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st: loop over variables using arch

From   Moo Hwan Kim <>
To   <>
Subject   st: loop over variables using arch
Date   Thu, 16 Apr 2009 15:40:59 -0400

Dear Statalisters
I would like to know what's wrong with the following message.
foreach x of varlist win1-win122{
      arch 'x' l.'x', arch(1)
' invalid name
I attempted to run arch model for each of rolling windows, which is 122.
Could you tell me what it goes wrong?
Any comments would be appreciated.
thanks a lot
moohwan kim
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