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RE: st: RE: pairwise dummy variables


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: pairwise dummy variables
Date   Wed, 3 May 2006 14:20:22 +0100

Remove -byte- if the sums are too big for 
a byte. 

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

> -----Original Message-----
> From: Nick Cox 
> Sent: 03 May 2006 14:16
> To: 'statalist@hsphsun2.harvard.edu'
> Subject: RE: st: RE: pairwise dummy variables
> 
> 
> Not sure I understand the query, but this 
> illustrates the technique. 
> 
> local n = <whatever> 
> 
> forval i=1/`n' {
> 	local I=`i'+1
> 	forval j=`I'/`n' {
> 		gen byte sum_``i''_``j''= foo[`i'] + bar[`j'] 
> 	}
> }
> 
> Nick 
> n.j.cox@durham.ac.uk 
> 
> > -----Original Message-----
> > From: owner-statalist@hsphsun2.harvard.edu
> > [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Serguei
> > Kaniovski
> > Sent: 03 May 2006 14:08
> > To: statalist@hsphsun2.harvard.edu
> > Subject: RE: st: RE: pairwise dummy variables
> > 
> > 
> > Nick, that you it works. Just a simple follow-up question: I have a 
> > binary variable "binvar" with n observations. I would like 
> to compute 
> > the sums of the i-th and j-th element of "binvar", and put 
> these into 
> > separate variables named "sum_i_j" using a double loop:
> > 
> > forval i=1/n {
> > local I=`i'+1
> > forval j=`I'/n {
> > ...
> > gen byte sum_``i''_``j''=r(min)
> > }
> > }
> > 
> > What command should I use instead of the dots?
> > 
> > Thanks again,
> > Serguei
> > -- 
> > ___________________________________________________________________
> > 
> > Austrian Institute of Economic Research (WIFO)
> > 
> > Name: Serguei Kaniovski			P.O.Box 91
> > Tel.: +43-1-7982601-231			Arsenal Objekt 20
> > Fax:  +43-1-7989386			1103 Vienna, Austria
> > Mail: Serguei.Kaniovski@wifo.ac.at
> > 
> > http://www.wifo.ac.at/Serguei.Kaniovski
> > 
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> > 
> 

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