.
$inputfilename = 't/cysprot.fa';
# @alns is an array of SimpleAlign objects.
@alns = $factory->align($inputfilename);
# or where @seq_array is an array of Bio::Seq objects
$seq_array_ref = \@seq_array;
@alns = $factory->align($seq_array_ref);
# Or one can pass the factory a pair of (sub)alignments
#to be aligned against each other, e.g.:
#There are various additional options and input formats available.
#See the DESCRIPTION section that follows for additional details.
$factory = Bio::Tools::Run::Alignment::Proda->new();
@alns = $factory->align($seq_array_ref);
=head1 DESCRIPTION
You can get it and see information about it at this URL
http://proda.stanford.edu
This program will return one or more local alignments for the
different repeated or rearranged regions in the sequences. If a
sequences contains more than one of those patterns, it will be present
more than once in the alignment. The difference will be in that the id
contain the start and end, like myseqid(123-456) and myseqid(567-890),
instead of simply myseqid as in the original input file. This is true
for all the output ids, even if they are present only once.
=head2 Helping the module find your executable
You will need to enable Proda to find the proda program. This can be
done in (at least) three ways:
1. Make sure the proda executable is in your path (i.e.
'which proda' returns a valid program
2. define an environmental variable PRODADIR which points to a
directory containing the 'proda' app:
In bash
export PRODADIR=/home/progs/proda or
In csh/tcsh
setenv PRODADIR /home/progs/proda
3. include a definition of an environmental variable PRODADIR
in every script that will
BEGIN {$ENV{PRODADIR} = '/home/progs/proda'; }
use Bio::Tools::Run::Alignment::Proda;
=head1 FEEDBACK
=head2 Mailing Lists
User feedback is an integral part of the evolution of this and other
Bioperl modules. Send your comments and suggestions preferably to one
of the Bioperl mailing lists. Your participation is much appreciated.
bioperl-l@bioperl.org - General discussion
http://bioperl.org/wiki/Mailing_lists - About the mailing lists
=head2 Support
Please direct usage questions or support issues to the mailing list:
I<bioperl-l@bioperl.org>
rather than to the module maintainer directly. Many experienced and
reponsive experts will be able look at the problem and quickly
address it. Please include a thorough description of the problem
with code and data examples if at all possible.
=head2 Reporting Bugs
Report bugs to the Bioperl bug tracking system to help us keep track
the bugs and their resolution. Bug reports can be submitted via the web:
http://redmine.open-bio.org/projects/bioperl/
=head1 AUTHOR - Albert Vilella
Email avilella-at-gmail-dot-com
=head1 APPENDIX
The rest of the documentation details each of the object
methods. Internal methods are usually preceded with a _
=cut
package Bio::Tools::Run::Alignment::Proda;
use vars qw($AUTOLOAD @ISA $PROGRAMNAME $PROGRAM %DEFAULTS
@PRODA_PARAMS @PRODA_SWITCHES @OTHER_SWITCHES
%OK_FIELD
);
use strict;
use Bio::Seq;
use Bio::SeqIO;
use Bio::SimpleAlign;
use Bio::AlignIO;
use Bio::Root::Root;
use Bio::Root::IO;
use Bio::Factory::ApplicationFactoryI;
use Bio::Tools::Run::WrapperBase;
@ISA = qw(Bio::Root::Root Bio::Tools::Run::WrapperBase
Bio::Factory::ApplicationFactoryI);
BEGIN {
%DEFAULTS = ( 'AFORMAT' => 'proda' );
@PRODA_PARAMS = qw (L);
@PRODA_SWITCHES = qw(POSTERIOR TRAN SILENT);
@OTHER_SWITCHES = qw();
# Authorize attribute fields
foreach my $attr ( @PRODA_PARAMS, @PRODA_SWITCHES, @OTHER_SWITCHES ) {
$OK_FIELD{$attr}++; }
}
=head2 program_name
Title : program_name
Usage : $factory->program_name()
Function: holds the program name
Returns: string
Args : None
=cut
sub program_name {
return 'proda';
}
=head2 program_dir
Title : program_dir
Usage : $factory->program_dir(@params)
Function: returns the program directory, obtained from ENV variable.
Returns: string
Args :
=cut
sub program_dir {
return Bio::Root::IO->catfile($ENV{PRODADIR}) if $ENV{PRODADIR};
}
=head2 new
Title : new
Usage : my $proda = Bio::Tools::Run::Alignment::Proda->new();
Function: Constructor
Returns : Bio::Tools::Run::Alignment::Proda
Args : -outfile_name => $outname
=cut
sub new{
my ($class,@args) = @_;
my $self = $class->SUPER::new(@args);
my ($on) = $self->SUPER::_rearrange([qw(OUTFILE_NAME)], @args);
$self->outfile_name($on || '');
my ($attr, $value);
$self->aformat($DEFAULTS{'AFORMAT'});
while ( @args) {
$attr = shift @args;
$value = shift @args;
next if( $attr =~ /^-/); # don't want named parameters
$self->$attr($value);
}
return $self;
}
sub AUTOLOAD {
my $self = shift;
my $attr = $AUTOLOAD;
$attr =~ s/.*:://;
$attr = uc $attr;
# aliasing
$self->throw("Unallowed parameter: $attr !") unless $OK_FIELD{$attr};
$self->{$attr} = shift if @_;
return $self->{$attr};
}
=head2 error_string
Title : error_string
Usage : $obj->error_string($newval)
Function: Where the output from the last analysus run is stored.
Returns : value of error_string
Args : newvalue (optional)
=cut
sub error_string{
my ($self,$value) = @_;
if( defined $value) {
$self->{'error_string'} = $value;
}
return $self->{'error_string'};
}
=head2 version
Title : version
Usage : exit if $prog->version() < 1.8
Function: Determine the version number of the program
Example :
Returns : float or undef
Args : none
=cut
sub version {
my ($self) = @_;
my $exe;
return undef unless $exe = $self->executable;
my $string = `$exe 2>&1` ;
#PRODA version 1.09 - align multiple protein sequences and print to standard output
$string =~ /ProDA\s+version\s+(\d+\.\d+)/m;
return $1 || undef;
}
=head2 run
Title : run
Usage : my $output = $application->run(\@seqs);
Function: Generic run of an application
Returns : Bio::SimpleAlign object
Args : Arrayref of Bio::PrimarySeqI objects or
a filename to run on
=cut
sub run {
my $self = shift;
return $self->align(shift);
}
=head2 align
Title : align
Usage :
$inputfilename = 't/data/cysprot.fa';
$aln = $factory->align($inputfilename);
or
$seq_array_ref = \@seq_array;
# @seq_array is array of Seq objs
$aln = $factory->align($seq_array_ref);
Function: Perform a multiple sequence alignment
Returns : Reference to a SimpleAlign object containing the
sequence alignment.
Args : Name of a file containing a set of unaligned fasta sequences
or else an array of references to Bio::Seq objects.
Throws an exception if argument is not either a string (eg a
filename) or a reference to an array of Bio::Seq objects. If
argument is string, throws exception if file corresponding to string
name can not be found. If argument is Bio::Seq array, throws
exception if less than two sequence objects are in array.
=cut
sub align {
my ($self,$input) = @_;
# Create input file pointer
$self->io->_io_cleanup();
my ($infilename) = $self->_setinput($input);
if (! $infilename) {
$self->throw("Bad input data or less than 2 sequences in $input !");
}
my $param_string = $self->_setparams();
# run proda
return &_run($self, $infilename, $param_string);
}
=head2 _run
Title : _run
Usage : Internal function, not to be called directly
Function: makes actual system call to proda program
Example :
Returns : nothing; proda output is written to a
temporary file OR specified output file
Args : Name of a file containing a set of unaligned fasta sequences
and hash of parameters to be passed to proda
=cut
sub _run {
my ($self,$infilename,$params) = @_;
my $commandstring = $self->executable." $infilename $params";
$self->debug( "proda command = $commandstring \n");
my $status = system($commandstring);
my $outfile = $self->outfile_name();
if( !-e $outfile || -z $outfile ) {
$self->warn( "Proda call crashed: $? [command $commandstring]\n");
return undef;
}
my $in = Bio::AlignIO->new('-file' => $outfile,
'-format' => $self->aformat,
);
my @alns;
while(my $aln = $in->next_aln) {
push @alns, $aln;
}
return @alns;
}
=head2 _setinput
Title : _setinput
Usage : Internal function, not to be called directly
Function: Create input file for proda program
Example :
Returns : name of file containing proda data input AND
Args : Arrayref of Seqs or input file name
=cut
sub _setinput {
my ($self,$input) = @_;
my ($infilename, $seq, $temp, $tfh);
if (! ref $input) {
# check that file exists or throw
$infilename = $input;
unless (-e $input) {return 0;}
# let's peek and guess
open(IN,$infilename) || $self->throw("Cannot open $infilename");
my $header;
while( defined ($header = <IN>) ) {
last if $header !~ /^\s+$/;
}
close(IN);
if ( $header !~ /^>\s*\S+/ ){
$self->throw("Need to provide a FASTA format file to proda!");
}
return ($infilename);
} elsif (ref($input) =~ /ARRAY/i ) { # $input may be an
# array of BioSeq objects...
# Open temporary file for both reading & writing of array
($tfh,$infilename) = $self->io->tempfile();
if( ! ref($input->[0]) ) {
$self->warn("passed an array ref which did not contain objects to _setinput");
return undef;
} elsif( $input->[0]->isa('Bio::PrimarySeqI') ) {
$temp = Bio::SeqIO->new('-fh' => $tfh,
'-format' => 'fasta');
my $ct = 1;
foreach $seq (@$input) {
return 0 unless ( ref($seq) &&
$seq->isa("Bio::PrimarySeqI") );
if( ! defined $seq->display_id ||
$seq->display_id =~ /^\s+$/) {
$seq->display_id( "Seq".$ct++);
}
$temp->write_seq($seq);
}
$temp->close();
undef $temp;
close($tfh);
$tfh = undef;
} else {
$self->warn( "got an array ref with 1st entry ".
$input->[0].
" and don't know what to do with it\n");
}
return ($infilename);
} else {
$self->warn("Got $input and don't know what to do with it\n");
}
return 0;
}
=head2 _setparams
Title : _setparams
Usage : Internal function, not to be called directly
Function: Create parameter inputs for proda program
Example :
Returns : parameter string to be passed to proda
during align or profile_align
Args : name of calling object
=cut
sub _setparams {
my ($self) = @_;
my ($attr, $value,$param_string);
$param_string = '';
my $laststr;
for $attr ( @PRODA_PARAMS ) {
$value = $self->$attr();
next unless (defined $value);
my $attr_key = lc $attr;
$attr_key = ' --'.$attr_key unless ($attr eq 'ANNOT');
$attr_key = ' -'.$attr_key if ($attr eq 'ANNOT');
$param_string .= $attr_key .' '.$value;
}
for $attr ( @PRODA_SWITCHES) {
$value = $self->$attr();
next unless ($value);
my $attr_key = lc $attr; #put switches in format expected by tcoffee
$attr_key = ' -'.$attr_key;
$param_string .= $attr_key ;
}
# Set default output file if no explicit output file selected
unless ($self->outfile_name ) {
my ($tfh, $outfile) = $self->io->tempfile(-dir=>$self->tempdir());
close($tfh);
undef $tfh;
$self->outfile_name($outfile);
}
#FIXME: This may be only for *nixes. Double check in other OSes
$param_string .= " > ".$self->outfile_name;
if ($self->verbose < 0) {
$param_string .= ' 2> /dev/null';
}
return $param_string;
}
=head2 aformat
Title : aformat
Usage : my $alignmentformat = $self->aformat();
Function: Get/Set alignment format
Returns : string
Args : string
=cut
sub aformat{
my $self = shift;
$self->{'_aformat'} = shift if @_;
return $self->{'_aformat'};
}
=head1 Bio::Tools::Run::BaseWrapper methods
=cut
=head2 no_param_checks
Title : no_param_checks
Usage : $obj->no_param_checks($newval)
Function: Boolean flag as to whether or not we should
trust the sanity checks for parameter values
Returns : value of no_param_checks
Args : newvalue (optional)
=cut
=head2 save_tempfiles
Title : save_tempfiles
Usage : $obj->save_tempfiles($newval)
Function:
Returns : value of save_tempfiles
Args : newvalue (optional)
=cut
=head2 outfile_name
Title : outfile_name
Usage : my $outfile = $proda->outfile_name();
Function: Get/Set the name of the output file for this run
(if you wanted to do something special)
Returns : string
Args : [optional] string to set value to
=cut
=head2 tempdir
Title : tempdir
Usage : my $tmpdir = $self->tempdir();
Function: Retrieve a temporary directory name (which is created)
Returns : string which is the name of the temporary directory
Args : none
=cut
=head2 cleanup
Title : cleanup
Usage : $proda->cleanup();
Function: Will cleanup the tempdir directory
Returns : none
Args : none
=cut
=head2 io
Title : io
Usage : $obj->io($newval)
Function: Gets a L<Bio::Root::IO> object
Returns : L<Bio::Root::IO>
Args : none
=cut
1; # Needed to keep compiler happy