Replace elements of each matrix within a cell array

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Matthew McIlroy
Matthew McIlroy 2023-2-17
回答： Bhavana Ravirala 2023-2-17
I have a cell array with matrices in each cell and I want to edit the same elements in each matrix. How do I do this?
The code below shows how it can be created using a for loop but I want to vectorise it if possible where nD is a constant and nn is a vector and changes for each cell
G=zeros(4,nD*nn);
G([1 3],1:nD:end)=1;
G([4 2],2:nD:end)=1;
  1 个评论
the cyclist
the cyclist 2023-2-17
Your example is confusing to me, because it shows neither a cell array nor a for loop.
Can you give a small but representative example of the input and output you are expecting? It might also be helpful to upload your cell array here, in a MAT file. You can use the paper clip icon in the INSERT section of the toolbar.

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采纳的回答

Bhavana Ravirala
Bhavana Ravirala 2023-2-17
Hi,
I understand that you want to vectorize cell fun assignment.
You can use the ‘cellfun’ to apply a function to each element of the cell array.
nD = 10;
nn = 10;
M = cell(100,1);
for i=1:100
M{i}=zeros(4,nD*nn);
end
disp(M{1});
M = cellfun(@(x)temp(x), M, 'UniformOutput',false);
disp(M{1});
If you were looking to improve the performance of the operation, you can use the parfor loop.
For more information, please refer the below link.
https://www.mathworks.com/help/matlab/ref/cellfun.html

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