Bio::SearchIO::Writer
HTMLResultWriter
Summary
Bio::SearchIO::Writer::HTMLResultWriter - Object to implement writing a Bio::Search::ResultI in HTML.
Package variables
No package variables defined.
Included modules
Inherit
Synopsis
use Bio::SearchIO;
use Bio::SearchIO::Writer::HTMLResultWriter;
my $in = new Bio::SearchIO(-format => 'blast',
-file => shift @ARGV);
my $writer = new Bio::SearchIO::Writer::HTMLResultWriter();
my $out = new Bio::SearchIO(-writer => $writer);
$out->write_result($in->next_result);
# to filter your output
my $MinLength = 100; # need a variable with scope outside the method
sub hsp_filter {
my $hsp = shift;
return 1 if $hsp->length('total') > $MinLength;
}
sub result_filter {
my $result = shift;
return $hsp->num_hits > 0;
}
my $writer = new Bio::SearchIO::Writer::HTMLResultWriter
(-filters => { 'HSP' => \&hsp_filter} );
my $out = new Bio::SearchIO(-writer => $writer);
$out->write_result($in->next_result);
# can also set the filter via the writer object
$writer->filter('RESULT', \&result_filter);
Description
This object implements the SearchWriterI interface which will produce
a set of HTML for a specific Bio::Search::Report::ReportI interface.
You can also provide the argument -filters => \%hash to filter the at
the hsp, hit, or result level. %hash is an associative array which
contains any or all of the keys (HSP, HIT, RESULT). The values
pointed to by these keys would be references to a subroutine which
expects to be passed an object - one of Bio::Search::HSP::HSPI,
Bio::Search::Hit::HitI, and Bio::Search::Result::ResultI respectively.
Each function needs to return a boolean value as to whether or not the
passed element should be included in the output report - true if it is to be included, false if it to be omitted.
For example to filter on sequences in the database which are too short
for your criteria you would do the following.
Define a hit filter method
sub hit_filter {
my $hit = shift;
return $hit->length > 100; # test if length of the hit sequence
# long enough
}
my $writer = new Bio::SearchIO::Writer::TextResultWriter(
-filters => { 'HIT' => \&hit_filter }
);
Another example would be to filter HSPs on percent identity, let's
only include HSPs which are 75% identical or better.
sub hsp_filter {
my $hsp = shift;
return $hsp->percent_identity > 75;
}
my $writer = new Bio::SearchIO::Writer::TextResultWriter(
-filters => { 'HSP' => \&hsp_filter }
);
See
Bio::SearchIO::SearchWriterI for more info on the filter method.
Methods
Methods description
Title : new
Usage : my $obj = new Bio::SearchIO::Writer::HTMLResultWriter();
Function: Builds a new Bio::SearchIO::Writer::HTMLResultWriter object
Returns : Bio::SearchIO::Writer::HTMLResultWriter
Args : -filters => hashref with any or all of the keys (HSP HIT RESULT)
which have values pointing to a subroutine reference
which will expect to get a |
Title : remote_database_url
Usage : $obj->remote_database_url($type,$newval)
Function: This should return or set a string that contains a %s which can be
filled in with sprintf.
Returns : value of remote_database_url
Args : $type - 'PROTEIN' or 'P' for protein URLS
'NUCLEOTIDE' or 'N' for nucleotide URLS
$value - new value to set [optional] |
Purpose : Produces data for each Search::Result::ResultI in a string.
: This is an abstract method. For some useful implementations,
: see ResultTableWriter.pm, HitTableWriter.pm,
: and HSPTableWriter.pm.
Usage : print $writer->to_string( $result_obj, @args );
Argument : $result_obj = A Bio::Search::Result::ResultI object
: @args = any additional arguments used by your implementation.
Returns : String containing data for each search Result or any of its
: sub-objects (Hits and HSPs).
Throws : n/a |
Title : hit_link_desc
Usage : $self->hit_link_desc(\&link_function);
Function: Get/Set the function which provides an HTML
link(s) for the given hit to be used
within the description section at the top of the BLAST report.
This allows a person reading the report within
a web browser to go to one or more database entries for
the given hit from the description section.
Returns : Function reference
Args : Function reference
See Also: default_hit_link_desc() |
Title : defaulthit_link_desc
Usage : $self->default_hit_link_desc($hit, $result)
Function: Provides an HTML link(s) for the given hit to be used
within the description section at the top of the BLAST report.
This allows a person reading the report within
a web browser to go to one or more database entries for
the given hit from the description section.
Returns : string containing HTML markup "See Also: hit_link_align, remote_database, id_parser |
Title : hit_link_align
Usage : $self->hit_link_align(\&link_function);
Function: Get/Set the function which provides an HTML link(s)
for the given hit to be used
within the HSP alignment section of the BLAST report.
This allows a person reading the report within
a web browser to go to one or more database entries for
the given hit from the alignment section.
Returns : string containing HTML markup "See Also: hit_link_desc, remote_database, id_parser |
Title : start_report
Usage : $index->start_report( CODE )
Function: Stores or returns the code to
write the start of the block, the block
and the start of the block of HTML. Useful
for (for instance) specifying alternative
HTML if you are embedding the output in
an HTML page which you have already started.
(For example a routine returning a null string).
Returns \&default_start_report (see below) if not
set.
Example : $index->start_report( \&my_start_report )
Returns : ref to CODE if called without arguments
Args : CODE |
Title : default_start_report
Usage : $self->default_start_report($result)
Function: The default method to call when starting a report.
Returns : sting
Args : First argument is a Bio::Search::Result::ResultI |
Title : title
Usage : $self->title($CODE)
Function: Stores or returns the code to provide HTML for the given
BLAST report that will appear at the top of the BLAST report
HTML output. Useful for (for instance) specifying
alternative routines to write your own titles.
Returns \&default_title (see below) if not
set.
Example : $index->title( \&my_title )
Returns : ref to CODE if called without arguments
Args : CODE |
Title : default_title
Usage : $self->default_title($result)
Function: Provides HTML for the given BLAST report that will appear
at the top of the BLAST report HTML output.
Returns : string containing HTML markup
The default implementation returns HTML
containing text such as:
"Bioperl Reformatted HTML of BLASTP Search Report
for gi|1786183|gb|AAC73113.1|"
Args : First argument is a Bio::Search::Result::ResultI |
Methods code
BEGIN { $DATE = localtime(time);
%RemoteURLDefault = ( 'PROTEIN' => 'http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=protein&cmd=search&term=%s',
'NUCLEOTIDE' => 'http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=nucleotide&cmd=search&term=%s'
);
$MaxDescLen = 60;
$AlignmentLineWidth = 60;} |
sub new
{ my($class,@args) = @_;
my $self = $class->SUPER::new(@args);
my ($p,$n,$filters) = $self->_rearrange([qw(PROTEIN_URL
NUCLEOTIDE_URL
FILTERS)],@args);
$self->remote_database_url('p',$p || $RemoteURLDefault{'PROTEIN'});
$self->remote_database_url('n',$n || $RemoteURLDefault{'NUCLEOTIDE'});
if( defined $filters ) {
if( !ref($filters) =~ /HASH/i ) {
$self->warn("Did not provide a hashref for the FILTERS option, ignoring.");
} else {
while( my ($type,$code) = each %{$filters} ) {
$self->filter($type,$code);
}
}
}
return $self;} |
sub remote_database_url
{ my ($self,$type,$value) = @_;
if( ! defined $type || $type !~ /^(P|N)/i ) {
$self->warn("Must provide a type (PROTEIN or NUCLEOTIDE)");
return '';
}
$type = uc $1;
if( defined $value) {
$self->{'remote_database_url'}->{$type} = $value;
}
return $self->{'remote_database_url'}->{$type};} |
sub to_string
{ my ($self,$result,$num) = @_;
$num ||= 0;
return unless defined $result;
my ($resultfilter,$hitfilter, $hspfilter) = ( $self->filter('RESULT'),
$self->filter('HIT'),
$self->filter('HSP') );
return '' if( defined $resultfilter && ! &{$resultfilter}($result) );
my ($qtype,$dbtype,$dbseqtype,$type);
my $alg = $result->algorithm;
if( $alg =~ /T(FAST|BLAST)([XY])/i ) {
$qtype = $dbtype = 'translated';
$dbseqtype = $type = 'PROTEIN';
} elsif( $alg =~ /T(FAST|BLAST)N/i ) {
$qtype = '';
$dbtype = 'translated';
$type = 'PROTEIN';
$dbseqtype = 'NUCLEOTIDE';
} elsif( $alg =~ /(FAST|BLAST)N/i ||
$alg =~ /(WABA|EXONERATE)/i ) {
$qtype = $dbtype = '';
$type = $dbseqtype = 'NUCLEOTIDE';
} elsif( $alg =~ /(FAST|BLAST)P/ || $alg =~ /SSEARCH/i ) {
$qtype = $dbtype = '';
$type = $dbseqtype = 'PROTEIN';
} elsif( $alg =~ /(FAST|BLAST)[XY]/i ) {
$qtype = 'translated';
$dbtype = 'PROTEIN';
$dbseqtype = $type = 'PROTEIN';
} else {
print STDERR "algorithm was ", $result->algorithm, " couldn't match\n";
}
my %baselens = ( 'Sbjct:' => ( $dbtype eq 'translated' ) ? 3 : 1,
'Query:' => ( $qtype eq 'translated' ) ? 3 : 1);
my $str;
if( ! defined $num || $num <= 1 ) {
$str = &{$self->start_report}($result);
}
$str .= &{$self->title}($result);
$str .= $result->algorithm_reference || $self->algorithm_reference($result);
$str .= &{$self->introduction}($result);
$str .= "<table border=0>
<tr><th>Sequences producing significant alignments:</th>
<th>Score<br>(bits)</th><th>E<br>value</th></tr>";
my $hspstr = '<p><p>';
if( $result->can('rewind')) {
$result->rewind(); }
while( my $hit = $result->next_hit ) {
next if( $hitfilter && ! &{$hitfilter}($hit) );
my $nm = $hit->name();
$self->debug( "no $nm for name (".$hit->description(). "\n")
unless $nm;
my ($gi,$acc) = &{$self->id_parser}($nm);
my $p = "%-$MaxDescLen". "s";
my $descsub;
if( length($hit->description) > ($MaxDescLen - 3) ) {
$descsub = sprintf($p,
substr($hit->description,0,$MaxDescLen-3) . "...");
} else {
$descsub = sprintf($p,$hit->description);
}
my $url_desc = &{$self->hit_link_desc()}($self,$hit, $result);
my $url_align = &{$self->hit_link_align()}($self,$hit, $result);
my @hsps = $hit->hsps;
$str .= sprintf('<tr><td>%s %s</td><td>%s</td><td><a href="#%s">%.2g</a></td></tr>'."\n",
$url_desc, $descsub,
($hit->raw_score ? $hit->raw_score :
(defined $hsps[0] ? $hsps[0]->score : ' ')),
$acc,
( $hit->significance ? $hit->significance :
(defined $hsps[0] ? $hsps[0]->evalue : ' '))
);
$hspstr .= "<a name=\"$acc\">\n".
sprintf("><b>%s</b> %s\n<dd>Length = %s</dd><p>\n\n", $url_align,
defined $hit->description ? $hit->description : '',
&_numwithcommas($hit->length));
my $ct = 0;
foreach my $hsp (@hsps ) {
next if( $hspfilter && ! &{$hspfilter}($hsp) );
$hspstr .= sprintf(" Score = %s bits (%s), Expect = %s",
$hsp->bits, $hsp->score, $hsp->evalue);
if( defined $hsp->pvalue ) {
$hspstr .= ", P = ".$hsp->pvalue;
}
$hspstr .= "<br>\n";
$hspstr .= sprintf(" Identities = %d/%d (%d%%)",
( $hsp->frac_identical('total') *
$hsp->length('total')),
$hsp->length('total'),
$hsp->frac_identical('total') * 100);
if( $type eq 'PROTEIN' ) {
$hspstr .= sprintf(", Positives = %d/%d (%d%%)",
( $hsp->frac_conserved('total') *
$hsp->length('total')),
$hsp->length('total'),
$hsp->frac_conserved('total') * 100);
}
if( $hsp->gaps ) {
$hspstr .= sprintf(", Gaps = %d/%d (%d%%)",
$hsp->gaps('total'),
$hsp->length('total'),
(100 * $hsp->gaps('total') / $hsp->length('total'))); }
my ($hframe,$qframe) = ( $hsp->hit->frame, $hsp->query->frame);
my ($hstrand,$qstrand) = ($hsp->hit->strand,$hsp->query->strand);
if( $hstrand || $qstrand ) {
$hspstr .= ", Frame = ";
my ($signq, $signh);
unless( $hstrand ) {
$hframe = undef;
} else {
$signh = $hstrand < 0 ? '-' : '+';
}
unless( $qstrand ) {
$qframe = undef;
} else {
$signq =$qstrand < 0 ? '-' : '+';
}
if( defined $hframe && ! defined $qframe) {
$hspstr .= "$signh".($hframe+1);
} elsif( defined $qframe && ! defined $hframe) {
$hspstr .= "$signq".($qframe+1);
} else {
$hspstr .= sprintf(" %s%d / %s%d",
$signq,$qframe+1,
$signh, $hframe+1);
}
}
$hspstr .= "</a><p>\n<pre>";
my @hspvals = ( {'name' => 'Query:',
'seq' => $hsp->query_string,
'start' => ($qstrand >= 0 ?
$hsp->query->start :
$hsp->query->end),
'end' => ($qstrand >= 0 ?
$hsp->query->end :
$hsp->query->start),
'index' => 0,
'direction' => $qstrand || 1
},
{ 'name' => ' 'x6,
'seq' => $hsp->homology_string,
'start' => undef,
'end' => undef,
'index' => 0,
'direction' => 1
},
{ 'name' => 'Sbjct:',
'seq' => $hsp->hit_string,
'start' => ($hstrand >= 0 ?
$hsp->hit->start :
$hsp->hit->end),
'end' => ($hstrand >= 0 ?
$hsp->hit->end :
$hsp->hit->start),
'index' => 0,
'direction' => $hstrand || 1
}
);
my ($numwidth) = sort { $b <=> $a }(length($hspvals[0]->{'start'}),
length($hspvals[0]->{'end'}),
length($hspvals[2]->{'start'}),
length($hspvals[2]->{'end'}));
my $count = 0;
while ( $count <= $hsp->length('total') ) {
foreach my $v ( @hspvals ) {
my $piece = substr($v->{'seq'}, $v->{'index'} + $count,
$AlignmentLineWidth);
my $cp = $piece;
my $plen = scalar ( $cp =~ tr/\-//);
my ($start,$end) = ('','');
if( defined $v->{'start'} ) {
$start = $v->{'start'};
my $d = $v->{'direction'} * ( $AlignmentLineWidth - $plen )*
$baselens{$v->{'name'}};
if( length($piece) < $AlignmentLineWidth ) {
$d = (length($piece) - $plen) * $v->{'direction'} *
$baselens{$v->{'name'}};
}
$end = $v->{'start'} + $d - $v->{'direction'};
$v->{'start'} += $d;
}
$hspstr .= sprintf("%s %-".$numwidth."s %s %s\n",
$v->{'name'},
$start,
$piece,
$end
);
}
$count += $AlignmentLineWidth;
$hspstr .= "\n\n";
}
$hspstr .= "</pre>\n";
}
}
$str .= "</table><p>\n".$hspstr."<p><p><hr><h2>Search Parameters</h2><table border=1><tr><th>Parameter</th><th>Value</th>\n";
foreach my $param ( $result->available_parameters ) {
$str .= "<tr><td>$param</td><td>". $result->get_parameter($param) ."</td></tr>\n";
}
$str .= "</table><p><h2>Search Statistics</h2><table border=1><tr><th>Statistic</th><th>Value</th></tr>\n";
foreach my $stat ( sort $result->available_statistics ) {
$str .= "<tr><td>$stat</td><td>". $result->get_statistic($stat). "</td></th>\n";
}
$str .= "</table><P>".$self->footer() . "<P>\n";
return $str;} |
sub hit_link_desc
{ my( $self, $code ) = @_;
if ($code) {
$self->{'_hit_link_desc'} = $code;
}
return $self->{'_hit_link_desc'} ||\& default_hit_link_desc;} |
sub default_hit_link_desc
{ my($self, $hit, $result) = @_;
my $type = ( $result->algorithm =~ /(P|X|Y)$/i ) ? 'PROTEIN' : 'NUCLEOTIDE';
my ($gi,$acc) = &{$self->id_parser}($hit->name);
my $url = length($self->remote_database_url($type)) > 0 ?
sprintf('<a href="%s">%s</a>',
sprintf($self->remote_database_url($type),$gi || $acc),
$hit->name()) : $hit->name();
return $url;} |
sub hit_link_align
{ my ($self,$code) = @_;
if ($code) {
$self->{'_hit_link_align'} = $code;
}
return $self->{'_hit_link_align'} ||\& default_hit_link_desc;} |
sub start_report
{ my( $self, $code ) = @_;
if ($code) {
$self->{'_start_report'} = $code;
}
return $self->{'_start_report'} ||\& default_start_report;} |
sub default_start_report
{ my ($result) = @_;
return sprintf(
qq{<HTML>
<HEAD> <CENTER><TITLE>Bioperl Reformatted HTML of %s output with Bioperl Bio::SearchIO system</TITLE></CENTER></HEAD>
<!------------------------------------------------------------------->
<!-- Generated by Bio::SearchIO::Writer::HTMLResultWriter -->
<!-- %s -->
<!-- http://bioperl.org -->
<!------------------------------------------------------------------->
<BODY BGCOLOR="WHITE">
},$result->algorithm,$Revision);} |
sub title
{ my( $self, $code ) = @_;
if ($code) {
$self->{'_title'} = $code;
}
return $self->{'_title'} ||\& default_title;} |
sub default_title
{ my ($result) = @_;
return sprintf(
qq{<CENTER><H1><a href="http://bioperl.org">Bioperl</a> Reformatted HTML of %s Search Report<br> for %s</H1></CENTER>},
$result->algorithm,
$result->query_name());
}
=head2 introduction
Title : introduction
Usage : $self->introduction($CODE)
Function: Stores or returns the code to provide HTML for the given
BLAST report detailing the query and the
database information.
Useful for (for instance) specifying
routines returning alternative introductions.
Returns\& default_introduction (see below) if not
set.
Example : $index->introduction(\& my_introduction )
Returns : ref to CODE if called without arguments
Args : CODE
=cut
sub introduction {
my( $self, $code ) = @_;
if ($code) {
$self->{'_introduction'} = $code;
}
return $self->{'_introduction'} ||\& default_introduction;
}
=head2 default_introduction
Title : default_introduction
Usage : $self->default_introduction($result)
Function: Outputs HTML to provide the query
and the database information
Returns : string containing HTML
Args : First argument is a Bio::Search::Result::ResultI
Second argument is string holding literature citation
=cut
sub default_introduction {
my ($result) = @_;
return sprintf(
qq{
<b>Query=</b> %s %s<br><dd>(%s letters)</dd>
<p>
<b>Database:</b> %s<br><dd>%s sequences; %s total letters<p></dd>
<p>
},
$result->query_name,
$result->query_description,
&_numwithcommas($result->query_length),
$result->database_name(),
&_numwithcommas($result->database_entries()),
&_numwithcommas($result->database_letters()),
);
}
=head2 end_report
Title : end_report
Usage : $self->end_report()
Function: The method to call when ending a report, this is
mostly for cleanup for formats which require you to
have something at the end of the document (</BODY></HTML>)
for HTML
Returns : string
Args : none
=cut
sub end_report {
return "</BODY>\n</HTML>\n";
}
=head2 id_parser
Title : id_parser
Usage : $index->id_parser( CODE )
Function: Stores or returns the code used by record_id to
parse the ID for record from a string. Useful
for (for instance) specifying a different
parser for different flavours of FASTA file.
Returns\& default_id_parser (see below) if not
set. If you supply your own id_parser
subroutine, then it should expect a fasta
description line. An entry will be added to
the index for each string in the list returned.
Example : $index->id_parser(\& my_id_parser )
Returns : ref to CODE if called without arguments
Args : CODE
=cut
sub id_parser {
my( $self, $code ) = @_;
if ($code) {
$self->{'_id_parser'} = $code;
}
return $self->{'_id_parser'} ||\& default_id_parser;
}
=head2 default_id_parser
Title : default_id_parser
Usage : $id = default_id_parser( $header )
Function: The default Fasta ID parser for Fasta.pm
Returns $1 from applying the regexp /^>\s*(\S+)/
to $header.
Returns : ID string
The default implementation checks for NCBI-style
identifiers in the given string ('gi|12345|AA54321').
For these IDs, it extracts the GI and accession and
returns a two-element list of strings (GI, acc).
Args : a fasta header line string
=cut
sub default_id_parser {
my ($string) = @_;
my ($gi,$acc);
if( $string =~ s/gi\|(\d+)\|?// )
{ $gi = $1; $acc = $1;}
if( $string =~ /(\w+)\|([A-Z\d\.\_]+)(\|[A-Z\d\_]+)?/ ) {
$acc = defined $2 ? $2 : $1;
} else {
$acc = $string;
$acc =~ s/^\s+(\S+)/$1/;
$acc =~ s/(\S+)\s+$/$1/;
}
return ($gi,$acc);
}
sub MIN { $a <=> $b ? $a : $b; }
sub MAX { $a <=> $b ? $b : $a; }
sub footer {
my ($self) = @_;
return "<hr><h5>Produced by Bioperl module ".ref($self)." on $DATE<br>Revision: $Revision</h5>\n"
}
=head2 algorithm_reference
Title : algorithm_reference
Usage : my $reference = $writer->algorithm_reference($result);
Function: Returns the appropriate Bibliographic reference for the
algorithm format being produced
Returns : String
Args : L<Bio::Search::Result::ResultI> to reference
=cut
sub algorithm_reference {
my ($self,$result) = @_;
return '' if( ! defined $result || !ref($result) ||
! $result->isa('Bio::Search::Result::ResultI')) ;
if( $result->algorithm =~ /BLAST/i ) {
my $res = $result->algorithm . ' ' . $result->algorithm_version . "<p>";
if( $result->algorithm_version =~ /WashU/i ) {
return $res .
"Copyright (C) 1996-2000 Washington University, Saint Louis, Missouri USA.<br>
All Rights Reserved.<p>
<b>Reference:</b> Gish, W. (1996-2000) <a href=\"http://blast.wustl.edu\">http://blast.wustl.edu</a><p>";
} else {
return $res .
"<b>Reference:</b> Altschul, Stephen F., Thomas L. Madden, Alejandro A. Schaffer,<br>
Jinghui Zhang, Zheng Zhang, Webb Miller, and David J. Lipman (1997),<br>\"
Gapped BLAST and PSI-BLAST: a new generation of protein database search<br>
programs\", Nucleic Acids Res. 25:3389-3402.<p>";
}
} elsif( $result->algorithm =~ /FAST/i ) {
return $result->algorithm . " " . $result->algorithm_version . "<br>" .
"\n<b>Reference:</b> Pearson et al, Genomics (1997) 46:24-36<p>";
} else {
return '';
}
}
sub _numwithcommas {
my $num = reverse( $_[0] );
$num =~ s/(\d{3})(?=\d)(?!\d*\.)/$1,/g;
return scalar reverse $num;
}
=head2 Methods Bio::SearchIO::SearchWriterI
L<Bio::SearchIO::SearchWriterI> inherited methods.
=head2 filter
Title : filter
Usage : $writer->filter('hsp',\& hsp_filter);
Function: Filter out either at HSP,Hit,or Result level
Returns : none
Args : string => data type,
CODE reference
=cut
1;} |
General documentation
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
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/
| AUTHOR - Jason Stajich | Top |
Email jason-at-bioperl-dot-org
The rest of the documentation details each of the object methods.
Internal methods are usually preceded with a _