Save variables in gui
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Dear, i'm strubling with the problem to save variables in a gui. I have an edit text with nothing in and when you type a number in it, i have to use this double in another widget or another function. I wrote http://matlab.wikia.com/wiki/FAQ?cb=4562#How_can_I_share_data_between_callback_functions_in_my_GUI.3F and tried the getappdata manner. So my callback function is like:
function ls_Callback(hObject, eventdata, handles)
% hObject handle to ls (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
ls = str2double(get(hObject,'String')) %to convert to double
ls = getappdata(handles.ls ,'ls') % so i can save it?
save(sino,'ls') % gives fualt...
and to use it in another function i tried
sinopara = load(sino);
ls = sinopara.ls;
But it doesnt work, please please a understandeble solution :) thx in advance
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Walter Roberson
le 6 Mai 2011
function ls_Callback(hObject, eventdata, handles)
% hObject handle to ls (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
ls = str2double(get(hObject,'String')) %to convert to double
handles.ls = ls;
guidata(handles);
Then in any other callback or function that already had handles being passed to it, handles.ls would have the value. If you need the value someplace that does not have handles being passed to it, then
handles = guidata(YourFigureNumber);
and then use handles.ls
2 commentaires
Walter Roberson
le 6 Mai 2011
By the way: the first thing that has to be passed to save() is a file name, but in your sample code you are passing an undefined variable.
save('sino','ls')
would have gotten you further, but your getappdata() call is incorrect so you probably would have ended up saving an empty matrix.
Jan
le 13 Fév 2018
@Walter: Replace:
guidata(handles)
by
guidata(hObject, handles)
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