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st: Re: replacing a scalar from mat

From   "Michael Blasnik" <[email protected]>
To   <[email protected]>
Subject   st: Re: replacing a scalar from mat
Date   Tue, 12 Jul 2005 14:33:12 -0400

If you know that you are only extract one row and column, why not
mat B = e(b)
mat B1 = B["y1","eq1:x1"]
scalar s=B1[1,1]

Michael Blasnik
[email protected]

----- Original Message ----- From: "R.E. De Hoyos" <[email protected]>
To: <[email protected]>
Sent: Tuesday, July 12, 2005 12:48 PM
Subject: st: replacing a scalar from mat

I am trying to get a scalar from a matrix (vector). Within a multiple equations framework (-mlogit-) I want to get one of the parameters estimated. After running -mlogit- I tried the following:

mat B = e(b)
scalar s = B["y1","eq1:x1"]

The following error appears:

matrix operators that return matrices not allowed in this context

However if I try one of the following, there is no error reported:

mat A = B["y1","eq1:x1"]
scalar s = B[1,1]

Using the rows and columns names of the matrix is important since these scalars will be replaced into a second vector of estimated parameters.


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