function [ y ] = moving_average( x, win_size )
    y1=filter(ones(1,win_size/2+1)/win_size,1,x);
    y2=filter(ones(1,win_size/2+1)/win_size,1,fliplr(x));
    y=y1+fliplr(y2)-(1/win_size)*x;
end

 

L = win_size/2;

yi = (1/win_size)∑(j=i-L:i+L)xj

 

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