On Thu, Nov 6, 2014 at 4:55 AM, Umberto Medicamento <umberto.medicame...@uniba.it> wrote: > Thanks Gabor, I tried graph.union in Igraph 0.7.1., setting byname="auto", > since the graphs have a "name" attribute. > > It keeps the edge weight and it generates: > > IGRAPH DN-- 99 638 -- > + attr: name (v/c), weight_1 (e/n), weight_2 (e/n) > > quoting the Igraph manual "If an attribute is present in multiple graphs and > would result a name clash, then this attribute is renamed by adding > suffixes: _1, _2, etc." > > What exactly does the function? How can I get a unique weight attribute in > my final graph?
Combine weight_1 and weight_2 as you wish. If they are always the same, just rename weight_1 to weight, and remove weight_2. > Also, if run graph.union setting byname=FALSE, the number of nodes in the > final graph changes. > > IGRAPH D--- 94 928 -- > + attr: name_1 (v/c), name_2 (v/c), weight_1 (e/n), weight_2 (e/n) > > Could you explain me, what does it mean? When byname is set FALSE, operation > is performed on symbolic vertex names instead of the internal numeric vertex > ids. Hence, I suppose I should aspect this different result, correct? I am not sure what you mean here, please show an example. Gabor [...] _______________________________________________ igraph-help mailing list igraph-help@nongnu.org https://lists.nongnu.org/mailman/listinfo/igraph-help
