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st: RE: logic for assigning values across an entire group


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: logic for assigning values across an entire group
Date   Tue, 22 Sep 2009 20:12:21 +0200

<>

" I am battling the logic demons.  "


Nick`s article will surely tip the odds for victory in your favor:

http://www.stata-journal.com/sjpdf.html?articlenum=pr0004

Also peruse this section of the FAQ, if you want to reach the expert level:
http://www.stata.com/support/faqs/data/#manip


HTH
Martin


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Lloyd Dumont
Sent: Dienstag, 22. September 2009 20:00
To: statalist@hsphsun2.harvard.edu
Subject: st: logic for assigning values across an entire group

Hello.  I am battling the logic demons.  There has got to be a way to do
this using -egen- I think...

Let's say I have observations partitioned into groups.  Each observation has
a numeric value for STATUS, something like this...

GROUP             STATUS
1                 1
1                 1
1                 3
2                 3
3                 1
3                 2
3                 2 

I would like to create a third variable, HISTATUS, that takes the highest
value for STATUS within each group, and assigns it to every observation
within that group.  In the example above, HISTATUS would take on the value
of 3 for all obs in GROUP 1, 3 for the obs in GROUP 2, and 2 for all the obs
in GROUP 3.

Can someone please suggest a clever way of doing that?  I am guessing that
it would involve -egen- and the rank option, but I could be wrong about
that.

Thank you for your help.  Lloyd Dumont




      
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