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Generate GD images of biological sequences and annotations
Home Page: http://search.cpan.org/dist/Bio-Graphics
This project forked from gmod/bio-graphics
Generate GD images of biological sequences and annotations
Home Page: http://search.cpan.org/dist/Bio-Graphics
Bio::Graphics - Generate GD images of Bio::Seq objects SYNOPSIS This is a simple GD-based renderer (diagram drawer) for DNA and protein sequences. It is used from Perl like this: use Bio::Graphics; use Bio::DB::BioFetch; # or some other Bio::SeqI generator # get a Bio::SeqI object somehow my $bf = Bio::DB::BioFetch->new; my $cosmid = $bf->get_Seq_by_id('CEF58D5'); my @features = $cosmid->all_SeqFeatures; my @CDS = grep {$_->primary_tag eq 'CDS'} @features; my @gene = grep {$_->primary_tag eq 'gene'} @features; my @tRNAs = grep {$_->primary_tag eq 'tRNA'} @features; # let the drawing begin... my $panel = Bio::Graphics::Panel->new( -segment => $cosmid, -width => 800 ); $panel->add_track(arrow => $cosmid, -bump => 0, -double=>1, -tick => 2); $panel->add_track(transcript => \@gene, -bgcolor => 'blue', -fgcolor => 'black', -key => 'Genes', -bump => +1, -height => 10, -label => 1, -description=> 1 ) ; $panel->add_track(transcript2 => \@CDS, -bgcolor => 'cyan', -fgcolor => 'black', -key => 'CDS', -bump => +1, -height => 10, -label => 1, -description=> 1, ); $panel->add_track(generic => \@tRNAs, -bgcolor => 'red', -fgcolor => 'black', -key => 'tRNAs', -bump => +1, -height => 8, -label => 1, ); my $gd = $panel->gd; print $gd->can('png') ? $gd->png : $gd->gif; DESCRIPTION The Bio::Graphics::Panel class provides drawing and formatting services for any object that implements the Bio::SeqFeatureI interface, including Ace::Sequence::Feature, Das::Segment::Feature and Bio::DB::Graphics objects. It can be used to draw sequence annotations, physical (contig) maps, protein domains, or any other type of map in which a set of discrete ranges need to be laid out on the number line. The module supports a drawing style in which each type of feature occupies a discrete "track" that spans the width of the display. Each track will have its own distinctive "glyph", a configurable graphical representation of the feature. The module also supports a more flexible style in which several different feature types and their associated glyphs can occupy the same track. The choice of glyph is under run-time control. Semantic zooming (for instance, changing the type of glyph depending on the density of features) is supported by a callback system for configuration variables. The module has built-in support for Bio::Das stylesheets, and stylesheet-driven configuration can be intermixed with semantic zooming, if desired. You can add a key to the generated image using either of two key styles. One style places the key captions at the top of each track. The other style generates a graphical key at the bottom of the image. Note that this modules depends on Bio::Perl, GD and the Text::Parsewords module. A good tutorial on this module can be found at http://www.bioperl.org/wiki/HOWTO:Graphics. BUILDING AND INSTALLING From the directory in which this README file is located: % perl ./Build.PL % ./Build test % ./Build install The last step may need to be run as root. You can test whether the module is working by running the testit.pl script located in the eg subdirectory. It produces a PNG file, so you should pipe the output to an image displayer, such as xv: eg/testit.pl | xv - THE FEATURE_DRAW.PL SCRIPT This module contains a simple script named "feature_draw.pl" that takes a file of annotations and generates an image. When first built, the script lives in the "scripts" subdirectory. After installation, the script will be moved into your system-wide scripts directory (usually /usr/bin or something similar). There is a sample features file in the "eg" subdirectory. After building, but before installation, you can run the following command from the directory in which this README file is located: % scripts/feature_draw.pl eg/feature_data.txt | display - This is piping the output directly to the "display" program, part of the ImageMagick package. Replace with your favorite PNG-capable display program. After installation, feature_draw.pl will be available on your command path. Run "man feature_draw.pl" to see the manual page, or use the -h option to get a quick summary of usage. THE GENERIC GENOME BROWSER The gbrowse script, part of the Generic Genome Browser package, has been moved into its own package. It creates a high-performance web-based genome browser based on the Bio::Graphics package. You can get it by anonymous CVS to SourceForge: cvs -d:pserver:[email protected]:/cvsroot/gmod \ co Generic-Genome-Browser Lincoln Stein <[email protected]> 12 December 2008
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