Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
AW: st: running sum
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
AW: st: running sum
Date
Wed, 4 Aug 2010 17:05:37 +0200
<>
See NJC`s seminal http://www.stata-journal.com/sjpdf.html?articlenum=pr0004
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag von Maarten buis
Gesendet: Mittwoch, 4. August 2010 17:04
An: [email protected]
Betreff: Re: st: running sum
--- On Wed, 4/8/10, Maximiliano Manuel Silva Correa wrote:
> 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
bys LINE (SUBST) : gen CUM_POW = sum(POWER)
Within each line, Stata sorts on SUBST, and the -sum- function
returns the running sum.
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
*
* 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/