Hello, As I am relatively new to the R environment this question may be either a) Really simple to answer b) Or I am overlooking something relatively simple.
I am trying to add a VarIdent structure to my gam model which is fitting smoothing functions to the time variables year and month for a particular species. When I try to add the varIdent weights to variable Month I get this error returned. Error in model.frame.default(formula = Chel ~ 1 + M + YM + M + YM, weights = Vf1, : variable lengths differ (found for '(weights)') Here is the simple code I am using. library(mgcv); library(lattice) library(nlme) Vf1=varIdent(form=~M) Chel2=gam(Chel~s(M, fx=F, bs="tp")+ s(YM, fx=F, bs="tp")+s(M,YM, fx=F, bs="tp"), family=poisson(link="log"), weights=Vf1) # second GAM with interaction M=Month YM=Year Regards, Niall -- View this message in context: http://r.789695.n4.nabble.com/varIdent-error-using-gam-function-in-mgcv-tp2260556p2260556.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
