Hi, We are trying to calculate ML-parameter estimates of a mixed effects models where the observations are weighted. The "weights" option in lmer() with RELM=FALSE seems attractive. Does anyone know the mechanism it uses to calculate weighted ML estimates? (Is there a paper?). Also, our model includes a serial correlation structure(e.g. AR(1)) among the residuals. As far as I know, no such "cor" option is available in lmer() unlike in nlme. Is this correct and if so, any suggestions on how to proceed?
thanks, Harlan Campbell McGill University [[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.