Re: binary operators not implemented for 'cell' by 'scalar' operations

[Marco Atzeri]

On 24/11/2015 09:56, Jonathan Camilleri wrote:
> I thought I could do matrix multiplications and the mathematical
> operators, but evidently I cannot.
>
> See
> https://en.wikipedia.org/wiki/Operation_(mathematics)
> https://en.wikipedia.org/wiki/Algebra
> https://en.wikipedia.org/wiki/Order_of_operations
>
>
>   m1 = {1 1; 2 4; 4 8; 3 6}
> m1 =
> {
>    [1,1] =  1
>    [2,1] =  2
>    [3,1] =  4
>    [4,1] =  3
>    [1,2] =  1
>    [2,2] =  4
>    [3,2] =  8
>    [4,2] =  6
> }
>  >> m2 = m1.*0.2
> error: binary operator '.*' not implemented for 'cell' by 'scalar'

m1 is not a Matrix.

May be you were looking for

octave:1> m1 = [1 1; 2 4; 4 8; 3 6]
m1 =

   1   1
   2   4
   4   8
   3   6

octave:2> m2 = m1.*0.2
m2 =

   0.20000   0.20000
   0.40000   0.80000
   0.80000   1.60000
   0.60000   1.20000