Subset igraph graph by label
igraph, r
Solution
how about:
gfam <- subgraph.edges(graph=g, eids=which(E(g)$label=="FAM"), delete.vertices = TRUE)
gbf <- subgraph.edges(graph=g, eids=which(E(g)$label=="BF"), delete.vertices = TRUE)
Suggestion for igraph/network analysis tutorial/shameless plug:
https://solomonmg.github.io/post/working-with-bipartite-affiliation-network-data-in-r/
Stanford Network Analysis in R lab: https://www.stat.cmu.edu/~brian/780/stanford%20social%20network%20labs/
Problem
I am trying to subset a igraph graph by an edge characteristics (like its label). In the reproducible example I have shamelessly stolen from another post with a little modification, I would like to be able to separate the Best Friend ties (BF) from the Family ties (FAM): ``` edges <- matrix(c(103, 86, 24, 103, 103, 2, 92, 103, 87, 103, 103, 101, 103, 44), ncol=2, byrow=T) g <- graph(as.vector(t(edges))) E(g)[c(2:4,7)]$label<-"FAM" E(g)[c(1,5,6)]$label<-"BF" ``` The best I can do so far is display the edges which have one type of tie: ``` E(g)[E(g)$label=="BF"] V(g)[E(g)$label=="BF"] ```