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

["Martin Weiss" <martin.weiss1@gmx.de>]

But note -help dates and times-

       "Historical note:  pseudofunctions ... tq(), and th() used to be 
called ... q(), and h().  Those names still work but are considered
       anachronisms."


HTH
Martin
_______________________
----- Original Message ----- 
From: "Brian P. Poi" <bpoi@stata.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Wednesday, December 03, 2008 11:52 PM
Subject: Re: st: Re: Running a foreach loop over a sequence of dates


> > ----- 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')
> > }
>
>  How about this:
>
>    forvalues t = `=q(1992q1)'/`=q(2000q4)' {
>       reg y L.y L.x if date >= q(1960q1) & date <= `t'
>       reg y L.y L.x if date >= `t'-20 & date <= `t'
>    }
>
>
>  where date is your quarterly date variable.
>
>    -- Brian Poi
>    -- bpoi@stata.com
>
> *
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