Help with finding highs
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Hello! My signal goes smoothly then at some stage it rises sharply and for a long time keeps this tendency
I am trying to use the findpeaks function to find this indicator i.e. when the signal goes up but nothing works for me
Data=[20 21 20 21 21 90 92 93 90 93 90 59 30]
4 Comments
Adam
on 20 Aug 2019
I don't know what you are doing with x and y. Data is a row vector as you showed it in the question so x and y would just be the first two elements, as scalars.
[peaks, locations] = findpeaks( Data );
would give you the peak values and their respective indices inito the Data matrix.
Answers (1)
Steven Lord
on 20 Aug 2019
Do you want to find a local maximum? If so see the islocalmax function.
Do you want to find a place where your data changes significantly? If so see the ischange function.
Do you want to find, clean, or remove the outliers? If so see the isoutlier, filloutliers, and/or rmoutliers functions.
All the functions I mentioned are in the Preprocessing Data section of the documentation. If none of them do exactly what you want, perhaps you can combine them with other data preprocessing functions to achieve your goal.
3 Comments
Steven Lord
on 20 Aug 2019
ischange was introduced in release R2017b. Are you using an earlier release?
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