[R] how to join these two models?
Dear R users, I have this 2 models that fit to my data: M3varI - update (M3, weights=varIdent(form= ~ 1|SITE)) M3AR1-update(M3,correlation=corAR1()) The first one, updates my M3 so that I can account for the variance structure of random erros. The second one, updates my M3 so that I can account for the correlation structure of random errors. How can I put them toghether in one final model? I have tryed it using gls but I could not do it. Could you please help me o this? Bets regards, Sara Maltez Mouro Centro de Ecologia Funcional Departamento de Botânica Universidade de Coimbra [EMAIL PROTECTED] www.uc.pt/ecology/saramaltezmouro [[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.
Re: [R] how to join these two models?
Sara Mouro wrote: I have this 2 models that fit to my data: M3varI - update (M3, weights=varIdent(form= ~ 1|SITE)) M3AR1-update(M3,correlation=corAR1()) How can I put them toghether in one final model? This looks like lme in package nlme, but it is pure guesswork, since your example is incomplete. Probably you should not use update, but something like lme(x~, random =., weights=varIdent..., correlation=corAR1()) but I am not sure if this somewhat overloaded fit will converge. Dieter -- View this message in context: http://www.nabble.com/how-to-join-these-two-models--tp20516771p20516980.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.
