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RE: st: RE: submatrix
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
RE: st: RE: submatrix
Date
Tue, 15 Nov 2011 11:10:39 +0000
Yes; Stata can only regard it as an error if you refer to rows and/or columns that don't exist.
Nick
[email protected]
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of behailu ayele
Sent: 15 November 2011 10:56
To: [email protected]
Subject: Re: st: RE: submatrix
Nick,
Thanks very much. I now went to matrix extraction and I think know my
problem, now. My estimation result reads only as row. Whatever I want
to extract,, it works when I specify as one row and any number of
columns. What I mean is, it works when I do either of these:
matrix A = b[1, "b1".."b9"]
matrix A = b[1, "a1".."a9"]
but it says conformability error whenever I do
matrix A = b[1..2, "a1".."a9"]
I am thinking I need to restructure my estimation result such that it
is a proper matrix to begin with (with 9 by 9 dimension) and not just
a matrix with one row and several columns.
Thankyou again.
behailu
On 11/15/11, Nick Cox <[email protected]> wrote:
> This is covered by the help on -matrix extraction-
>
> matrix new = b[1..9, 7..9]
>
> The = operator for assignment should be used (not ==).
>
> Nick
> [email protected]
>
> behailu ayele
>
> I have problem extracting parts of a matrix I estimated.
>
> my matrix e(b) is 9 by 9. Now I want to extract the first line and I did
> this.
>
> matrix b=e(b)
> and then
> matrix new==b[1,1..9]
>
> my problem is when i want to have a 3 by 9 matrix of the last three columns
>
> is this not what I am supposed to do?
>
> matrix new==b[7/9,1..9]
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