%% Moving Variance of Vector with NaN Elements
% Compute the three-point centered moving variance of a row vector containing two NaN elements.

A = [4 8 NaN -1 -2 -3 NaN 3 4 5];
M = movvar(A,3)

%
% Recalculate the variance, but omit the NaN values. When movvar discards NaN elements, it takes the variance over the remaining elements in the window.

M = movvar(A,3,'omitnan')

% Copyright 2012 The MathWorks, Inc.