Subset igraph graph by label

Question

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 modif

Answer 1

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: http://sna.stanford.edu/rlabs.php