Re: [igraph] Selecting edges if a node is present

[Tamas Nepusz]

I presume this is a very simple question. If I have a directed network, how do I select edges that have a given node as sink?

Use incident(graph, vertex, mode="in") to get the indices of all the edges that terminate in a given node. Alternatively, you may use the [[ operator (see http://igraph.org/r/doc/sub-sub-.igraph.html):

graph[[, v, edges=TRUE]]

 

Further, how do I generate a subgraph comprised of all the edges that have a given node as sink?

Use subgraph.edges(); see: http://igraph.org/r/doc/subgraph.html

T.