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How to find the coordinate of a peak from a dataset

I have a data group.

This is the graph I am plotting using this dataset. enter image description here How do I find the coordinate of the peak value from this dataset? Anyone got a good Java algorithm for this issue?

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For this dataset, I would do the following:

  • Make the data stationary while accepting the first differences
  • Signal when data exceeds a certain threshold level. You can use fixed threshold or adaptive threshold (like this answer )

When I use the dataset from this question , for illustration purposes, I get the following in Excel:



Determination of heart rate

It should be easy to implement in Java.

Good luck!

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