[igraph] An unconnected community was produced by LEV

[MATSUDA, Noriyuki]

Hello:

   I have applied leading.eigenvector.community() on a moderate size  
graph.  When I constructed subgraphs which corresponded to the  
maximum modularity, one subgraph was found to have two separate  
networks.  This seems to be incompatible with the general definition  
of a community: Internally dense connections with sparse external  
connections.  Or, what went wrong?
   I have placed three pertaining files at
      http://www.sk.tsukuba.ac.jp/~mazda/SOS/3a_help.R
      http://www.sk.tsukuba.ac.jp/~mazda/SOS/graph2.Rdata
      http://www.sk.tsukuba.ac.jp/~mazda/SOS/unconnectedCommunity.pdf

    I'd appreciate your quick rescue.