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subsett
2012 Jan 17
2
An "unsubsettable object" in a mixed model
I am having problems using the /lme /command to fit mixed models. I have
a data set similar to longitudinal data, except the hypothesised
correlation is between observations taken from different individuals in
the same family rather than from the same individual at different times.
As soon as I try to specify any correlation structure other than
independent, I get the error message