Finding first 5 maxima and its consecutive minima.

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Jay Vaidya
Jay Vaidya 2020-11-19
评论： Walter Roberson 2020-12-18
I have the signal in the plot which is zoomed in a time window to show the peaks. I want to find not only the maxima (I did this using
findpeaks()
) but also it's consecutive minimas. Meaning, the first 5 maximas and the two minimas around each first 5 maxima.
I am not able to find minimas. I tried inverting the signal and using findpeaks(), but still merging it with the data of maximas in order is something that I am still not able to do. Can I find maximas and minimas using diff() or derivative rise and fall and store the positions in sequence in one flow?

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Swetha Polemoni
Swetha Polemoni 2020-11-23
编辑：Swetha Polemoni 2020-11-23
Hi Jai Vaidya,
You can use "islocalmin" to find minima.
Here is an example that uses "findpeaks" to find minima.
Hope this helps.

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