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st: Re: Running a foreach loop over a sequence of dates


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: Running a foreach loop over a sequence of dates
Date   Wed, 3 Dec 2008 22:05:23 +0100

You cannot simply abbreviate your list of end dates like a -numlist- with a slash and hope for Stata`s acquiescence... I would recommend you look at -h rolling-

HTH
Martin
_______________________
----- Original Message ----- From: "Augusto Cadenas" <aug.cadenas@googlemail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Wednesday, December 03, 2008 10:02 PM
Subject: st: Running a foreach loop over a sequence of dates


Hello,

I am trying to run a series of commands in a time series setting, and
interested in using variable time intervals (variable time windows, or
variable start/end dates). So ideally, I would like to loop with
-foreach- over a series of dates, but I cannot find the way of doing
this. To give you an idea of the kind of problem, here it is in
pseudo-code (not working):

*** begin pseudo-code

foreach t in 1992q1/2000q4 {
       reg y L.y L.x if tin(1960q1, `t')
       reg y L.y L.x if tin(`=`t'-20', `t')
}

*** end pseudo-code

I am sorry if this is a trivial question, but I really could not find
a way of performing this. Thanks for any hints.

AC
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