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Re: st: Creating a variable with the highest value from two other variables


From   "Svend Juul" <SJ@SOCI.AU.DK>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Creating a variable with the highest value from two other variables
Date   Sat, 13 Oct 2007 09:55:41 +0200

Christer wrote
 
I have two income measures, X and Y. I want to create 
a variable, Z, that is equal to X for those obs where 
X>=Y and equal to Y for those obs where Y>X. Like this:
 
id X Y Z
1 12 11 12
2 10 10 10
3 10 12 12
 
Is there a simple way?
 
---------------------------------------------------
 
Yes:
 
   egen Z = rowmax(X Y)
 
Svend
 
________________________________________________________ 
 
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6 
DK-8000 Aarhus C,  Denmark 
Phone, work:  +45 8942 6090 
Phone, home:  +45 8693 7796 
Fax:          +45 8613 1580 
E-mail:       sj@soci.au.dk 
_________________________________________________________ 

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