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st: RE: combine data by groups
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: RE: combine data by groups
Date
Wed, 3 Mar 2010 21:05:20 +0100
<>
*******
clear*
inp str10 personid byte(parentsid momlive dadlive)
001 1 0 .
001 2 . 1
002 1 1 .
002 2 . 1
end
compress
list, noo
collapse (firstnm) momlive dadlive, by(personid)
list, noo
*******
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of G. Dai
Sent: Mittwoch, 3. März 2010 20:40
To: [email protected]
Subject: st: combine data by groups
hi all, this is an easy question,but somehow I can't figure it.
The data is like:
personid parentsid momlive dadlive
001 1 0
.
001 2 .
1
002 1 1
.
002 2 .
1
where personid and parentsid are person and her parents' id.
when parentid==1, we only record whether mom still live or not (momliv)
similarly
for parentid==2 and dadlive.
I want to change the data set to the following form
personid momlive dadlive
001 0 1
002 1 1
what is the best way to do this?
thanks,
Guang
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