> Could you please confirm if this change is intentional? Yes, this is intentional.
> I tried looking in the release notes but couldn’t find anything about this. > If this change is not intentional, I would like to debug what is going on > with my installation of the latest version. You would have had to go back all the way to version 0.6 to find the relevant entry: http://igraph.sourceforge.net/relnotes-0.6.html (See the "Numbering from 1 in R" section) If you have lots of old code that relied on vertices being indexed from zero and you do not have time to re-write them, you can install the "igraph0" package which uses zero-based indexing, but note that this is not going to be updated any more. All the best, Tamas _______________________________________________ igraph-help mailing list igraph-help@nongnu.org https://lists.nongnu.org/mailman/listinfo/igraph-help
