How to create a counter to add and minus?

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Kwan Zhao Jie
Kwan Zhao Jie 2018-3-7
编辑： Kwan Zhao Jie 2018-3-7
Im creating a simple counter which helps to add on one button and subtracts when pressing another button. I have done abit of research on this website previously and i found this code. but when i try and change the counter to minus. it doesnt work. Im using MATLAB R2013b GUIDE.
function nurse_Callback(hObject, eventdata, handles)
counter = get(hObject, 'UserData') + 1;
set(hObject, 'UserData', counter);
set(handles.Impt, 'String', sprintf('Number of Nurses currently: %d\n', counter));

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Image Analyst
Image Analyst 2018-3-7
Maybe try calling guidata() at the end.
  1 个评论
Kwan Zhao Jie
Kwan Zhao Jie 2018-3-7
编辑：Kwan Zhao Jie 2018-3-7
For minus should i. btw i got the set(handles.text8,'string','0') in the opening function alr.
counter = get(hObject, 'UserData') - 1;
set(hObject, 'UserData', counter);
set(handles.Impt, 'String', sprintf('Number of Nurses currently: %d\n', counter));
guidata()

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