You need to send us a complete example that reproduces a problem. Most probably you have isolate vertices, and from an edge list file format it is sometimes not possible to know how many isolates you have. Use another file format, like Pajek, that is almost the same as an edge list, but specified the number of vertices explicitly.
Gabor On Fri, May 3, 2013 at 9:12 AM, Laurens Rietveld <[email protected]>wrote: > I'm running igraph to do some experiments, and for some graphs I notice > the number of vertices in the analysis output table (e.g. the output > of evcent (graph, directed = FALSE)) is less than the vertices used as > input (edge list). > Because this only happens for some typical graphs (quite disconnected), > I'm assuming this occurs because there is no weight assigned to this > vertice (i.e. value zero). Is this true? Or is something else going wrong > here? > > Many thanks, > Laurens > > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > > -- Gabor Csardi <[email protected]> MTA KFKI RMKI
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