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st: Re: Mata question

From   Kit Baum <>
Subject   st: Re: Mata question
Date   Tue, 25 Mar 2008 06:58:16 -0400

I don't understand the question. The J(nrow, ncol, value) function in both Stata and Mata creates a rectangular array which can be any shape (including row or column vector and, in Mata, an object with 0 rows and/or columns). It does not have anything to do with symmetry.

Kit Baum, Boston College Economics and DIW Berlin
An Introduction to Modern Econometrics Using Stata:

On Mar 25, 2008, at 02:33 , Danielle wrote:

Is there something in Mata like J() that creates a regular matrix as
opposed to a symmetric matrix? In other words, I'd like to create a
mXn matrix filled w/ empty values that I will fill in later.
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