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How to find a local minimum around a point you click in a graph?

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JamJan
JamJan on 1 Oct 2020
Commented: KSSV on 1 Oct 2020
I have a lot of different graphs, where I want to find the minimal point of where the line is going up towards it's peak. I would like to do this by inserting a piece of code where I have to click somewhere in the graph (close to the point I want to find) and that it automatically selects and saves the local minimum. The same I would like to do for the maximum. How to do this and print this out in code?
Graph of what I mean (ignore the yellow dot, that should be more to the right).

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