[Bioperl-l] Bio::Graphics heterogeneous_segments problem.

[Lincoln Stein]

OK, it's an interesting bug that effects all the segmented glyphs.  Ordinarily 
you won't see this because the subfeatures will extend to the ends of the 
parent feature.

I will try to find out why this happens when scaled by 10.

Lincoln

On Monday 03 February 2003 02:25 pm, Marco Aurelio Valtas Cunha wrote:
> Hi all,
>
>     If you work with bigger SeqFeatures the end graph is not rendered. If
> run this script (bellow) you'll get something like:
>
> ----XXXXXXXXXX------
>
> But when you mutiply the constants by ten, the graph render like:
>
> ----XXXXXXXXXX
>
> no end tail.
> PS: All GD, libgd and Bio::Graphics are up to date.
>
> Thanks Marco.
>
>
> use strict;
> use warnings;
> use Bio::Graphics;
> use Bio::SeqFeature::Generic;
>
> # Some test coord.
> use constant I_SIZE => 200;
> use constant E_START => 50;
> use constant E_END   => 150;
>
> my $intron = Bio::SeqFeature::Generic->new(
> 	   -primary => 'region_2',
> 	   -start   => '0',
> 	   -end     => I_SIZE,
> 	   -strand  => 1,
> 	   -source  => 'intron',
> );
>
> my $exon = Bio::SeqFeature::Generic->new(
> 	-primary => '',
> 	-start   => E_START,
> 	-end     => E_END,
> 	-source  => 'exon',
> );
> $intron->add_sub_SeqFeature($exon);
>
> my $graphics = Bio::Graphics::Panel->new(
> 	-segment => $intron,
> 	-width   => '200',
> );
>
> $graphics->add_track(
> 	heterogeneous_segments => $intron,
> 	-fgcolor    => 'black',
> 	-exon_color  => 'red',
> 	-height     => 8,
> );
>
> print $graphics->png;

-- 
========================================================================
Lincoln D. Stein                           Cold Spring Harbor Laboratory
lstein at cshl.org			                  Cold Spring Harbor, NY
========================================================================