2D logical indexing of 1D array for resulting 2D array

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Alex
Alex 2021-1-22
编辑： Jan 2021-1-22
I am trying to extract the values of a 1D cell array based on a 2D logical array. Something like this:
A = {'A';
'B';
'C'};
ind = logical([1, 1; 0 0; 0 1]);
B = {'A', 'A';
[], [];
[], 'C'};
Unfortunately it's not as simple as
B = A(ind)
but I can't think of a way to do it without a cumbersome loop.

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采纳的回答

Jan
Jan 2021-1-22
编辑：Jan 2021-1-22
A = {'A';
'B';
'C'};
ind = logical([1, 1; 0 0; 0 1]);
indD = double(ind) .* (1:numel(A)).'; % Auto-expand, >= R2016b
B = cell(size(ind));
B(ind) = A(indD(ind))

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