how to count unique elements of a cell in matlab?

Question

I want to count unique elements of a cell array in Matlab. How can I do this? Thank you.

c = {\'a\', \'b\', \'c\', \'a\'};
% count unique elements, return th         


        

Answer 1

Check out count_unique on the file exchange. It uses accumarray or sort depending upon which is the most appropriate. It will also check for nans/infs.