cushion the matrix

Diego Lass — Fri, 04 Sep 2009 04:04:01 -0400

Hi,
I want to build a matrix from
a =
1 2 3
4 5 6
7 8 9

to

b=
0 0 0 0
0 4 5 6
0 7 8 9

what is the most efficient way to do this
thanks
Diego

Re: cushion the matrix

us — Fri, 04 Sep 2009 05:53:01 -0400

"Diego Lass" <dlISCool@gmail.com> wrote in message <h7q3jh$ir0$1@fred.mathworks.com>...
> Hi,
> I want to build a matrix from
> a =
> 1 2 3
> 4 5 6
> 7 8 9
>
> to
>
> b=
> 0 0 0 0
> 0 4 5 6
> 0 7 8 9
>
> what is the most efficient way to do this
> thanks
> Diego

one of the solutions

     clear a b;
     a=[
          1 2 3
          4 5 6
     ];
     b(2:3,2:4)=a;

us

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cushion the matrix

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