Is this a bug? Should I attach a test case? 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
