eugen pircalabelu <eugen_pircalabelu <at> yahoo.com> writes: > Using the lmList function from “nlme package” I get the following error >> message: > > “Error in !unlist(lapply(sum.lst, is.null)) : invalid argument type” >
try str(zz) to check if your data are strange. And plot the data, maybe there is something funny in the data set. Also try traceback() after the error occurred, this could give you a hint what's wrong. Dieter ______________________________________________ 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.