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From | Eric Booth <ebooth@ppri.tamu.edu> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Loop over time |
Date | Thu, 11 Mar 2010 10:13:44 -0600 |
> ******** clear inp id time str5 sex str5 race 1 2 "M" "W" 1 3 "" "" 2 1 "F" "H" 3 1 "F" "B" 3 2 "" "" 3 3 "" "" end foreach v in sex race { bys id: replace `v' = `v'[_n-1] if !mi(`v'[_n-1]) } ******** ~ Eric __ Eric A. Booth Public Policy Research Institute Texas A&M University ebooth@ppri.tamu.edu On Mar 11, 2010, at 10:05 AM, Dmitriy Krichevskiy wrote: > Hello Statalisters, > I have a small problem which I seem to be unable to solve. I have a > large panel dataset. But the creators of the data did not carry > variables such as race and gender beyond the first entry of an > individual in the dataset. I am attempting to fix this issue via > creating a simple loop but get an error message that time series > operators are not allowed (even though I have declared the dataset > xtset, and even tried tsset). Below I provide an examples of the data, > all help is much appreciated, as always. Dmitriy > > id time sex race .... > 1 2 M W > 1 3 . . > 2 1 F H > 3 1 F B > 3 2 . . > 3 3 . . > > > Research Associate, College of Education > Lumina Foundation Project > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/