[R] question on lmList
eugen_pircalabelu at yahoo.com
Mon Oct 6 16:39:42 CEST 2008
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)
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!
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