Want to get the Highest maxima and Lowest minima form all local maxima and minima.

Certainly! To find the highest maxima and lowest minima from all local maxima and minima in MATLAB, you can follow these steps:

1. Identify Local Maxima and Minima:

   • Use the islocalmin and islocalmax functions to detect local minima and maxima in your data¹.
   • These functions return logical arrays where elements are 1 (true) for detected local minima or maxima.

2. Extract Values:

   • Once you have the logical arrays, you can extract the corresponding values from your data array.
   • For example, if your data is stored in a vector A, you can use indexing to get the values of local minima and maxima.

3. Highest Maxima and Lowest Minima:

   • To find the highest maxima, select the maximum value among the local maxima.
   • To find the lowest minima, select the minimum value among the local minima.

Here’s a brief example using MATLAB:

% Example data (replace with your actual data)
A = [10, 5, 8, 3, 12, 7, 15, 4];

% Detect local minima and maxima
TF_min = islocalmin(A);
TF_max = islocalmax(A);

% Extract values
local_minima = A(TF_min);
local_maxima = A(TF_max);

% Highest maxima and lowest minima
highest_maxima = max(local_maxima);
lowest_minima = min(local_minima);

disp(['Highest Maxima: ', num2str(highest_maxima)]);
disp(['Lowest Minima: ', num2str(lowest_minima)]);

Remember to replace the example data (A) with your actual dataset. This code snippet will give you the highest maxima and lowest minima from your local extrema.