Re: [graphviz-interest] dot2texi cannot handle large graphs

Mohan Ganesalingam <[email protected]> Mon, 24 Feb 2014 16:12:23 +0000
Newsgroups gmane.comp.video.graphviz
Message-ID <[email protected]>
Thanks for the reply. Size isn't that much of an issue as I meant to 
print this at a0. I managed to get something by dumping out the formulae 
as images before using straight graphviz:

http://people.ds.cam.ac.uk/mg262/rad3_imaged_prism.png

I couldn't get twopi's normal radial layout algorithm to cope with that 
(out of memory error), so I was forced to use prism, giving a somewhat 
nastier result.

It is, as you say, pretty incomprehensible, but it illustrates 
combinatorial explosion reasonably well (which was one aim). Radial (and 
non-rasterised) would have been even better, but...!

best wishes,
Mohan

On 24.2.2014 14:57, Emden R. Gansner wrote:
>> 
>> Googling suggests that it's very hard to get TeX to deal with 
>> dimensions this large. But I feel like there must be some workaround 
>> to make dot2texi Graphviz scale down all the numbers, including the 
>> font sizes... I'd be very grateful for any advice. There are simple 
>> solutions to get the size of the drawing reduced, such as setting the 
>> size and fontsize attributes. This won't do you any good, because your 
>> graph is
> fairly dense and, more importantly, it's very bushy, There are 5 nodes
> on level 1, 28 nodes on level 2 and 135 nodes on level 3. You can
> stagger the edge lengths to help
> some, but you still have long edges crossing levels, adding to the
> width. The nodes can be compressed within each rank, and then the
> edges can be redrawn using the
> available space, but the resulting layout will probably be ugly. Even
> if you packed the last level as 13 rows of 10 nodes each, and used a
> small font size, that would still
> take a lot of room on a page.
> 
> For the record, I have attached a layout using staggered nodes. This
> was produced using
> 
>      dot graph.gv | gvpr -c -f unflatten | dot
> 
> where I've also attached the gvpr script unflatten.
> 
>    Emden
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