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

indexinglogical indexingMATLAB

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.

Best Answer

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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