How to select best x-axis values correspond to curve knee y-axis values

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Mohsen Ali
Mohsen Ali le 28 Jan 2019
Commenté : Mohsen Ali le 28 Jan 2019
I'm plotting this curves shown below, and I want to extract the best x-axis values correspond to curve knee y-axis values. My target is , for each curve, to pick the smallest x-axis value where the y-axis values seem to start to flatten out.
see this figure.

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KSSV
KSSV le 28 Jan 2019
Try fitting a striaght line for the requrired points using polyfit and check for devaitaion of points from the line and pick the required points.
  3 commentaires
KSSV
KSSV le 28 Jan 2019
Provide data and specify your region points manually....
Mohsen Ali
Mohsen Ali le 28 Jan 2019
Oh,
I did this manually, I want to do it dynamically such that we can pick the smallest X value for each curve at the position the curve starts to be flatten out.
Could you help me according to my figure above?

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