[bip] more software: pygr-draw

[Titus Brown]

Hi all,

I just polished up some recent changes I made to pygr-draw and posted
them.  pygr-draw is the simple (yet fast and scalable!) sequence
annotation drawing library I'm writing for a few different evil
purposes.  

As usual, I wrote up some doctest tutorials.  You can see a simple
example of drawing stuff here:

	http://darcs.idyll.org/~t/projects/pygr-draw/doc/simple-example.html

and a more complicated one (involving multi-component features like
genes+exons) here:

	http://darcs.idyll.org/~t/projects/pygr-draw/doc/group-example.html

The point of pygr-draw is not to necessarily make a general genome
browser ;), but rather to make it easy to display feature maps without
having to draw each pixel yourself.  It also uses pygr to do collision
detection on features, which may seem silly but is actually hard to
solve generally.

(pygr-draw should scale to full chromosome-size displays without much
trouble.)

You can download it here:

	http://darcs.idyll.org/~t/projects/pygr-draw-latest.tar.gz

If you like it, use it, modify it, and/or find bugs in it, please let me
know.

thanks,
--titus