How to load .mat into GUI

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Edward P
Edward P 2011-11-8
Hi everyone, It occurs an error that i can't understand why.
%load button
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton3 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
[filename,pathname] = uigetfile({'*.mat';'*.*'}, 'Load');
file_load = fullfile(pathname,filename);
set(handles.pushbutton1,'enable','on');
load(file_load);
imshow(handles.E,'Parent',handles.axes3);
imshow(handles.D,'Parent',handles.axes4);
guidata(hObject, handles);
the error is:
??? Error using ==> imshow>validateParent at 307
HAX must be a valid axes handle.
Error in ==> imshow at 221
validateParent(specific_args.Parent)
Error in ==> tent>pushbutton3_Callback at 102
imshow(handles.E,'Parent',handles.axes3);
Error in ==> gui_mainfcn at 96
feval(varargin{:});
Error in ==> tent at 43
gui_mainfcn(gui_State, varargin{:});
Error in ==>
@(hObject,eventdata)tent('pushbutton3_Callback',hObject,eventdata,guidata(hObject))
??? Error while evaluating uicontrol Callback
What i have made wrong? I believe that my workspace is successfully loaded.

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采纳的回答

Titus Edelhofer
Titus Edelhofer 2011-11-9
Hi Edward,
hmm, you load the handles? That will probably fail because each time you start your GUI, handles.axes3 and handles.axes4 will be different. I would do the following instead
im = load(file_load);
handles.D = im.handles.D;
handles.E = im.handles.E;
imshow(handles.E,'Parent',handles.axes3);
imshow(handles.D,'Parent',handles.axes4);
This way you leave your (other) handles untouched ...
Titus

更多回答（2 个）

Titus Edelhofer
Titus Edelhofer 2011-11-8
Hi,
hmm, I am wondering why it is
imshow(handles.E,'Parent',handles.axes3);
in the error message but
imshow(handles.image1,'Parent',handles.axes3);
in the code. But apart from that: what variable do you read from the .mat file? And where do you use it? I can't see it in the code ...
Titus
  1 个评论
Edward P
Edward P 2011-11-8
My fault! i used image1 to make easier to understand.
The point is:load some images (E and D) that i've once invoked to my program, and plot those images on axes3 and axes4. This plot is correct because i've have already used this code.

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Naz
Naz 2011-11-8
handles.E=load(file_load);
  2 个评论
Edward P
Edward P 2011-11-8
load(file_load), loads my handles already.
Naz
Naz 2011-11-8
hm... this should work. And you are sure you have your axes tagged as axes3 and axes4?

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