If you really need a function that creates an undirected *copy* of the graph, you can use as_undirected() instead of to_undirected():
g2 = g.as_undirected() -- T. On Saturday, 22 February 2014 at 07:20, Salvatore Palomino wrote: > Because the purpose of the function is to convert g into and undirected > graph. Also, when I use other functions that perform operations on graphs, > they always return the graph. Thus, its logical that it would return g and > not None. > > > > On Fri, Feb 21, 2014 at 5:15 PM, Gábor Csárdi <[email protected] > (mailto:[email protected])> wrote: > > On Fri, Feb 21, 2014 at 8:10 PM, Salvatore Palomino <[email protected] > > (mailto:[email protected])> wrote: > > > i think it should return g as an undirected graph. Instead it returns > > > "None" > > > > > > Why should it return the graph? > > > > Gabor > > > > > > > > > > > On Fri, Feb 21, 2014 at 4:07 PM, Gábor Csárdi <[email protected] > > > (mailto:[email protected])> wrote: > > > > On Fri, Feb 21, 2014 at 6:55 PM, Salvatore Palomino > > > > <[email protected] (mailto:[email protected])> wrote: > > > > > Hello! > > > > > > > > > > I am trying to convert my directed graph g into an undirected graph > > > > > using to_undirected(). > > > > > > > > > > << g = > > > > > GraphBase.Read_Pajek("C:/Users/Palomino/Downloads/109Senate-Rows.net > > > > > (http://109Senate-Rows.net)") > > > > > << g = g.to_undirected(False) > > > > > << print g > > > > > None > > > > > > > > > > I don't know why it returns None. Can you help me out? > > > > > > > > What should it return? The result of the conversion is in g, it does it > > > > in place. > > > > > > > > G. > > > > > > > > > > > > > > > > > > Thanks!!! > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > igraph-help mailing list > > > > > [email protected] (mailto:[email protected]) > > > > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > > > > > > > > > > > > > _______________________________________________ > > > > igraph-help mailing list > > > > [email protected] (mailto:[email protected]) > > > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > > > > > > > > > _______________________________________________ > > > igraph-help mailing list > > > [email protected] (mailto:[email protected]) > > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > > > > > _______________________________________________ > > igraph-help mailing list > > [email protected] (mailto:[email protected]) > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > _______________________________________________ > igraph-help mailing list > [email protected] (mailto:[email protected]) > https://lists.nongnu.org/mailman/listinfo/igraph-help _______________________________________________ igraph-help mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/igraph-help
