Not sure whether I fully grasp the question, but seems you should replace
the "&" for the "|" (or sign)...
gen time1= time if code==1 | code==2
See -h operator-
Regarding your last attempt:
You can only generate a variable once, every other editing has to be
effected via -replace-...
HTH
Martin
_______________________
----- Original Message -----
From: "Beatrice Crozza" <[email protected]>
To: <[email protected]>
Sent: Wednesday, October 15, 2008 12:38 AM
Subject: st: Merging obervations of two variables
Dear all,
maybe this is a simple question, but I don't know how to overcome my
problem.
I have a variable time and I should generate another variables equal
to time when another variable (code) is equal to 1 or 2.
However, I don't know how to instruct stata for this.
I tried with:
gen time1= time if code==1 & code==2
but of course I will have all missing values.
Thus, I created two variables:
gen time1= time if code==1
gen time1= time if code==2
but I would like to merge the values of the two variables at this point.
Any idea of how to do this?
Thank you.
Best,
Bea
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