st: RE: combining data on same case from different lines

["Nick Cox" <n.j.cox@durham.ac.uk>]

I don't understand the difference. But this FAQ may be useful: 

How can I replace missing values with previous or following nonmissing values or within sequences?

http://www.stata.com/support/faqs/data/missing.html

And -- here explicitly checking that observations occur in pairs -- 

bysort id : replace myvar = myvar[3-_n] if missing(myvar) & _N == 2 

will replace a missing value of -myvar- with its pair within blocks of -id-. 

Nick 
n.j.cox@durham.ac.uk 


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Marcelo Jenny
Sent: 25 June 2010 14:25
To: statalist@hsphsun2.harvard.edu
Subject: st: combining data on same case from different lines

Hello Nick,

thanks for the reply. It's not that easy :)

The table got bungled in the last email:
id date      stage      publication
1  01oct1990 indictment
1            indictment journal 3
2  10may1995 indictment
2            indictment journal 5

I want to arrive at a table with complete data on all variables for all
cases. This means either the data in the variable 'publication' in the 
second
line of case 1 needs to be copied into the first line or the data in the
variable 'date' needs to be copied into the second line.

Afterwards I can drop the now unnessary second line for each case in
the way you suggested.

Marcelo

-- 
Dr. Marcelo Jenny
Universität Wien
Institut für Staatswissenschaft/AUTNES
Hohenstaufengasse 9/7/4. Stock
A-1010 Wien
Tel.:++43-1-4277-49706
E-Mail: marcelo.jenny@univie.ac.at
http://staatswissenschaft.univie.ac.at/

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