Hi Nicolas,
On Tue, Sep 29, 2009 at 1:05 PM, Nicolas M. Thiery
<nicolas.thi...@u-psud.fr> wrote:
> Hi Kjell,
>
> On Tue, Sep 29, 2009 at 09:36:57AM +0200, Kjell Magne Fauske wrote:
>> >> import dot2tex
>> >> texcode = dot2tex.dot2tex(testgraph, debug=True)
>
> Speaking of this: I have another use case for which is not (yet!)
> covered by the new shiny interface, namely calling dot2tex only to
> extract out the node layout information, as a dictionary of the form {
> node_name : [x,y] }. Here is how I currently cheat around:
>
> from dot2tex.dot2tex import DotConvBase
>
> class TrivialDotConv(DotConvBase):
> def do_nodes(self):
> pass
>
> def do_edges(self):
> pass
>
> conv = (TrivialDotConv({}))
> conv.convert(dotdata)
>
> return dict( (node.name, map(int, node.attr['pos'].split(','))) for
> node in conv.nodes )
>
> Would you consider adding this feature to the shiny interface, so that
> one could do something like:
>
> > dotdata = r"""
> digraph {
> "a" [label=" ", texlbl="$1$"];
> "b" [label=" ", texlbl="$2$"];
> "c" [label=" ", texlbl="$3$"];
> a -> c
> b -> c
> }
> """
> > dot2tex.dot2tex(dotdata, format = "positions")
>
> {'a': [8, 66], 'b': [42, 66], 'c': [25, 10]}
>
Adding such a feature is of course possible. I'll see what I can do.
Just curious. What do you want to use the positioning information for?
As I mentioned in an earlier post, the dot2tex's graph data structure
is very simple. If you want to manipulate DOT graphs in a more robust
way I recommend taking a look at NetworkX and PyGraphviz:
http://networkx.lanl.gov/
http://networkx.lanl.gov/pygraphviz/
>
> Oh, and a last point: in order to include a test-suite in the upcoming
> dot2tex sage package, I tried running the test-script, and got some
> errors/warnings. Am I doing something wrong?
>
> I did:
>
> ... install pyparsing
>
> zephyr>cd /tmp/dot2tex-2.8.6
> zephyr>sudo python setup.py install
> zephyr>cd tests
> zephyr>python test_multirender.py
The problem here is probably that the tool pdftk is not installed on
your system. I use it to combine several PDF into one file.
> zephyr>python test_buildexamples.py
I will investigate this and see if all the examples are built
correctly on my system.
- Kjell Magne Fausk
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sage-combinat-devel" group.
To post to this group, send email to sage-combinat-devel@googlegroups.com
To unsubscribe from this group, send email to
sage-combinat-devel+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/sage-combinat-devel?hl=en
-~----------~----~----~----~------~----~------~--~---
