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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: AW: running sum |

Date |
Wed, 4 Aug 2010 16:53:57 +0200 |

<> ************* clear* inp byte(LINE SUBST POWER) 1 1 10 1 2 20 1 3 15 1 4 5 end bys LINE (SUBST): gen CUM_POW=sum(POWER) li, noo sepby(LINE) ************* HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Maximiliano Manuel Silva Correa Gesendet: Mittwoch, 4. August 2010 16:50 An: statalist@hsphsun2.harvard.edu Betreff: st: running sum Dear stata people, Im stuck trying to do a running sum using by. My problem is like: Suppose we have serveral power distribution lines (composed of serveral substations) all around the states. Suppose our variables are LINE SUBST POWER I want to generate a variable CUM_POW containing the cummulative sum of POWER by LINE SUBST For instance, LINE SUBST POWER CUM_POW 1 1 10 10 1 2 20 30 1 3 15 45 1 4 5 50 how goes the sintaxis for that? * * 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/

**References**:**st: running sum***From:*Maximiliano Manuel Silva Correa <maxsilvacorrea@gmail.com>

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