Hi, Graham, Thank you for sharing this. I encountered the same problem. My choice set was unbalanced because some alternatives were not available for some observations. If I forced the choice sets balanced, model estimation results would be biased. However, after including chid.var = "" and alt.var="" in the script, the model worked fined, with unbalanced choice set.
Gary On Mon, Apr 8, 2013 at 1:13 AM, Leask, Graham <g.le...@aston.ac.uk> wrote: > Dear Listmembers > > Thank you for your help in resolving the duplicate row.names error. The > solution was very straightforward to ensure that the choice set is > completely balanced. Once that was achieved the program worked fine. > > Kind Regards > > > Graham > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
