How to assign the first element of each cell in a cell aray using a matrix

Question

xiaojuezi 2022-8-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1784435-how-to-assign-the-first-element-of-each-cell-in-a-cell-aray-using-a-matrix

回答： David Hill 2022-8-23

Hi

I have a cell array A with size m x n, where each cell contains a vector of random size. Now I would like to assign the first element of a cell using a matrix B of size m x n. I tried with

B = num2cell(B);
A{:,1} = B{:};

However, the complier complains that "Consider using comma-separated list assignment.".

Is there a way to achieve this goal?

Thank you very much!

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Answer 1

David Hill 2022-8-23

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1784435-how-to-assign-the-first-element-of-each-cell-in-a-cell-aray-using-a-matrix#answer_1031585

在 MATLAB Online 中打开

for k=1:10
    for m=1:20
        A{k,m}=randi(10,1,randi(15));%generate sample A cell array
    end
end
B=zeros(size(A));
for k=1:numel(A)
    B(k)=A{k}(1);%assign first element of arrays in A to B.
end