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Message-ID: <49E9BF03.3010102@wifo.ac.at>
Date: 2009-04-18T11:52:35Z
From: Serguei Kaniovski
Subject: Dummy (factor) based on a pair of variables

Bernardo: this is not quite what I am looking for,

Let the data be:
y,i,j
1,AUT,BEL
2,AUT,GER
3,BEL,GER

then the dummies sould look like:

y,i,j,d_AUT,d_BEL,d_GER
1,AUT,BEL,1,1,0
2,AUT,GER,1,0,1
3,BEL,GER,0,1,1

I can generate the above dummies but can this design be imputed in a 
reg. model directly?

Serguei