Hi Aristarchos,
As per my understanding, you want to extract the peak values from a 3D surface plot.
The closest workaround is to find the maximum values in the data from which the figure is generated. You can use the following functions.
- "max" function: This function can find the position of the maximum value in the data. For more information follow this link: https://in.mathworks.com/help/matlab/ref/max.html
[maxValue, maxIndex] = max(Z(:)); % Gives the maximum value and the corresponding index
[row, col] = ind2sub(size(Z), maxIndex); % Gives the row and column for the position
- "find" function: This function can find the position of all the values above a given threshold. For more information follow this link: https://in.mathworks.com/help/matlab/ref/find.html
[row, col] = find(Z > threshold); % Gives the rows and columns for the corresponding positions
peakValues = Z(sub2ind(size(Z), row, col)); % Gives the exact values
- "imregionalmax": This function to find regional maxima in the surface data. For more information follow this link: https://in.mathworks.com/help/images/ref/imregionalmax.html
binaryImage = imregionalmax(Z); % Gives a matrix indicating 1 at the positions of maximum values
[row, col] = find(binaryImage); % Gives the set of rows and columns for the corresponding positions
peakValues = Z(sub2ind(size(Z), row, col)); % Gives the exact values
"Z" is the matrix containing the surface data.
If you only have the figure and not the data, you can follow this to extract the data from the figure: https://in.mathworks.com/matlabcentral/answers/100687-how-do-i-extract-data-from-matlab-figures
I hope it helps!
