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%% Specify Sorting Directions for Matrix Rows % Sort a tall matrix using several columns with different sorting % directions. % % Create a 100-by-5 matrix of random integers. Convert the in-memory array % into a tall array. X = randi(10,100,5); TX = tall(X) %% % Sort |TX| using the first three columns and return the top 12 rows. % Specify the sorting direction for each column. Collect the values into % memory to view the compete results. T = topkrows(TX,12,1:3,{'descend','ascend','ascend'}) %% T12 = gather(T)