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RE: st: about -cholesky()-


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: about -cholesky()-
Date   Tue, 22 May 2012 15:42:13 +0100

A second guess is that that would evoke a different error message. It follows that you did not type what you said. 

Note that the authors of -prvalue- are not (obviously) members of Statalist. 

Nick 
n.j.cox@durham.ac.uk 

Nick Cox

-prvalue- is a user-written command, whose provenance you do not give.

My guess is that your problem is a side-effect of incorrect syntax.
You use - where = seems needed for the -x()- option.

On Tue, May 22, 2012 at 1:59 PM, Huaandrew <andrew0845@hotmail.com> wrote:

> I tried to use -prvalue- to make some prediction but ended up with the following error message in Stata:
> . prvalue, x(NYTCongyrstd -1.8190)
>
> cholesky(): matrix has missing values
>
> r(504);
>
>
> Would you please tell me what might be the possible reasons for that error?
> I searched online but didn't find how Stata implements cholesky decomposition in -prvalue-.

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