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Re: st: re: count variable


From   Michael Horowitz <horowitz@fas.harvard.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: re: count variable
Date   Sun, 3 Apr 2005 00:40:55 -0500 (EST)

Thanks to all.  This looks perfect.  Will let you know if more problems
emerge.

Michael

On Sat, 2 Apr 2005, Kit Baum wrote:

> My previous solution created a dummy, not a counter, and I see that is
> not what is wanted. Andrew Felton's solution
>
> sort ccode years
> by ccode: gen nukecount = sum(nukes)
>
> could also be written as
>
> bys ccode (years): gen nukecount = sum(nukes)
>
> although one would hope that since this is panel data that it has been
> declared as such by tsset; in that case no sorting is required.
>
> But Paul Millar is wrong: GENERATE's sum function creates a running
> sum, not a constant as does EGEN's sum function. generate sum is indeed
> the right tool here.
>
> Kit Baum, Boston College Economics
> http://ideas.repec.org/e/pba1.html
>
> *
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>

*******************************************************************************

Michael Horowitz
78 Kirkland Street, #1
Cambridge, MA 02138

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