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RE: st: does stata create an index that can be used in loops?


From   "Brent Fulton" <fultonb@berkeley.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: does stata create an index that can be used in loops?
Date   Thu, 8 Feb 2007 07:09:02 -0800

Thanks for your suggestion, Maarten, which works in my specific case. I am
also looking for a more general solution, which I just posted.

-Brent
 

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten buis
Sent: Thursday, February 08, 2007 12:03 AM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: does stata create an index that can be used in loops?

--- Brent Fulton <fultonb@berkeley.edu> wrote:
> I would like the following variables to be created:
> var1_county, var2_county, var3_county
> 
> I did the following:
> 
> local a "var1 var2 var3"
> foreach x of local a{
> local b "`b' `x'"
> }
> *the loop above results in the following: local b "var1_zip var2_zip 
> var3_zip"

I assume that the line:
local b "`b' `x'"
actually read:
local b "`b' `x'_zip"

> 
> sort county
> foreach x of local b{
> by county: egen `x'_county=total(`x')
> }


I would do this in one loop:
sort county
forvalues i = 1/3 {
    by county: egen var`i'_county = total(var`i'zip) }


-----------------------------------------
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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