Hi Bianca I have exactly the same problem! I see you posted this almost a year ago and didn't get any response.... Could you figure out what the problem was in the end? I am running a PGLS model with categorical factors. In one model the factor has two levels and the anova function works fine. In other I have more than two levels and it gives me the same problem you described below. The summary function works but the output breaks p-values down per level, and you don't get a p-value for the factor as a whole..
Any suggestions?. On Wednesday, February 6, 2013 12:09:31 PM UTC+2, Bianca A Santini wrote: > > Hi there, > > > > > I am using the function pgls in the CAPER package, everything seems to > run > > fine except for one of my variables. > > When using this variable as continuous the anova works without problem, > > but if using the same variable as factor (in fact, this is what it is), > the > > program returns this answer: > > > > Error in terms.formula(formula, data = data) : > > invalid model formula in ExtractVars > > > > > > any ideas on what might be the problem? > > > > Cheers! > > > > > > > > -- > > BAS > > > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > r-h...@r-project.org <javascript:> 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. >
______________________________________________ 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.
