[Chicago] Drawing DAG in networkx

Oren Livne livne at uchicago.edu
Thu May 31 22:35:03 CEST 2012

Unfortunately, networkx.pygraphviz_layout(graph) is also extremely slow. 
Why is a such small DAG taxing on those layout programs? One 
topologically-sort nodes and place them accordingly fairly quickly. Can 
I supply an initial guess (=guide) for node positions to the layout 
calls? Doesn't seem like it from the docs.


On 05/31/2012 02:04 PM, Joshua Herman wrote:
> Pygraphviz can output SVG 
> http://networkx.lanl.gov/pygraphviz/pygraphviz.pdf the thing I 
> suggested before.
> ---Profile:---
> http://www.google.com/profiles/zitterbewegung
> On Thu, May 31, 2012 at 1:55 PM, Brian Ray <brianhray at gmail.com 
> <mailto:brianhray at gmail.com>> wrote:
>     I am not sure about networkx. But I presume it is something that spits
>     out SVG no?
>     If your ok with pushing (blitting) pixels yourself,  I do know is that
>     matplotlib uses AGG http://www.antigrain.com/ for one drawing backend.
>     The author is probably still on this list and presents from time to
>     time.
>     Likewise, I believe you can go to Postscript or SVG with your own
>     tools and let whatever rendering that needs done to be done on case by
>     case basis.
>     --
>     Brian Ray
>     @brianray
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