Thanks a lot. :)
Johan


2014-06-04 0:49 GMT+09:00 Tiago de Paula Peixoto <tiago@skewed.de>:
On 06/01/2014 12:33 AM, jmazel wrote:
> Hi
> I am trying to extract communities of a graph with the
> graph_tool.community.minimize_blockmodel_dl function and by following the
> example on this page: http://graph-tool.skewed.de/static/doc/community.html.
> Unfortunately, I get an error:
>
> Traceback (most recent call last):
>   File "community.py", line 7, in <module>
>     graph_draw(g, pos=g.vp["pos"], vertex_fill_color=b, vertex_shape=b,
> output="output_blocks_mdl.pdf")
>   File "/usr/lib/python2.7/dist-packages/graph_tool/__init__.py", line 995,
> in __getitem__
>     val = self.get_func(self.g, key)
>   File "/usr/lib/python2.7/dist-packages/graph_tool/__init__.py", line 1458,
> in <lambda>
>     lambda g, k: g.__properties[("v", k)],
> KeyError: ('v', 'pos')
>
> Here is my code:
> from graph_tool.all import *
> g = load_graph("graph.dot")
> b, mdl = minimize_blockmodel_dl(g)
> graph_draw(g, pos=g.vp["pos"], vertex_fill_color=b, vertex_shape=b,
> output="output_blocks_mdl.pdf")

Your graph does not have a "pos" vertex property map, which is passed to
the graph_draw() function in the example above. You should just use:

    graph_draw(g, vertex_fill_color=b, vertex_shape=b,
               output="output_blocks_mdl.pdf")

Best,
Tiago

--
Tiago de Paula Peixoto <tiago@skewed.de>
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