How to multiply a cell array with a matrix
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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
4 个评论
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
2015-6-5
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
2015-6-5
Abhishek
2025-3-3
Hi, can you please specify which verison of MATLAB did you use?
回答（1 个）
Aravind
2025-3-3
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!
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2015-6-5
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