How do I make the movmean calculate the moving average at the start- and endpoints of an array but in conjunction to each other?

Question

Michael Arvin 2022-3-16

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https://ww2.mathworks.cn/matlabcentral/answers/1672924-how-do-i-make-the-movmean-calculate-the-moving-average-at-the-start-and-endpoints-of-an-array-but-i

评论： Scott MacKenzie 2022-3-16

Currently my sample program is as following

A = [0 2 4 1 3 5 7];
M = movmean(A,[2 1])

For example, I want to find the moving average for A(7). Instead of not having value for the kf, I want the kf to consider the value of A(1) to calculate the moving average. And the same for when I want to find the moving average of A(1), it should consider the value of A(6) and A(7).

Is it possible to do so? If it is, any idea on how to do it?

Thank you very much.

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Answer 1

Scott MacKenzie 2022-3-16

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https://ww2.mathworks.cn/matlabcentral/answers/1672924-how-do-i-make-the-movmean-calculate-the-moving-average-at-the-start-and-endpoints-of-an-array-but-i#answer_919024

编辑：Scott MacKenzie 2022-3-16

在 MATLAB Online 中打开

This seems to do the trick:

A = [0 2 4 1 3 5 7];
M = movmean(A,[2 1]);
M2 = movmean([A A A],[2 1]);
n = numel(A);
M2 = M2(n+1:n+n);
format shortg
[A; M; M2]
ans = 3×7
            0            2            4            1            3            5            7
            1            2         1.75          2.5         3.25            4            5
          3.5         3.25         1.75          2.5         3.25            4         3.75