You can't. R^2 has no (consistent, sensible) meaning for nonlinear models. If you don't understand why not, get local help or do some reading.
Cheers, Bert On Wed, Mar 16, 2011 at 9:53 AM, Anna Gretschel <ana-...@web.de> wrote: > Dear List, > > how can I obtain the value of r suqared for a non-linear model? For > linear models it can be found in the summary() of the model but for > non-linear models I just don't know. Please help! > > Anna > > ______________________________________________ > 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. > -- Bert Gunter Genentech Nonclinical Biostatistics 467-7374 http://devo.gene.com/groups/devo/depts/ncb/home.shtml ______________________________________________ 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.
