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Re: row vectors changed to column vectors?


From: Christian T. Steigies
Subject: Re: row vectors changed to column vectors?
Date: Wed, 11 Feb 2004 08:28:35 +0100
User-agent: Mutt/1.5.5.1+cvs20040105i

On Tue, Feb 10, 2004 at 02:16:02PM -0500, Przemek Klosowski wrote:
>    But what takes much more time is creating a N:N matrix out of these 
> vectors.
>    I have to "glue" the matrix using a() as a column, where for each column 
> a()
>    has to be "rotated" by one position. I tried first with two for loops. Now 
> I
> 
> Would this be what you need:
> 
>  a=1:5 ; toeplitz(a,shift(fliplr(a),1)) 
>   ans =
> 
>   1  5  4  3  2
>   2  1  5  4  3
>   3  2  1  5  4
>   4  3  2  1  5
>   5  4  3  2  1

Thats exactly it, thanks a lot! 0.6s instead of 60s.

Christian



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