How to find the proper peaks in a graph?

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David Hernandez 2017-10-11

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https://ww2.mathworks.cn/matlabcentral/answers/360793-how-to-find-the-proper-peaks-in-a-graph

评论： Prashant Arora 2017-10-18

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So, I need to find peaks but I haven't found a good 'algorithm' or method to find them, for instance I have the following graph, so you can see that Peak 1 is not covered and I probably don't want peak 2 and 3 is not part of the peaks.

I'm using findpeaks with MinPeakDistance of 150 for this example.

If I use Threshold, for some reason is not working as expected and I need to input a very small number to see something happening, and that number is .001, and that is giving me almost half the peaks which I don't want to.

I know this question is not clear and reason why is because I don't really know how to calculate the peaks that I want.

Hope it makes sense and someone can illuminate me.