%% Centered Moving Standard Deviation of Vector
% Compute the three-point centered moving standard deviation of a row vector. When there are fewer than three elements in the window at the endpoints, take the standard deviation over the elements that are available.

A = [4 8 6 -1 -2 -3 -1 3 4 5];
M = movstd(A,3)

% Copyright 2012 The MathWorks, Inc.