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age1
2004 Oct 11
0
lmList - strange problem
...lmList, which takes 'Data' partitioned according to the
levels of a grouping factor (gf) and individual 'lm' fits are obtained
for each 'data'partition, using a model defined as in "lm". So my call
to lmList looks something like:
> mg.lis <- lmList(strmbf ~ age1c + gender1 + sysbp.clinic +
+ diabp.clinic + ldl1 + mets.total + bmi1c | gf,
+ data = Data, subset= avblock=="normal");
but I get a strange error message:
"Error in model.frame.default(formula = form, data = dat, na.action =
na.action, : object is not a matrix...