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| From | "Martin Weiss" <martin.weiss1@gmx.de> |
| To | <statalist@hsphsun2.harvard.edu> |
| Subject | st: AW: "vertical filter and sum of data" |
| Date | Tue, 13 Jul 2010 17:28:47 +0200 |
<> Maximiliano may also want to take a look at NJC`s seminal http://www.stata-journal.com/sjpdf.html?articlenum=pr0004 HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Maximiliano Manuel Silva Correa Gesendet: Dienstag, 13. Juli 2010 16:53 An: statalist@hsphsun2.harvard.edu Betreff: st: "vertical filter and sum of data" Dear Stata Community, Id like to sum vertically some entries of my data but i dont know how. Could you please tell me the sintax and structure of how to do this? Suppose we have a several power transmission lines with several substations in between, all over the US, indexed from 1 to Ni, corresponding to a certain line Li. Each substation has a power consumption (suppose one line per state). Additionaly we have a time variable MONTH. The structure of the data is LINE S_INDEX MONTH POWER Fixing LINE, MONTH, id like to sum POWER all over (S_INDEX) the line. Any help will be greatly appreciated. Thank you in advance :) . Max * * 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/