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RE: st: sum question


From   "Maarten Buis" <M.Buis@fsw.vu.nl>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: sum question
Date   Tue, 13 Jun 2006 17:06:21 +0200

bys id: egen total(Income)

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology 
Vrije Universiteit Amsterdam 
Boelelaan 1081 
1081 HV Amsterdam 
The Netherlands

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214 

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Patricia Vera Rojas
Sent: dinsdag 13 juni 2006 17:02
To: statalist@hsphsun2.harvard.edu
Subject: st: sum question

Hi everyone,

I have:

ID  Income
x     15
x     20
x      5
xx     15
xx     10
xx     10
xx     10

I want to get:

ID  Tot-Inc
x     40
x     40
x     40
xx    45
xx    45
xx    45
xx    45


How can I do it?

Thanks a lot,

Patricia


> I have a recursive problem involving linked list of
> structures in Mata, but
> after some number of chains (number is not fixed, that's
> why I decided to
> use list instead of a matrix) I don't need an earlier
> members of the list
> and they can be dropped to free some memory. If I don't
> drop them, my list
> is getting too long and even makes Stata to crash.
>
> I was wondering if there was some way of clearing
> structures like other
> objects in Stata.
>
> Thanks in advance,
> Zurab
>
>
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>


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