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%% Category Counts of Categorical Vector %% % Create a 1-by-5 categorical vector. A = categorical({'plane' 'car' 'train' 'car' 'plane'}) %% % |A| has three categories, |car|, |plane|, and |train|. %% % Find the number of elements in each category of |A|. B = countcats(A) %% % The first element in |B| corresponds to the first category of |A|, which % is |car|. The second element in |B| corresponds to the second category % of |A|, which is |plane|. The third element of |B| corresponds to the % third category of |A|, which is |train|. %% % Since |A| is a row vector, |countcats| returns a row vector.