Dear all,
Does anyone know why I get nothing with -return list- after
-codebook-? I did check the ado file of -codebook- and it is an rclass
command. It also seems a series of r() are well defined in the
program.
My purpose is to get the number of unique values of a variable stored
in a scalar or macro. Any suggestion of achieving this, maybe in other
ways, will be appreciated. Thanks a lot.
Best,
Luhang
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