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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