Dear all, I am trying to get the model matrix out of a gee object, but that functionality does not seem to be there. Similarly with model.frame for gee objects... Or have I overlooked something? Best regards S??ren ============================================================================================= S??ren H??jsgaard, PhD, Head of Research Unit Phone: +45 8999 1703 Biometry Research Unit, Fax: +45 8999 1300 Danish Institute of Agricultural Sciences E-mail: sorenh at agrsci.dk Research Centre Foulum, DK-8830 Tjele, Denmark Homepage : http://www.jbs.agrsci.dk/~sorenh/ .... Time flies like an arrow, fruit flies like a banana ....