MATLAB: How to clear GUI variables

Question

Hi,

I'm trying to clear GUI variables. From what I understand, each callback function has its own workspace and separate global workspace. I'd like to clear a specific callback variables with a push button. (Callback function is blockremover_callback, I'd like to reset with a push button).

Thanks!

function clearscreen_Callback(hObject, eventdata, handles)
global xy h binary 
%evalin('base','clear h')
clear blockremover_callback 
xy = []; 
h = []; 
binary = []; 
%evalin('base','clear all');
cla;

Answer 1

You can clear global variables with clear global.

clear global xy;
clear global h;
clear global binary;

After you clear them, if you need them you need to declare them again:

global xy;
global h;
global binary;

There is no need to clear local variables as they vanish once the function exits.