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From | Thomas Gericks <ThomasGericks@web.de> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Problem with paneldata |
Date | Wed, 16 Jun 2010 21:39:07 +0200 (CEST) |
I changed the time series to quartal. it says: . xtset gvkey2 quartal panel variable: gvkey2 (unbalanced) time variable: quartal, 5 to 199, but with gaps delta: 1 unit when i now try: gen lag_saleq = L.saleq it gives me the error: "Not sorted" before i used datadate! there it gave me: . xtset gvkey2 datadate panel variable: gvkey2 (unbalanced) time variable: datadate, 30 Apr 61 to 31 Dec 09, but with gaps delta: 1 day The delta is wrong. it should have been. quarterly. I have no idea how to solve this problem. Thanks -----Ursprüngliche Nachricht----- Von: Scott Merryman <scott.merryman@gmail.com> Gesendet: 16.06.2010 21:22:32 An: statalist@hsphsun2.harvard.edu Betreff: Re: st: Problem with paneldata What does -xtset- report? Does the time variable have gaps? Is the delta set appropriately? Scott On Wed, Jun 16, 2010 at 2:09 PM, Thomas Gericks wrote: > Hello, > > I am working with panel data. > > Therefore i declared it as paneldate, saying: > > xtset gvkey (company name) datadate(time) > > Now, when i try to work with lagged values, i.e. > > gen lag_saleq = L.saleq > > It doesnt show me any errors but the varlist lag_saleq is always empty, instead of having the value of the last time period. > > What do i do wrong? Can anyone help me? > > Thanks a lot, > > Thomas Gericks * * 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/ ___________________________________________________________ WEB.DE DSL ab 19,99 Euro/Monat. Bis zu 150,- Euro Startguthaben und dazu 50,- Euro Geldprämie inklusive! <a href="https://freundschaftswerbung.web.de"; target="_blank">https://freundschaftswerbung.web.de</a> * * 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/