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    %% Moving Minimum of Vector with |NaN| Elements
% Compute the three-point centered moving minimum of a row
% vector containing two |NaN| elements.
A = [4 8 NaN -1 -2 -3 NaN 3 4 5];
M = movmin(A,3)

%%
% Recalculate the minimum, but include the |NaN| values.  When taking the
% minimum over a group of elements containing at least one |NaN| value,
% |movmin| returns |NaN|.
M = movmin(A,3,'includenan')