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st: initial value not feasible with -uhet- option in frontier command


From   Yi CHEN <Yi.Chen@u-clermont1.fr>
To   statalist@hsphsun2.harvard.edu
Subject   st: initial value not feasible with -uhet- option in frontier command
Date   Mon, 13 Jun 2005 17:52:03 +0200

Hi,

I read David (ddrukker@stata.com)'s answer to a question concerning the "intial values not feasible" message with command "frontier".
My question is, if I include a -uhet- option in the command, and got the "initial values not feasible" error message, how can I correct the problem? If I do not put the variables in -uhet- in OLS regression, I will get the error message as "initial vector: matrix must be dimension ** (the number of variables after frontier + the number of variables in -uhet- option)". But will there be problem if I add simply the variables in -uhet- in the OLS regression?
Hope I've made clear the question.
Many thanks.

Chen
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