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RE: AW: st: a specific data management question


From   Grace Jessie <gracejessie@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: AW: st: a specific data management question
Date   Wed, 11 Aug 2010 10:42:58 +0000

 
egen tag1 = total(tag==1), by(firm)

It is exactly what I want!
Thank you for all replies.
 
Grace

----------------------------------------
> From: martin.weiss1@gmx.de
> To: statalist@hsphsun2.harvard.edu
> Subject: AW: st: a specific data management question
> Date: Wed, 11 Aug 2010 09:13:24 +0200
>
>
> <>
>
> I think this code comes closer to Grace`s wishes, as the maximum was not
> really requested, but a count:
>
> *************
> clear
> input firm tag
> 1 0
> 1 0
> 1 1
> 1 1
> 1 3
> 2 0
> 2 1
> 2 2
> 2 3
> 3 0
> 3 0
> end
>
> egen tag1 = total(tag==1), by(firm)
>
> l, sepby(firm) noo
> *************
>
>
> As always, http://www.stata-journal.com/sjpdf.html?articlenum=pr0004 is the
> best source...
>
>
> HTH
> Martin
>
> -----Ursprüngliche Nachricht-----
> Von: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Michael N.
> Mitchell
> Gesendet: Mittwoch, 11. August 2010 06:27
> An: statalist@hsphsun2.harvard.edu
> Betreff: Re: st: a specific data management question
>
> How about this...
>
> clear
> input firm tag
> 1 0
> 1 0
> 1 1
> 1 1
> 1 3
> 2 0
> 2 1
> 2 2
> 2 3
> 3 0
> 3 0
> end
> egen tag1 = max(tag==1), by(firm)
>
> However, note that this gives a value of 0 if all values of tag are . for a
> given firm.
>
> Hope this helps,
>
> Michael N. Mitchell
> Data Management Using Stata - http://www.stata.com/bookstore/dmus.html
> A Visual Guide to Stata Graphics - http://www.stata.com/bookstore/vgsg.html
> Stata tidbit of the week - http://www.MichaelNormanMitchell.com
>
>
>
> On 2010-08-10 8.50 PM, Grace Jessie wrote:
> > firm tag
> > 1 0
> > 1 0
> > 1 1
> > 1 1
> > 1 3
> > 2 0
> > 2 1
> > 2 2
> > 2 3
> > 3 0
> > 3 0
> *
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