How to multiply a cell array with a matrix

Ya I have a cell matrix example [1 0;1 0;0 1][0 1;0 1;1 0] and a matrix of 3*5. I want to multiply this cell matrix and the 3*5 matrix. How can I do this thing? What I have done is

for l1=1:ll
    for j1=1:jj
      for i1=1:ii
            out=cellfun(@(y) y*w(i1,j1),x(i1,l1),'un',0)
            tot = cellfun(@(y) sum(y(:)), out,'UniformOutput', false);

              x1(i1,l1)= cellfun(@(y) sum(y(:)), x(i1,l1),'UniformOutput', false);

        end
              m(l1,j1)=cellfun(@rdivide,tot,x1(i1,l1),'UniformOutput',false)% avarege cell load

      end
  end

[Guillaume]

I presume that in your example of the matrix you meant

w =  ...

and not

w(i,j) = ...

as the latter is not valid matlab syntax. I've no idea of the format of x though. I'd have thought it'd be a column (or row) cell array, but in your code it appears to be a 2D cell array.

Each of your logical array is of size 5x2. How do you expect to multiply that with w which is of size 5x7?

[Azzi Abdelmalek]

You don't need to post all this big matrix, just post a short example, and what you need. Specify if you are using cell array.

[Aryama Mandal]

Ya I have a cell matrix example [1 0;1 0;0 1][0 1;0 1;1 0] and a matrix of 3*5. I want to multiply this cell matrix and the 3*5 matrix.

[Abhishek]

Hi, can you please specify which verison of MATLAB did you use?

Answer 1

[Aravind]

Hi @Aryama Mandal,

To convert a cell array into a regular array in MATLAB, you can use the "cell2mat" function. Once you have the regular array, you can multiply it with any matrix using the '*' operator for matrix multiplication.

Here's an example:

cellArray = {[1,0;0,1;1,1],[1,1;2,5;1,0]};
regularArray = rand(4,3); % Example matrix
productValue = cell2mat(cellArray) * regularArray;  % Perform matrix multiplication

For more details on the "cell2mat" function, you can visit: https://www.mathworks.com/help/matlab/ref/cell2mat.html. Alternatively, you can view the documentation specific to your MATLAB version by entering the following command in the MATLAB command prompt:

doc cell2mat

I hope this helps!