Re: [igraph] Assortativity measures

[Gábor Csárdi]

On Mon, Jan 6, 2014 at 11:47 AM, Merton Lister <address@hidden> wrote:

Hello,

I'm trying to make sense of the assortativity measures in igraph, specficially:

When every vertex in the graph has the same type, both assortativity and assortativity_nominal give `NaN`. I think this is because the algorithm assumes that there are different types of vertices by default.

Does it make sense to interpret this scenario as equivalent to the case where the assortativity equals to 1, as all the edges are between the same type of vertices?

Some clarification would be much appreciated. Thanks!

Hi, see the formulas in the manual. The PDF manual has nicer formulas, btw: 

http://igraph.sourceforge.net/doc/R/igraph.pdf

page 19.

Gabor

 

Best regards,

Merton 

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