David Hugh-Jones wrote: > Is this a bug? Should I attach a test case? Try setting verbose=TRUE in the call to gls first and see if that gives you any insight into what is happening.
> > D > > On 03/05/05, David Hugh-Jones <[EMAIL PROTECTED]> wrote: > >>I have a bunch of data which is structured by year and US state, so I >>have created a nlme groupedData object for it: >> >>formula(gd2) >>DEPVAR ~ YEAR | ABREV >> >>Now I am trying to run a gls regression on it. I want the error >>correlation structure to be AR1 with a different rho for each state, >>so I do >> >> >>>mdyn.1.1 = gls(model = DEPVAR ~ BLAH + BLAH, data=gd2, corr=corAR1(form= ~ >>>YEAR | ABREV),na.action=na.omit) >> >>YEAR and ABREV are always present; DEPVAR is absent for one state. >> >>I get the following error message: >> >>Error in logLik.glsStruct(glsSt, glsPars) : >> Deficient rank in gls_loglik >> >>Can anyone enlighten me? The error message goes away if I just do >>corAR1(form = ~1), but this is not meaningful for my data. >> >>Cheers >>David >> > > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
