removing spikes from test data.
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I was trying to remove the spikes from the test data. I used the medfilt1 method like below: Data_B = medfilt1(Data,7); the left is original data, the right is after process. but it did not work very well. other method like filloutliers also has been tried. I also tried to use the medfilt1 twice, but it's still nearly the same. what I want is to figure out the trend of the test data, the processed data has already showed the trending but there were still some spikes in the figure which is annoying. how should I do to remove the spikes? thanks in advance:)
2 个评论
Greg Dionne
2018-9-24
Would you be willing to post your data?
Sher Akbar
2019-12-30
search literature for this purpose... basically we dont remove spikes we do replace them with the normal values.
回答（2 个）
Star Strider
2018-9-19
1 个投票
If you have R2017a or later, experiment with the isoutlier (link) and filloutliers (link) functions to determine if they will do what you want.
Arihant Sureka
2018-9-19
Hi
Maybe you can refer to this link:
<https://in.mathworks.com/help/curvefit/smooth.html Data Smooth>
1 个评论
Muhammad Waqar
2020-9-16
Smooth is not recommended. It is because Smooth function will also damage the physical features of the signal.
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2020-9-16
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