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st: RE: Basic Matrix Definition Question


From   "Daniel Waxman" <dan@amplecat.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Basic Matrix Definition Question
Date   Mon, 15 Oct 2007 14:16:16 -0400

I'm no matrix expert, but there is a logical problem here.

You define x and y as variables and they can take on a different value for
each observation (although you are giving them the same value for each
observation in your example).

so it is unclear which values of x and y your matrix command would use.

. display x 

Gives you the value of x in the first observation (although it is unclear to
me why Stata lets you do this).

Perhaps what you need are local macros?

. local x 1
. local y 1
. matrix byvar = (`x',`y')


Daniel
 

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