Have a look at Ben Jann's -center- command.
--Mark
To: [email protected]
From: Kit Baum <[email protected]>
Subject: st: re: centering variables
Date sent: Tue, 7 Dec 2004 08:32:06 -0500
Send reply to: [email protected]
> It is not clear whether Naceur has one variable with chunks belonging
> to each country ("long" format, in which Uli's solution with by
> country, sort: egen xbar = mean(xi) would work well) or six variables
> named x_1 - x_6 ("wide" format). Assuming the latter:
>
> forval i=1/6 {
> summ x_`i'. meanonly
> qui replace x_`i' = x`i' - r(mean)
> }
>
> If a new set of variables are desired, the second line in the loop
> could be
> qui gen xc_`i' = x_`i' - r(mean)
>
> Kit Baum, Boston College Economics
> http://ideas.repec.org/e/pba1.html
>
> On Dec 7, 2004, at 2:33 AM, Naceur wrote:
>
> > First, I have a variable x_i for each six country (i = 1,...,6) and
> > I want to calculate the difference x_i - xbar_i. Or the xbar_i is
> > the mean of the variable of x_i for each country. Did you have an
> > idea about the command that I should do?
>
>
>
> Kit Baum, Boston College Economics
> http://ideas.repec.org/e/pba1.html
>
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Prof. Mark E. Schaffer
Director
Centre for Economic Reform and Transformation
Department of Economics
School of Management & Languages
Heriot-Watt University, Edinburgh EH14 4AS UK
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44-131-451-3485 CERT administrator
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