Thanks for the fast answer and the code, it really helped. El 6 oct. 2016 11:16, "Tamas Nepusz" <[email protected]> escribió:
> Hello! > > Unfortunately the Python interface is currently lacking such a > function, but you can work around this if the graphs involved have the > same number of vertices. Basically, what you need to do is to use the > permute_vertices() method on one of your graphs and permute its > vertices such that the IDs will be in the same order as in the > original graph, then use union(). If the ID sets of the two graphs are > different (i.e. only partially overlapping), then it is a bit more > complicated because first you need to extend both graphs with isolated > vertices corresponding to the "missing" IDs so they have the same ID > set, and then call permute_vertices() on one of them, and then finally > call union(). > > Attached is a Python script containing a union_by_attr() function that > does what you probably need. It is incomplete because it does not copy > any other attributes from the original graphs to the union (i.e. > attributes are lost because union() does not support attribute > unification yet). Copying the vertex attributes should be > straightforward, though. > > T. > > > On Thu, Oct 6, 2016 at 9:32 AM, Kuu <[email protected]> wrote: > > Hello! > > > > I have two graphs and each of them have vertices with the "id" attribute. > > > > I want to merge both of them by this attribute but I cannot find a method > > for doing so (I'm on Python btw). I saw union and compose methods, but > they > > seem to join vertices by index, I'm not sure about this as it is not > > explained in the docs, but my tests seem to point that. > > > > So my questions: how do compose/union methods work? Is there a way of > doing > > the merge by id/name attribute instead of the vertex index? > > > > Thank you > > > > Regards, > > Javier > > > > > > _______________________________________________ > > igraph-help mailing list > > [email protected] > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > >
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