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%% Retrieve Specified Number of Rows in Tall Array % Preview the first 20 rows of data in a tall table. % % Create a tall table for the |airlinesmall.csv| data set. Select a subset % of the variables to work with, and treat |'NA'| values as missing data so % that |datastore| replaces them with |NaN| values. Use |head| to view the % first 20 rows of data. varnames = {'Year','Month','ArrDelay','DepDelay','UniqueCarrier'}; ds = datastore('airlinesmall.csv','TreatAsMissing','NA',... 'SelectedVariableNames',varnames); T = tall(ds) %% tt = head(T,20) %% % Collect the results into memory to view the data. t20 = gather(tt)