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Re: st: Loops in Mata
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: Loops in Mata
Date
Wed, 26 Jan 2011 10:18:48 +0000
As far as Mata is concerned, it looks as if you are asking it to do
the same calculation 379 times on a variable called -Pi-.
You want Mata to cycle over 379 different variables, which is a very
different problem. It's probably better to read in all the data at
once to a matrix, then loop over the column vectors.
Nick
On Wed, Jan 26, 2011 at 10:08 AM, gsborker <[email protected]> wrote:
> I am trying to do the following in mata
>
> mata
>
> for (i=1; i<=379; i++) {
>
> xi = st_data(.,"Pi") ;
> yi = (xi)' ;
> polyroots(yi) ;
>
> }
> end
>
> where P* are (674x1) column vectors. I am trying to run the "polyroots"
> command 379 times on (1x674) row vectors. This is not working and I'm
> getting recurrent errors.
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