Re: [igraph] Modularity function on python version

[Tamas Nepusz]

Dear Simone,

Which igraph version are you using? This definitely works for me with  
0.5:

In [1]: g=igraph.Graph.Full(3)+igraph.Graph.Full(3)
In [2]: weights=[1,1,1,2,2,2]
In [3]: g.modularity([0,0,0,1,1,1], weights)
Out[3]: 0.44444444444444442
In [4]: print igraph.__version__
0.5

--
Tamas

On 2008.02.24., at 13:18, Simone Caschili wrote:

> Hello,
>
> I'm using modularity function on igraph  python version. I would get  
> a value of modularity for my graph g that is a weighted graph while  
> I would pass an a priori membership. Thus, in order to get what i  
> need, i have built a list  that represents my membership, it is like:
>
> memb=[0,0,0,0,1,1,1,1,1]
>
> I would just split my graph into two communities. Edge's weights are  
> also stored in a list like:
>
> weighs=[2,3,89,32,1,2,4]
>
> When I run my code I get this error:
>
> >Traceback (most recent call last):
> > File "1.py", line 120, in ?
> >    print g.modularity(memb,weights)
> >TypeError: modularity() takes exactly 2 arguments (3 given)
>
> Since I've tried to use only membership or weights, the code works  
> but it doesn't solve my issue because i need a "weighed" modularity  
> calculated on a certain membership.
>
> Could anyone help me?
> Thank you
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