get 3D coordinate (x,y,z) of a surf plot on mouse click in App Designer

I created a surf plot in App Designer, and when I mouse click on the figure, it can display the (x,y,z) coordinate on the plot, However, I could not find a way to directly access and save x, y, z coordinate of the mouse click to variables to allow further data processing. Can someone help me with that? thank you very much.

Following is a code how I initialize my surf plot, I used UIAxe for holding my surf plot:

% initialize figure 1

app.UIAxes_X = 10:1:50;

app.UIAxes_Y = 1:0.1:3;

app.UIAxes_Z = NaN(size(app.UIAxes_Y,2),size(app.UIAxes_X,2));

app.surf_handle = surf(app.UIAxes, app.UIAxes_X, app.UIAxes_Y,app.UIAxes_Z);

[Mohammad Sami]

add this to your intialization

app.surf_handle.ButtonDownFcn = @app.yourcoordinatehandlerfunction

create a function in your app with name yourcoordinatehandlerfunction.

function yourcoordinatehandlerfunction(app,surf_handle,event)
  click_coords = event.IntersectionPoint;
end

[Yang Yang]

thank you Mohammad Sami ! Your solution works!

Just one minor question: now that I used your code, the 'dot' shown on the surf plot upon mouse-click doesn't appear anymore. This is not really important feature-wise, but it helps to give feedback to the user.

Do you know how to enable to show the 'dot'?

[Mohammad Sami]

You are probably referring to the data tip. What is the version of matlab you are using ?

[Yang Yang]

it's probably data tip.

I'm using version 2019b.