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st: RE: Nested loops?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Nested loops?
Date   Tue, 21 Sep 2004 15:15:07 +0100

local varlist "v1 v2 v3 v4 v5 v6 v7 v8" 
tokenize "`varlist'" 
local nv : word count `varlist' 

forval j = 1/`nv' { 
	forval i = 2/`nv' { 
		if `i' > `j' gen ``i''_``j'' = ``i'' * ``j''
	}
} 

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

adiallo5@worldbank.org

> I would like to generate the following variables:
> 
> local myvars "v1 v2 v3 v4 v5 v6 v7 v8....etc..."
> 
> for var v2 v3 v4....:                          g X_v1 =  X*v1
> for var v3 v4 v5 v6...:                     g X_v2 =  X*v2
> for var v4 v5 v6 v7...                      g X_v3 =  X*v3
> etc.
> 
> How to do that, if I have a lot of variables involved?

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