--- Sergiy Radyakin wrote:
> var1 var2
> 1 .
> 2 .
>3 .
> . 1
>. 2
> . 3
>
> gen var3=.
> replace var3=var1 if var1!=.
> replace var3=var2 if var2!=.
Good idea, and it work in your example, however Stata knows
multiple types of missing data (. .a .b .c ...), see
-help missing-. So it might be safer to use:
replace var3=var1 if var1<.
replace var3=var2 if var2<.
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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