MATLAB Central Newsreader - add all the dimensions

add all the dimensions

Diego Lass — Fri, 04 Sep 2009 03:50:03 -0400

Hi

I am trying to add the matrices of different dimension together, ex

a(:,:,1)=
1 2 3
4 5 6

a(:,:,2) =
0 0 0
0 0 1

a(:,:,3) =
1 0 0
0 0 0

some function later gives
b =
2 2 3
4 5 7

what is the most efficient way of doing this?

Thanks!
Diego

Re: add all the dimensions

dpb — Fri, 04 Sep 2009 03:55:18 -0400

Diego Lass wrote:
...

> what is the most efficient way of doing this?

sum(a,3)

--

Re: add all the dimensions

Diego Lass — Fri, 04 Sep 2009 04:02:21 -0400

Got it! use sum(a,3);

"Diego Lass" <dlISCool@gmail.com> wrote in message <h7q2pb$qen$1@fred.mathworks.com>...
> Hi
>
> I am trying to add the matrices of different dimension together, ex
>
> a(:,:,1)=
> 1 2 3
> 4 5 6
>
> a(:,:,2) =
> 0 0 0
> 0 0 1
>
> a(:,:,3) =
> 1 0 0
> 0 0 0
>
> some function later gives
> b =
> 2 2 3
> 4 5 7
>
> what is the most efficient way of doing this?
>
> Thanks!
> Diego
>
>
>
>

Re: add all the dimensions

Diego Lass — Fri, 04 Sep 2009 04:05:20 -0400

Got it! sum(a,3)
"Diego Lass" <dlISCool@gmail.com> wrote in message <h7q2pb$qen$1@fred.mathworks.com>...
> Hi
>
> I am trying to add the matrices of different dimension together, ex
>
> a(:,:,1)=
> 1 2 3
> 4 5 6
>
> a(:,:,2) =
> 0 0 0
> 0 0 1
>
> a(:,:,3) =
> 1 0 0
> 0 0 0
>
> some function later gives
> b =
> 2 2 3
> 4 5 7
>
> what is the most efficient way of doing this?
>
> Thanks!
> Diego
>
>
>
>