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From |
Kit Baum <[email protected]> |

To |
[email protected] |

Subject |
st: Re: basic matrix definition question |

Date |
Tue, 16 Oct 2007 06:21:35 -0400 |

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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