Gavin Simpson wrote: > hits=-2.6 tests=BAYES_00 > X-USF-Spam-Flag: NO > > On Wed, 2008-01-16 at 11:02 +0100, Janice Kielbassa wrote: >> Hello! >> >> I want to do a non-linear regression with 2 explanatory variables >> (something like : length ~ a * time * exp( b* temperature)), having a >> data set (length, time, temperature). Which function could I use (I >> tried nls but I think it doesn't work) > > Janice, I'll start by saying I can't help you as I have never used nls() > myself and I am not familiar with this type of analysis. >
maybe it helps if you have a look at Chapter 10 "Nonlinear Models" by Douglas M. Bates and John M. Chambers in: John M. Chambers, Trevor J. Hastie (Eds.): Statistical Models in S. Chapman & Hall/CRC , 1992 Best, Roland ______________________________________________ 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.
