How to find specific changes in my curve?

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Faezeh Manesh
Faezeh Manesh on 2 Oct 2019
Commented: Angelavtc on 3 Nov 2020
Hello everyone,
Actually, I have a curve as bellow. I am trying to find theb red points in my curve where there are sort of bumps or shoulders in my curve. I don't know how I can find them. I know that there are not peaks. maybe I should look for a function to find change in slope. dsc.jpg
  1 Comment
Adam Danz
Adam Danz on 2 Oct 2019
Some of those "peaks" may be very difficult to capture but I'd start with findpeaks().

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Answers (2)

Ajay Kumar
Ajay Kumar on 2 Oct 2019
doc ischange
  1 Comment
Faezeh Manesh
Faezeh Manesh on 2 Oct 2019
Actually, ischange doesn't solve my problem

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Faezeh Manesh
Faezeh Manesh on 2 Oct 2019
Can anyone help me how I can calculate the slope of my curve at each point?
  1 Comment
Angelavtc
Angelavtc on 3 Nov 2020
hey, take a look on this answer:
https://www.mathworks.com/matlabcentral/answers/515523-second-derivative-from-a-smoothing-spline-fit?s_tid=srchtitle

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