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Re: st: AW: 'cnreg' command to fit Censored-normal regression model


From   Tracy Bai <tracy.bai@flinders.edu.au>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: AW: 'cnreg' command to fit Censored-normal regression model
Date   Mon, 02 Mar 2009 10:40:59 +1030

Hi Martin,

Yes, you are right, when I define a new matrix as you advised, I can do more I needed.

Many thanks.

Tracy


Martin Weiss wrote, On 27/02/2009 6:49 PM:
<>
I have a hunch that you will want to manipulate the content of these
matrices further. So note that you cannot directly work with the elements of
the returned matrices. You have to define a new matrix first.

*************
webuse news2, clear
cnreg date lncltn famown, censored(cnsrd)
mat list e(b)
mat def A=e(b)
mat list A
di A[1,3]
*************



HTH
Martin

-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Tracy Bai
Gesendet: Freitag, 27. Februar 2009 01:36
An: statalist@hsphsun2.harvard.edu
Betreff: st: 'cnreg' command to fit Censored-normal regression model

I am learning how to use 'cnreg' command to fit Censored-normal regression model, when I tried to get coefficient vector e(b), I got the error information like below,

. display  e(b)
matrix operators that return matrices not allowed in this context
r(509);

Matrices e(b) coefficient vector
      e(V)                variance-covariance matrix of the estimators

How to fix the problem here?

Tracy

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