matlab app designer axes buttondownfcn

The ButtonDownFcn property in MATLAB App Designer allows you to specify a callback function that executes when a user clicks on an axes object. Here's an example of how you can use it:

function app = MyApp
    % Create the app
    app = matlab.apps.AppBase;

    % Create the axes
    app.UIAxes = uiaxes(app);

    % Set the ButtonDownFcn property
    app.UIAxes.ButtonDownFcn = @axesClicked;

    % Callback function for when the axes is clicked
    function axesClicked(src, event)
        disp('Axes clicked!');

In this example, the ButtonDownFcn property of the UIAxes object is set to the axesClicked function. When the user clicks on the axes, the axesClicked function is executed. The function displays a message indicating that the axes was clicked, as well as information about the source and event objects.

Please let me know if you need any further assistance!