Hi list, Using the lmList function from “nlme package” I get the following error message:
“Error in !unlist(lapply(sum.lst, is.null)) : invalid argument type” # this is the syntax used # fm_cream <-lmList(MULTDV~TIME|cod, data=zz, na.action=na.omit) # summary(fm_cream) When I generate a simple example the function works, but on the real data I get that message. I imagine that it is a common message when data is misused, but I don’t know where the problem could be. Has anyone encountered this message and what does it mean exactly? Is there a “guide” or something more detailed about the general error messages from different packages, somewhere? Thank you very much and have a great day ahead! Eugen Pircalabelu ______________________________________________ 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.
