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Re: st: trouble using _n-1


From   "Joao Ricardo F. Lima" <jricardofl@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: trouble using _n-1
Date   Tue, 25 Nov 2008 14:10:27 -0300

Joseph,

I think that this can do the trick:

by idcode: assert var1-var1[_N-1]==0

HTH,

Joao Lima

2008/11/25 Joseph Wagner <joseph.wagner@wright.edu>:
> I wish to use the program -concord- to perform an interrater reliability for
> a rater.  The data is arranged as such:
>
> idcode      date    var1   var2
> --------------------------------------------
> person1   date    var1   var2
> person1   date    var1   var2
> person2   date    var1   var2
> person2   date    var1   var2
>
>
> there are too many variables and observations for me to -reshape- wide so I
> thought that I could try this:
>
> bysort idcode date: concord var1 var1[_n-1]      since the data is arrayed
> as pairs of observations which I wish to compare
>
> but instead of working I get the following error: "_n unknown weight type"
>
> Am I forced to try some sort of piecewise -reshape- (sets of variables) or
> am I just doing this all wrong?
> *
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>



-- 
----------------------------------------
Joao Ricardo Lima, D.Sc.
Professor
UFPB-CCA-DCFS
Fone: +553138923914
Skype: joao_ricardo_lima
----------------------------------------
*
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*   http://www.ats.ucla.edu/stat/stata/



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