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Re: [igraph] R igraph: vertex IDs starting at 1 now?
From: |
Tamás Nepusz |
Subject: |
Re: [igraph] R igraph: vertex IDs starting at 1 now? |
Date: |
Fri, 21 Jun 2013 21:44:27 +0200 |
> 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