On Fri, 2011-02-04 at 12:31 +0000, Karen Moore wrote: > Hi, > <snip /> > My formula is > > GAM<-gam(Species richness (count) ~ Categorical + Continous + Continous + * > s*(Continous ) + Continous : Continous + Continous : Continous, > family=quasipoisson, data =)
Ok, I'm reasonably certain that that is *not* your gam() call. Why not post the *actual* code you would enter for your GAM model? dd <- dredge(GAM) should evaluate all possible models from the global model you specified. The example you quote is for a global model with both smooth and linear terms for the same variables, hence in dredge() they need to select models that include only the smooth for a particular variable or the linear term for that variable, but not both. By the looks of it, you don't have this problem. G > > Thanks for any advice on script > > > Karen > > [[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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ 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.
