How to clear GUI variables?
4 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
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;
0 Commenti
Risposta accettata
Image Analyst
il 18 Dic 2013
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.
3 Commenti
Image Analyst
il 18 Dic 2013
Like I said in your other question, if it thinks there is more than one image in an axes, then call cla('reset') before calling imshow() so that the axes is emptied before loading an image into it.
Più risposte (1)
Walter Roberson
il 17 Dic 2013
No, there is only one global workspace.
Each function may have its own persistent variables. Those variables may be cleared by using "clear" together with the function name.
Vedere anche
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!