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Re: st: to write _n in [./.] form


From   Anders Alexandersson <[email protected]>
To   [email protected]
Subject   Re: st: to write _n in [./.] form
Date   Fri, 25 Feb 2011 17:15:19 -0500

Ajjee, I would create a -touse- variable to simplify repeating code.
One example is at http://www.stata.com/statalist/archive/2010-11/msg00089.html
If the calculations are much easier in wide form instead, then I would
consider temporarily reshaping to wide for the calculations.

Anders Alexandersson
[email protected]

On Fri, Feb 25, 2011, ajjee <[email protected]> wrote:

> I have to calculate a variable in this way
>
> gen awc_4=1 if awc[_n]==1 & awc[_n+1]!=1 & awc[_n+2]!=1 &  awc[_n+3]!=1 &
> awc[_n+4]!=1
>
> and on basis of the above variable, generate a new variable of average
>
> gen rgg3avgf=( rgg[_n]+ rgg[_n+1]+ rgg[_n+2])/3 if  awc_4[_n-1]==1
>
> Is there a way to write the above commands in short form ( like, _n/_n+3) as
> for other variables I've to include more terms in calculation of awc_3y and
> also for higher term in averages.

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