[R] NLME: Problem with plotting ranef vs a factor

Dirk Enzmann dirk.enzmann at uni-hamburg.de
Thu Aug 3 13:24:52 CEST 2006


be careful using attach() and detach(). From the syntax snippets you 
showed it seems that you did create an object "pcat" ("factor 
variable"), but you did not change the respective "variable" in your 
data frame.

Try to remove "pcat" and see what happens do the results of lme()!


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