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st: AW: AW: sum of many variables


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: AW: sum of many variables
Date   Mon, 26 Oct 2009 19:54:25 +0100

<> 


Note, however, that there is a hazard involved when specifying a -varlist-
that encompasses all variables between "x1" and "xn" via the dash notation:
The number of variables between them changes with the -sort- order, as seen
after -describe- (see [U], page 101, example 14). So next time you run this
code, the result could be different. Issuing an explicit -sort- or -order-
could save you trouble. 

Also note that the -sum()- function would give you a running sum, and
accepts only a -varname-, not a -varlist-...


HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Martin Weiss
Gesendet: Montag, 26. Oktober 2009 19:45
An: statalist@hsphsun2.harvard.edu
Betreff: st: AW: sum of many variables


<> 



*************
egen x=rowtotal(x1-xn)
*************



HTH
Martin

-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Andrea Rispoli
Gesendet: Montag, 26. Oktober 2009 19:46
An: statalist@hsphsun2.harvard.edu
Betreff: st: sum of many variables

Dear Statalisters,

I would like to use the sum command, i.e.

egen x= sum (x1, x2...xn)

however since my n is a large number I would like to indicate that I
want the sum from x1 to xn without specifying all variables.

Do you have any suggestions?

Thank you very much in advance

AR
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