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    %% Evaluate Multiple Tall Arrays
% Use |gather| with several inputs to simultaneously evaluate several tall
% arrays.
%
% Create a tall array from an in-memory array of random integers between 1
% and 1000. Calculate the maximum and minimum values in each column.
A = tall(randi(1000,100,7))

%%
b = min(A);
c = max(A);

%%
% Use the results to determine the overall minimum and maximum values in
% the array. Collect the final result into memory.
[mnA,mxA] = gather(min(b),max(c));

%%
valRange = [mnA mxA]