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From |
David Kantor <dkantor@jhu.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Question about cummulative summatories |

Date |
Tue, 29 Jul 2003 14:02:44 -0400 |

In response to Sirenia Vazquez's question about cumulative sum, and the reply that Gabi Huiber provided, I would like to add...

egen y=sum(x)

will give the overall sum (a constant), whereas,

gen y=sum(x)

will give the cumulative sum.

Either can be combined with -by- to partition the data into subsets.

--David

At 01:41 PM 7/29/2003 -0400, you wrote:

if you have a variable x, and want another variable y=sum(x), then Stata 7's egen y=sum(x) will do it. Gabi -----Original Message----- From: Sirenia Vazquez [mailto:sirenia.vazquez@cide.edu] Sent: Tuesday, July 29, 2003 2:26 PM [...] There is a command in the spss program in which you can generate a new variable that is the cumulative summatory of the original variable (namely csum). I would like to know if there is a similar command or funcion in Stata, or if there is any other way I could create that new variable. Thank you. Sirenia Vazquez

David Kantor Institute for Policy Studies Johns Hopkins University dkantor@jhu.edu 410-516-5404 * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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