How to replace findpeaks() with another function

Hi to all,

I use findpeaks function in my code to calculate the four maximum values of a fft function.

I use it in this way:

[maxpeaks, idx] = findpeaks(10*log10(psdx),'MinPeakDistance',195,'NPeaks',4,'MinPeakHeight', -Inf, 'SortStr','descend')

The problem is that I need to run the code in a Matlab version which doesn't have the Signal Processing Toolbox. Is there any solution to write a similar function without the need of the SP Toolbox?

Thank you!

Answer 1

[sloppydisk]

https://nl.mathworks.com/matlabcentral/fileexchange?term=peak+find

Any of these options on the file exchange might help you.

Answer 2

[Star Strider]

If the MATLAB version is R2017b or later, the islocalmax (link) function is likely the best option.

[marcusbarnet]

do you know if it works also on R2017a?

[Star Strider]

Unfortunately, it won’t. It was introduced in R2017b.