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Re: st: Append new row to existing matrix
From
Jorge Eduardo Pérez Pérez <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Append new row to existing matrix
Date
Sat, 24 Mar 2012 19:20:46 -0400
clear
set obs 100
gen y=uniform()
forv i=1(1)100 {
qui gen x`i'=uniform()
qui reg y x`i'
matrix b=e(b)
if `i'==1 matrix betas=b
else matrix betas=(betas \ b)
drop x`i'
}
matrix list betas
Also, take a look at -statsby-
_______________________
Jorge Eduardo Pérez Pérez
On Sat, Mar 24, 2012 at 7:11 PM, Sandy Y. Zhu <[email protected]> wrote:
> Hi guys:
>
> How can I append a new row to an existing matrix? Basically, I'm
> trying to update the matrix in a loop,
>
> I have:
>
> for i=1 to 900
> {reg y x1 x2 x3
> mat beta=e(b)
>
> append e(b) to an existing matrix}
>
> Basically, I have 900 regressions to run, and I need to save the
> beta values from each regression. I would like to save them all in a
> matrix, so the first row in the matrix saves the betas from the 1st
> regression, the 2nd row would save the coefficients from the 2nd
> regression, etc....
>
>
> Thank you!
>
> --
> Yours sincerely,
>
> Sandy Y. Zhu
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>
>
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