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st: RE: Count observations previous to date
From
"David Radwin" <[email protected]>
To
<[email protected]>
Subject
st: RE: Count observations previous to date
Date
Thu, 31 May 2012 15:03:49 -0700 (PDT)
Fabian,
Is this what you want?
. bysort ccode (year) : gen ongo_cum = sum(ongo)
It doesn't seem to count cumulative number of wars but rather cumulative
years at war.
David
--
David Radwin
Senior Research Associate
MPR Associates, Inc.
2150 Shattuck Ave., Suite 800
Berkeley, CA 94704
Phone: 510-849-4942
Fax: 510-849-0794
www.mprinc.com
> -----Original Message-----
> From: [email protected] [mailto:owner-
> [email protected]] On Behalf Of Fabian Müller
> Sent: Thursday, May 31, 2012 2:53 PM
> To: [email protected]
> Subject: st: Count observations previous to date
>
> Hey Guys,
>
> i got the following problem:
>
> I have a dataset with several countries (ccode) over time (year). Each
> Observation got a binary variable(ongo) showing if there was a war or
not.
> Now i need to create a variable for each observation counting the number
> of wars the particular country was involved until (and inclusive) to
this
> date.
>
> For example:
>
> ccode year ongo count
> 200 2000 0 0
> 200 2001 1 1
> 200 2002 0 1
> 200 2003 0 1
> 200 2004 1 2
> 200 2004 1 3
>
> Can't figure out a way to do this.
>
> Tanks for Help
>
> Fabian
>
>
>
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