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From | Beatrice Crozza <beatrice.crozza@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: Missing values |
Date | Thu, 27 Aug 2009 15:22:16 +0200 |
Dear all, I have just realised to have a problem with my database. I need to generate the variable return from my prices. So I did: tsset time gen lreturn= ln(price/l.price) but the result is that there are 12 missing values. This problem does not happen with Eviews, for example. What I did wrong? Thank you very much Bea * * 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/
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