How to place a marker on a 3D surface plot

I have a 3D surface plot for a function, and I need to place a marker on this plot at the maximum and minimum values within my range/domain. I have no idea how to do it and I really struggle to find what I am looking for in matlab help

Answer 1

[Mike Garrity]

Consider the following example:

[x,y,z] = peaks;
surf(x,y,z)
hold on
[~,i] = max(z(:));
h = scatter3(x(i),y(i),z(i),'filled');
h.SizeData = 150;
[~,i] = min(z(:));
h = scatter3(x(i),y(i),z(i),'filled');
h.SizeData = 150;
hold off

Does that make sense?

The 2nd arg of the min/max commands tells you the index of the element that is the min or max. You can use that index to get the X, Y, and Z coordinate for the surface.

[Jared Salloum]

Thanks Mike, the scatter3 function is what I needed. I already had values and co ordinates for maximums and minimums to display to the user when they called the function I wrote, I just needed a way to pin point a marker on my surface plot, thank you. As a follow up to this, is there a way to include a caption on the marker? thanks again