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Re: st: Substituting submatrix


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Substituting submatrix
Date   Fri, 24 Aug 2007 08:40:47 +0100 (BST)

With matrix substitution you only specify the upper left corner, so:

mat C = J(6,6,1)
mat list C
mat C[1,1]= 3,4\5,6
mat list C

Hope this helps,
Maarten

--- Rachel <academicgirl@gmail.com> wrote:

> How can one efficiently replace a submatrix in Stata?  For example,
> suppose we have C, an 6x6 identity matrix and would like to subsitute
> [3,4\5,6]  as the upper left 2x2 submatrix.
> 
> I've tried mat C[1..2,1..2]=3,4\5,6
> 
> but this leads to a syntax error.
> 
> Thanks,
> Rachel
> *
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> 


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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