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Re: st: Append new row to existing matrix
From
"Sandy Y. Zhu" <[email protected]>
To
[email protected]
Subject
Re: st: Append new row to existing matrix
Date
Sat, 24 Mar 2012 19:28:20 -0400
Thank you!
Would some one mind telling me what this portion of the code means?
> qui gen x`i'=uniform()
> qui reg y x`i'
I'm trying to run a multivariate regression, so should I do multiple
qui gen x`i'?
Thanks!
2012/3/24 Jorge Eduardo Pérez Pérez <[email protected]>:
> 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
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>>
>>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
--
Yours sincerely,
Sandy Y. Zhu
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/