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


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Creating a variable with the highest value from two other variables
Date   Sun, 14 Oct 2007 20:46:14 +0100

gen Z = max(X, Y) 

is even simpler. 

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

Svend Juul
 
> 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)
>  

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