If it did this, it would be (a) documented
and (b) evident from -return list- after
applying the command.
-codebook- is an r-class command, but the r-class
results issued are restricted to problem reports.
More positively, when you say "unique" values
I take it that you mean "distinct". Either way,
. search unique, faq
points to various ways of finding this out,
including dedicated programs. One that sticks
in my mind somehow is -distinct- from SSC by
Gary Longton and another. Also you could
do something like
. levelsof mpg, local(levels)
. di `: word count `levels''
Nick
[email protected]
Luhang Wang
> Does anyone know whether Stata stores the number of unique values
> after command -codebook- in any built in macro, just like r(mean) for
> mean after -sum-?
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