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    %% Create Datastore for Text Data  
% Create a datastore associated with the sample file |airlinesmall.csv|.
% This file contains airline data from the years 1987 through 2008.   

%% 
% 
% To manage the import of missing data in numeric columns, use the
% |'TreatAsMissing'| name-value pair argument. In this example, specifying
% the value |'NA'| for |'TreatAsMissing'|, replaces every instance of
% |'NA'| with a |NaN| in the imported data. Where, |NaN| is the value
% specified in the |'MissingValue'| property of the datastore. 

ds = datastore('airlinesmall.csv', ...
                   'TreatAsMissing','NA') 
%%
% |datastore| creates a |TabularTextDatastore|.