There was discussion on the list about this kind
of problem in late 2006. One direct and one
indirect outcome of that are the program -countmatch- on SSC
(install using -ssc- as usual) and some discussion within
SJ-7-1 pr0029 . . . . . . . . . . . . . . . Speaking Stata: Making it count
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox
Q1/07 SJ 7(1):117--130 (no commands)
discusses count used with a loop over observations
or variables
Counting and identifying may not seem quite the same problem,
but in practice they are really close.
The help file for -countmatch- is rather detailed and discusses
how to tackle problems like this -- not just using -countmatch-.
Having worked out some simple tricks, I wanted to be able to remember what they were.
Nick
[email protected]
Dalhia
> I am trying to figure out a way to identify all
> observations in one variable that also appear in
> another variable. I have two variables - shareholder
> name and company name and I'm trying to find all the
> shareholders who are also on my list of companies. Is
> there a way to do this in Stata?
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