Not the point, I think.
-tabulate, missing- indeed counts values present in the data but missing.
-count- is needed to detect the fact that something is not even present in the data.
In the auto data,
. tabulate rep78
. tabulate rep78, miss
give different results as the second but not the first counts missings too.
. count if mpg == .
0
makes explicit the fact that no observations contain missing values for -mpg-.
Nick
[email protected]
Roy Wada
>For example, I would like to obtain the frequency for a variable of a
>number that, perhaps, there aren�t any observation. ( I can�t achieve
>it with tabulate, because it returns only the existing frequencies).
>Are there any function to make this?
The =miss= option of -tabulate- will keep track of missing frequencies.
Please read the help file.
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