Re: [igraph] motifs of size 4 tassonomy

[Simone Gabbriellini]

thanks a lot!

simo

Il giorno 24/gen/2011, alle ore 15.55, Tamas Nepusz ha scritto:

> THen just simply print the graphs, that should be enough to get an idea
> of how they look like:
> 
> for i in xrange(11):
>    print Graph.Isoclass(4, i)
> 
> -- 
> T.
> 
> On 01/24/2011 03:53 PM, Simone Gabbriellini wrote:
>> I got it, plotting is not available on my system!
>> 
>> I'll try to fix that. Thanks,
>> Simone
>> 
>> Il giorno 24/gen/2011, alle ore 15.30, Tamas Nepusz ha scritto:
>> 
>>> Hi Simone,
>>> 
>>> You're right, this is not documented properly. Item i in the result
>>> counts the number of motifs isomorphic to the graph with 4 vertices and
>>> isomorphy class i. There are 11 possible non-isomorphic undirected
>>> graphs of size 4, and these can be plotted as follows:
>>> 
>>> for i in xrange(11):
>>>   plot(Graph.Isoclass(4, i), "isoclass_%d.pdf" % i, bbox=(100, 100),
>>> layout="circle")
>>> 
>>> This snippet gives you 11 PDF files that show each of the isomorphy classes.
>>> 
>>> -- 
>>> Tamas
>>> 
>>> On 01/24/2011 03:24 PM, Simone Gabbriellini wrote:
>>>> Hello List,
>>>> 
>>>> I would like to calculate a value of transitivity for an *undirected* 
>>>> bipartite graph. I have to find the number of quadruplets of nodes with 
>>>> four links and  the number of quadruplets of nodes with at least three. I 
>>>> use motifs to extract the quadruplets census:
>>>> 
>>>> (Python)
>>>> trans = g.motifs_randesu(size=4)
>>>> 
>>>> but I cannot figure out the right classification for the census list. I 
>>>> guess the first value is the number of quadruplets with no links, but how 
>>>> exactly this classification goes on?
>>>> 
>>>> thanks for any help!
>>>> 
>>>> Best regards,
>>>> Simone
>>>> 
>>>> 
>>>> 
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