Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I’m working with igraph for R. My graph is based on an edgelist which includes parallel edges (more than one edge with the same source and target). I would like to convert these parallel edges to an edge attribute weight. Is there an eay way to do this?
If there is no easy way. how can I identify these parallel edges?
duplicated(E(net))
does not return a single duplicate. I suppose its looking for duplicated edge ids.
You can also use
E(graph)$weight <- 1followed bysimplify(graph, edge.attr.comb=list(weight="sum"))to assign a weight of 1 to each edge and then collapsing multiple edges into single ones while summing the weights.