Moving Average using a for loop

Question

Lisa Justin 2014-4-22

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/126669-moving-average-using-a-for-loop

编辑： Jan 2014-4-22

Hi, How can I compute the moving average using a for loop and without using convolution (i.e conv()) or the filter function (i.e filter())?

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Jan 2014-4-22

If this is a homework question, and it does sound like it is one, please state this explicitly. Then show us, what you have tried so far and ask a specific question. We are not going to solve your homework.

Jan 2014-4-22

Did you try anything to solve this problem by your own? What about asking your favorite internet search engine for Matlab code for a moving average? You'd find many many solutions in the FileExchange.

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Answer 1

Star Strider 2014-4-22

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/126669-moving-average-using-a-for-loop#answer_134163

在 MATLAB Online 中打开

This seems to work:

data = rand(1,50);                          % Data
Dlen = length(data);
fltr = ones(1,5);                           % Filter
Flen = length(fltr);
datax = [data ones(1,Flen)*mean(data)];     % Pad ‘data’ vector with ones*mean(data)
mavg = [];
for k1 = 1:(Dlen)
    mavg = [mavg (fltr * datax(k1:k1+Flen-1)')/Flen];
end
figure(1)
plot([1:Dlen], data)
hold on
plot([1:Dlen], mavg, '-r')
hold off
grid