How do I compare two different cell arrays whose elements are NOT strings?

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Daniel 2015-7-5

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回答： Image Analyst 2015-7-5

I have two cell arrays, A and B, each of which is filled with matrices of differing values. If I want all elements in B that are not in A, how would I find that? (say A{1,1} = B{1,1} but A{2,1} ~= B{2,1}, how could I have matlab return this?) I tried using setdiff but matlab returned an error saying that setdiff only deals with cell arrays of strings.

I need to use a cell array to save these matrices as they are matrices of different sizes.

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Answer 1

Image Analyst 2015-7-5

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https://ww2.mathworks.cn/matlabcentral/answers/228471-how-do-i-compare-two-different-cell-arrays-whose-elements-are-not-strings#answer_185061

在 MATLAB Online 中打开

You can loop over corresponding cells and use isequal to check:

if isequal(A{rowa, cola}, B{rowb, colb})
  % Cell contents are equal.
else
  % Cell contents are not equal.
end

Of course rowa might be the same as rowb as you seem to indicate, but it might not be, particularly if A and B don't have the same number of cells in them. It just depends on what cell of A you're comparing to what cell of B.

Now take some action depending on whether the cell contents are equal or not.