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How to get a specified number of local maxima?

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Chinwe Orie
Chinwe Orie 2018-7-14
编辑： Mohammad Mahmudul Hasan Fahome 2018-9-30
I have a signal and I only want the top two or three local maxima, I don't want the 5000 maxima that the findpeaks() function gives me. Is there a way to get this? Thanks.

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Mohammad Mahmudul Hasan Fahome
编辑：Mohammad Mahmudul Hasan Fahome 2018-9-30
You can use this function. I used this for taking top 2 frequency spectra maxima. You can find the min with the same logic.
**Update:Replace max(j) with val(j) in the function

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