Replace multiple matrix in a cell array based on condition

Question

Song JL 2020-2-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/503738-replace-multiple-matrix-in-a-cell-array-based-on-condition

编辑： Stephen23 2020-2-5

采纳的回答： Stephen23

在 MATLAB Online 中打开

need a help in replacing matrix in cell array

if i have cell array and matrix like this

A = {[1,1,2; 2,2,3];[1,3,4; 9,6,8];[1,7,8; 2,3,4];[1,1,4; 8,6,5]};
B = [2,2,2; 3,3,3];

when A has a value more than 5, it should be replace with B

then, the result have to be like this

result = {[1,1,2; 2,2,3];[2,2,2; 3,3,3];[2,2,2; 3,3,3];[2,2,2; 3,3,3]};

i have tried this, but it still gives me an error

rep = cellfun(@(c) any(any(c>5)), A, 'UniformOutput', true);
A{rep} = B;

Expected one output from a curly brace or dot indexing expression, but there were 2 results.

Any idea ?

Thanks in advance..

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Answer 1

Stephen23 2020-2-5

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/503738-replace-multiple-matrix-in-a-cell-array-based-on-condition#answer_413887

编辑：Stephen23 2020-2-5

在 MATLAB Online 中打开

You were almost there, just one small change is required:

To assign to an unknown number of LHS elements the RHS must be scalar. In your case you want to assign cells themselves so the simplest is to make the RHS one scalar cell (not a non-scalar numeric).

>> idx = cellfun(@(c) any(c(:)>5), A); % default UniformOutput = True
>> A(idx) = {B}; % unknown number of cells = scalar cell
>> A{:}
ans =
     1     1     2
     2     2     3
ans =
     2     2     2
     3     3     3
ans =
     2     2     2
     3     3     3
ans =
     2     2     2
     3     3     3