Extraction of unique arrays in a cell

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Assume there is a cell of the size 1 by N. Each cell contains an array. Some of the arrays are equal. How can I remove duplicate ones? Is there a "unique" function for cells?

Accepted Answer

Taylor
Taylor on 19 Sep 2024
One possible approach:
% Assume 'cellArray' is your 1xN cell array containing arrays
cellArray = {
[1, 2, 3],
[4, 5, 6],
[1, 2, 3], % Duplicate
[7, 8, 9],
[4, 5, 6] % Duplicate
};
% Convert each cell's array to a string representation
arrayStrings = cellfun(@mat2str, cellArray, 'UniformOutput', false);
% Find unique string representations and their indices
[~, uniqueIndices] = unique(arrayStrings, 'stable');
% Use the unique indices to create a cell array without duplicates
uniqueCellArray = cellArray(uniqueIndices);
% Display the result
disp('Cell array with duplicates removed:');
disp(uniqueCellArray);

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