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From | Nick Cox <njcoxstata@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: scaling by average |
Date | Wed, 12 Dec 2012 09:51:29 +0000 |
The -sum()- here looks wrong as the function returns cumulative sums and your additions are explicit any way. If I understand you correctly you want tsset state date gen average = (score* count + L7.score*L7.count + F7.score*F7.count) / (count + L7.count + F7.count) but if this is weekly data, then tsset state date, delta(7) gen average = (score* count + L1.score*L1.count + F1.score*F1.count) / (count + L1.count + F1.count) is simpler. Nick On Tue, Dec 11, 2012 at 9:10 PM, Claudius Li <claudiusli@janysanalytics.com> wrote: > I've got an other question on the panel data set from my previous post. > I've reshaped it so that I now have > > date state score time <other stuff> > > I want to add a variable normalized_score = score - average_for_day > Where average_for_day = sum(score * count + score[n-7] * count[n-7] > +score[n+7] * count[n+7] ... ) / sum(count + count[n-7] + count[n+7] > ... ) > > It seems a bit complicated to do this with loops. Is there a simpler way? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/