MATLAB: How to use local variable from GUI

guilocal variable

I created subroutine for my code named ' checkbox3' including 3 checkboxes. If I check a checkbox, it will return 1 and if not, it will return 0. For example, If I check the first and third box, I want it to return chk1=1;chk2=0;chk3=1. I really want these variables for my next step. I tried to use assignin function but it went to base workspace instead of my working workspace and I can't use these variable for my next step. So please give me some advice for this problem. Thank you very much! This is my code.
chk1=0;chk2=0;chk3=0;
assignin('base','chk1',chk1);assignin('base','chk2',chk2);… assignin('base','chk3',chk3);
% — Executes on button press in checkbox1.
function chk1=checkbox1_Callback(hObject, eventdata, handles)
chk1=get(hObject,'Value');
assignin('base','chk1',chk1);
% — Executes on button press in checkbox2.
function chk2=checkbox2_Callback(hObject, eventdata, handles)
chk2=get(hObject,'Value');
assignin('base','chk2',chk2);
% — Executes on button press in checkbox3.
function chk3=checkbox3_Callback(hObject, eventdata, handles)
chk3=get(hObject,'Value');
assignin('base','chk3',chk3);
function pushbutton1_Callback(hObject, eventdata, handles)
close all

Best Answer

All of that is unnecessary. Just check the values when you need them, or worst case, have a function to retrieve all of their values, like this:
function checkboxValues = GetCheckBoxValues(handles)
  checkboxValues (1) = get(handles.checkbox1, 'value');
  checkboxValues (2) = get(handles.checkbox2, 'value');
  checkboxValues (3) = get(handles.checkbox3, 'value');
Then just call that function whenever you need to get, use, or check the values:
checkboxValues = GetCheckBoxValues(handles);
No need for all of that complicated stuff you were doing in each individual callback.
Related Question