assortativity_degree igraph

Usage
1

Hi,

Please I would like some help.
Could you explain me or indicate an example of how function assortativity_degree() compute the assortativity for directed graphs? In this cases ( graphs are directed) what kind node connections are been considered ( ‘in’ to node / ‘out’ from node )? Is there a correct way use the function in R? I could not found examples for directed graphs.

Tks.

Marcelo

2

Take each u \rightarrow v directed edge, and write down the out-degree d^\text{out}_u in a first column and in-degree d^\text{in}_v in a second. Then compute the Pearson correlation of the two columns you got. This is the directed degree assortativity.

For more details, see igraph Reference Manual and the references within.

3

Thank you very much!!!