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Re: st: How to return regression results from a complex column vector in mata back to stata


From   Ben Smythe <ben.solomon81@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to return regression results from a complex column vector in mata back to stata
Date   Tue, 2 Aug 2011 23:21:12 +0200

Hi Christophe,

thanks for your answer. Unfortunately mm_smatlist() also requires real
matrices/vectors. My preferred solution would be to have the results
column vector in Stata again but if there is no way of doing this with
complex vectors/matrices I guess mata will have to do.
Hopefully some of the mata-wizzards are reading this, but thanks again!

Best,

Ben


On Tue, Aug 2, 2011 at 6:18 PM, Christophe Kolodziejczyk
<ck.statalist@gmail.com> wrote:
> Have your tried mm_smatlist() from the moremata package? I have not
> tried, but maybe it is possible to display complex values with it (the
> function is for string matrices)
> Christophe
>
> 2011/8/2 Ben Smythe <ben.solomon81@googlemail.com>:
>> Dear statalisters,
>>
>> currently I am modifying a liml-like estimator in mata. In one of the
>> final steps this involves multiplication with a complex scalar (not
>> symmetric, but has real eigenvalues) which finally causes the
>> estimation results to be a complex column vector. Thus
>> st_matrix("name", mat) will not work as it cannot be used with strings
>> or complex numbers and returns the error message: 3253  nonreal found
>> where real required
>> Now I have tried to use locals or macros to move the results from mata
>> to stata and I tried to create a new variable to store the results
>> using st_store, though this didn't work either.
>>
>> Essentially what I would like to do in the end is to display the
>> column vector of results (with it's standard errors (V), t-statistics
>> and confidence intervalls) nicely in the fashion of: ereturn post b V
>> I can see the results in mata by typing the name of the results-column
>> vector, though it would be nicer to go back to stata and have the
>> usual regression output table. If anyone knows a solution to this it
>> would be fantastic.
>>
>> Best,
>>
>> Ben
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