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st: RE: Re: A Mata question.


From   "Jann Ben" <ben.jann@soz.gess.ethz.ch>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Re: A Mata question.
Date   Mon, 28 Nov 2005 20:35:16 +0100

Matrix subscripts are typed in brackets. For example

 mata
 A = (1,2,3\4,5,6)
 C = J(2,3,.)
 for (i=1; i<=2; i++) {
  C[i,.] = A[i,.] 
  C[i,.]   // display
 }
 end

Please see

 . help m2_subscripts

ben


> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu 
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of 
> adiallo5@worldbank.org
> Sent: Monday, November 28, 2005 7:52 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Re: A Mata question.
> 
> 
> Thanks Nick for the answer.
> My other question is how to create
> new matrix within loops?
> I am puzzled by the fact that there is no `i'
> in mata's loops as in normal stata.
> Best regards.
> Amadou.
> 
> mata:
> A1 = (1,2,3\4,5,6)
> A1
> A2 = (1,2,3\4,5,6)
> A2
> B1=A1
> B1
> B2=A2
> B2
> for (i=1;i<=2;i++) {
>  i // just to display the increment
>  C(i) = A(i) // ??? I tried Ci = Ai and C`i' = A`i' plus 
> various variants (==,
> (), etc...) with no success
>  C(i) // display
> }
> end:
> 
> 
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