Is there any MATLAB toolbox that can find the local MAX of a piece-wise multi-variable function?

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I have a piece-wise function f(x,y,z) which is not linear necessarily. Is there any toolbox that can find the local maximums of this function in MATLAB?
Thanks

Answers (2)

Gouri Chennuru
Gouri Chennuru on 25 Sep 2020
Hi Niloufar,
You can use “islocalmin” function in order to find the local minima which returns a logical array whose elements are 1 (true) when a local minimum is detected in the corresponding element of an array, table, or timetable.
Similarly you can make use of “islocalmax” function in order to find the local maxima which returns a logical array whose elements are 1 (true) when a local maximum is detected in the corresponding element of an array, table, or timetable.
You can also use “findpeaks” returns a vector with the local maxima (peaks) of the input signal vector, data which is available in the signal processing toolbox.
Hope this Helps!

Bruno Luong
Bruno Luong on 25 Sep 2020
fmincon and friends if you have the toolbox.
  3 Comments
Walter Roberson
Walter Roberson on 1 Oct 2020
fmincon cannot handle discontinuities over the range it is testing.
You can, though, test one range at a time, if the boundaries of the ranges can reasonably be determined.

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