Invisible a écrit :
> One small issue is that for the graphs I'm interested in, the ordering 
> of the edges is significant. That is,
> 
>   n25 -> n82
>   n25 -> n133
> 
> means something different to
> 
>   n25 -> n133
>   n25 -> n82
> 
> But dot will of course render them identically. I'm wondering if there's 
> a way to work round that. Maybe add some smaller nodes to label the 
> edges? (Presumably you can do that?)

Oh, you can even add labels to the edges directly withput having to add 
a node :-)

If edge order is important apparently adding ordering=out at the graph 
level will draw the outgoing edges of each node in the order they are 
encountered. Of course this will possibly create more edge 
interesections than necessary...

Anyway, I'm not saying that GraphViz can do absolutely anything you 
might need. But you should look into it deeper than just "it broke down 
the day I fed it an enormous graph with all the options at their default 
value" :-D And the documentation seems good enough...

I wonder what your own tool would do with the graphs you tested dot on 
originally, by the way ;-)

-- 
Vincent

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