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From: | xiao wu |
Subject: | Re: [igraph] as_clustering() error |
Date: | Thu, 6 Nov 2014 17:54:03 -0500 |
I am very sorry to bother you all again on this, as I tried but still couldn't figure out the exactly how to do this on my own. I added the code to the VertexDendrogram Object. What would be the code examples that I'd use this function? Right now I have: import igraph g = igraph.read('/home/xiao/Desktop/tag.NET',format="pajek") dendrogram = g.community_edge_betweenness() What's next to prevent as_clustering freaks out? > Date: Mon, 27 Oct 2014 09:01:23 +0100 > From: address@hidden > To: address@hidden > Subject: Re: [igraph] as_clustering() error > > Hello, > > This has been discussed on the list before; unfortunately > VertexDendrogram.as_clustering() freaks out if the dendrogram is not complete, > which may happen with certain graph clustering methods if your initial graph is > disconnected (because these methods won't try to merge the disconnected > components at the end). A temporary solution is to postprocess the dendrogram > a bit so it becomes complete; see this thread for more details: > > https://lists.nongnu.org/archive/html/igraph-help/2014-02/msg00067.html > > Best, > T. > > On 10/26, xiao wu wrote: > > I am new to igraph and use python igraph 0.6.5 in ubuntu python 2.7. I have > > my own pajek file I loaded into python, and ran community detection algorithm > > and got the following dendrogram > > > > >>> print(dendrogram)Dendrogram, 1335 elements, 314 merges > > But when I tried to run as_clusting, I got the following error: > > >>> clusters = dendrogram.as_clustering()Traceback (most recent call last): > > >>> File "<stdin>", line 1, in <module> File > > >>> "/usr/lib/python2.7/dist-packages/igraph/clustering.py", line 959, in > > >>> as_clustering num_elts - n)igraph._igraph.InternalError: Error at > > >>> community.c:767: `steps' to big or `merges' matrix too short, Invalid > > >>> value > > How do I debug from here? My pajek file's Vertices are not continuous. Would > > that create a problem? > > Thanks, > > Xiao > > > > > > > _______________________________________________ > > igraph-help mailing list > > address@hidden > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > -- > T. > > _______________________________________________ > igraph-help mailing list > address@hidden > https://lists.nongnu.org/mailman/listinfo/igraph-help |
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