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Re: [igraph] Question about assortativity

From: Gábor Csárdi
Subject: Re: [igraph] Question about assortativity
Date: Thu, 31 Mar 2011 14:06:49 -0400


igraph only works with discrete values, if you have continuous values,
then you can discretize them.


On Wed, Mar 30, 2011 at 5:36 PM, Marcel Salathé
<address@hidden> wrote:
> Hi
> I've got a question about assortativity based on continuous values assigned 
> to vertices (i.e. the assortativity function).
> I'm curious how vertices are assumed to be of the same value if values are 
> continuous. I couldn't find anything in the documentation. Looking up 
> Newman's paper (Mixing patterns in networks, p.5) I found the following "By 
> analogy with the developments of Section II, we can define a quantity exy, 
> which is the fraction of all edges in the network that join together vertices 
> with values x and y for the age or other scalar variable of interest. The 
> values x and y might be either discrete in nature (e.g., integers, such as 
> age to the nearest year) or continuous (exact age), making exy either a 
> matrix or a function of two continuous variables. Here, for simplicity, we 
> concentrate on the discrete case, but generalization to the continuous case 
> is straightforward."
> What function is igraph using to determine if two continuous values are of 
> the same "type"?
> Thanks for clarification
> Marcel
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Gabor Csardi <address@hidden>     MTA KFKI RMKI

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