[Bioperl-l] BioSVG [ Was ABI file parsing]

Malay boolda@yahoo.com
Thu, 2 May 2002 06:36:00 -0700 (PDT)

Hi Dr Stein:

> Since Bio::Graphics already works very nicely
> hand-in-hand with
> BioPerl annotation objects and there is a web-based
> browser and other
> application software based on it, could I suggest
> that you have a look
> at creating a format-independent graphics layer that
> can be used by
> Bio::Graphics and your code to draw on top of either
> GD or SVG at the
> switch of a software toggle?

Pastel is a format independent graphics layer that
just happens to generate SVG.

There is a quick way I can think of that can be done.
Replace all the GD call with Pastel call so that
Bio::Graphics generates SVG.

Here is the pseudocode

User file:

use Bio::Graphics::Chromatogram;
$ch =



In Bio::Graphics::Chromatogram:

use Pastel;
use GD;

sub draw{
  if $param =~ /SVG/i draw_svg();
  if $param =~ /PNG/i draw_png();

draw_svg {
  $g = Pastel::Graphics->new();

draw_png {
  $g = new GD...

What you do think?


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