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st: Is there a way to center factor variables

From   Sami Alameen <>
Subject   st: Is there a way to center factor variables
Date   Sat, 19 Nov 2011 18:57:29 +0200

If using the grunfeld standard data in Stata and running:

use grunfeld
reg invest kstock mvalue i.time

is there a way to make Stata use all members in company and constrain
there coefficient to sum up to ZERO, and so the constant becomes the
grand mean and not the base category. Things even look harder with
time effect as well.

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