Dear R users, Is there a way to do non-linear multivariate regression in R? Ideally, I would like to have a model like cbind(m,n,o)~a+b*x But I don?t know if functions like nls() or gls() accept multiple response variales. Many thanks for your help! Best wishes Christoph (using R 2.7.0 on Windows XP) -- Dr. rer.nat. Christoph Scherber University of Goettingen DNPW, Agroecology Waldweg 26 D-37073 Goettingen Germany phone +49 (0)551 39 8807 fax +49 (0)551 39 8806 Homepage http://www.gwdg.de/~cscherb1