Re: st: Mata looping question

[Maarten Buis <maartenlbuis@gmail.com>]

On Tue, Oct 18, 2011 at 11:37 AM, Anna Reimondos wrote:
> For example if I have one original matrix called 'a'
>
> matrix a=(1,0,0\0,2,1\0,1,0\0,0,0)
> matrix list a
>
> I then want to create another matrix 'b' which is equal to 'a' but
> where every element has been shifted up one row and across one column.

I would not do that with a loop:

*------------- begin example ----------------
mata
a=(1,0,0\0,2,1\0,1,0\0,0,0)
b = J(5,1,0), (a \ J(1,3,0))
b
end
*----------- end example ----------------
(For more on examples I sent to the Statalist see:
http://www.maartenbuis.nl/example_faq )

Hope this helps,
Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
--------------------------
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