Thanks Tamas, exactly, Graph.TupleList() was the function I was looking for.
cheers, Johannes On Tue, Nov 27, 2018 at 1:22 PM Tamas Nepusz <nta...@gmail.com> wrote: > You can use Graph.TupleList() to construct a graph from named vertex > tuples. > > All the best, > T. > > On Mon, 26 Nov 2018 at 20:06, Johannes Radinger > <johannesradin...@gmail.com> wrote: > >> > >> How about replacing each barrier node V with two nodes VA and VB? > >> Assuming that edges point downstream, you can then rewire the head of > >> all incoming edges of V to VA and the tails of all outgoing edges of V > >> to VB, then place an edge from VA to VB if V is passable in the > >> downstream direction, or from VB to VA if it is passable in the > >> upstream direction. > >> > > Thanks Tamas, that sounds like a great idea. I'll test this ASAP. > However, I am just struggling with creating a graph from a list of named > vertex-pairs. So far I have always been using plain integer values starting > with 0 which represent my vertex IDs...but now since I want to replace each > barrier node V with two nodes VA and VB, I have created a list of named > node-pairs like edge_list = > [["v1","v2"],"v2","v3"],["v3","v4A"],["v4B","v5"],["v4A","v4B“]]. It seems > that the igraph R libarry has such a function ( > https://igraph.org/r/doc/graph_from_edgelist.html) that accepts a list of > names. However, is there a corresponding function in the python igraph > library? > > > > cheers, > > Johannes > > _______________________________________________ > > igraph-help mailing list > > igraph-help@nongnu.org > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > _______________________________________________ > igraph-help mailing list > igraph-help@nongnu.org > https://lists.nongnu.org/mailman/listinfo/igraph-help >
_______________________________________________ igraph-help mailing list igraph-help@nongnu.org https://lists.nongnu.org/mailman/listinfo/igraph-help
