Re: [igraph] Assortativity in igraph-6.0 under R

[Gábor Csárdi]

I think what you want to compare is

> assortativity(g1,degree(g1, mode="out")-1, degree(g1, mode="in")-1, 
> directed=TRUE)
[1] -0.3131201
> assortativity.degree(g1, directed=TRUE)
[1] -0.3131201

because this is how assortativity.degree() works if directed=TRUE.

Best,
Gabor

On Wed, May 19, 2010 at 4:36 PM, Przemek Grabowicz
<address@hidden> wrote:
> Thank you for implementing assortativity in igraph-0.6, it's nice addition.
>
> However there is something there what I don't understand.
> Assortativity.degree gives different results than assortativity itself. If I
> understand manual properly it should give the same values.
>
>> assortativity(g1,degree(g1)-1,directed=TRUE)
> [1] 0.1368699
>> assortativity.degree(g1,directed=TRUE)
> [1] 0.1546312
>
> It works fine when directed=FALSE. I'm using
> igraph_nightly_0.6-1899-20100505 under R-2.8.1 .
>
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-- 
Gabor Csardi <address@hidden>     UNIL DGM