st: Re: basic matrix definition question

[Kit Baum <baum@bc.edu>]

Doing something like this in Stata's matrix language is IMHO an  
exercise in frustration (and punctuation). Per my recent posting on  
solving nonlinear equations, you would be much better off setting up  
the problem in Mata, making use of -optimize-.


Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


On Oct 16, 2007, at 2:33 AM, statalist-digest wrote:


> Thanks very much.  I totally missed the mkmat command in the manual.
> Although I probably made the example too simple, I am trying to write
> a program to solve for two equations in two unknowns so I am building
> a partial derivative matrix for inverting.  I calculate each of the 4
> partials as variables and then combine them into a matrix.  I was
> stuck on the create matrix step.  Using local macros worked as well
> with a matrix command.  I assume that I would need to first create two
> column vectors from 2 of the four variables and then combine these
> with another mkmat command.
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