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st: AW: RE: AW: Simulation in Stata


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: RE: AW: Simulation in Stata
Date   Thu, 28 May 2009 14:48:19 +0200

<> 

Probably true, in the absence of a declaration to the contrary from her... I
did not seet through the code to arrive at this intention...


HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Nick Cox
Gesendet: Donnerstag, 28. Mai 2009 12:32
An: statalist@hsphsun2.harvard.edu
Betreff: st: RE: AW: Simulation in Stata

My comment is a bit different. What Susan apparently user wants can be
achieved by 

expand 10 
sort id_psu, stable 
gen no = _n 

In short, the -stable- option of -sort- is intended for this purpose. 

In a big dataset, that last should be

gen long no = _n 

Nick 
n.j.cox@durham.ac.uk 

Martin Weiss

[...] 

*************
expand 10
gen no = _n

sort id_psu no
drop no
gen no = _n
*************

is too complicated as you first have Stata record the current sort order
via
"_n" , then -sort- on "id_psu" and then -drop- "no" - only to recreate
it in
the next step.

[...] 


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