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RE: st: AW: Keeping variable After restore
In the code you have below, the "if" has to be before the comma:
factor wbq91-wbq93 if year == 2005, factors(1)
Best,
Doug
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of C.T. Shehzad
Sent: Monday, November 09, 2009 10:04 AM
To: [email protected]
Subject: Re: st: AW: Keeping variable After restore
Dear Martin:
Thanks for your reply. However, stata says "option if not allowed". It
has happened before as well that conditionals do not work as option.
factor wbq91-wbq93, factors(1) if year == 2005
option if not allowed
r(198)
Thanks again and best regards,
Tanveer
Martin Weiss wrote:
> <>
>
> Instead of -keep-ing the year 2000:
>
> ***
> webuse bg2, clear
> gen year=2000*(_n<200)+ /*
> */ 2001*(_n>=200)
> qui factor bg2cost1-bg2cost6 /*
> */ if year==2000
> predict var1
> ***
>
> and off you go...
>
>
>
> HTH
> Martin
>
>
> -----Ursprüngliche Nachricht-----
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von C.T. Shehzad
> Gesendet: Montag, 9. November 2009 15:22
> An: [email protected]
> Betreff: st: Keeping variable After restore
>
> Dear Stata-listers:
>
> I want to generate a variable during (preserve - restore) and want to
> use that after restoring the data. When I will restore data the variable
> will be dropped automatically. How can I keep the variable?
>
> The data is time series and a simple version of my program is as follows:
>
> preserve
> keep if year == 2000
> factor x1 x2 x3
> predict var1
> restore
>
> gsort -year
> replace var1= var1[_n-1] if var1 >= .
> xtset country year
> xtreg dep var1 controls
>
> The problem in this program is that after restoring the data I will not
> have var1 anymore. What can be a possible solution?
>
> Thanks and best regards,
>
> Tanveer
>
>
>
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>
--
Choudhry Tanveer Shehzad (Tanveer)
PhD Student
Department of Finance,
Faculty of Economics & Business,
University of Groningen,
Nettelbosje 2
9747 AE Groningen
The Netherlands
Mobile: 0031-644801970
Home Page: http://www.rug.nl/staff/c.t.shehzad/
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