Matlab Error, Non-existent field, axes properties.
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
hello,...
i've got some home work n' i'm working with 2 axes (axes1, axes2), 2 push button (browse1, browse2) made by guide... when i push the button, i want to put an image to each axes (browse1 for axes1, browse2 for axes2) i've done it but i got some error
here's my code:
% --- Executes on button press in browse1.
function browse1_Callback(hObject, eventdata, handles)
[FileName,PathName] = uigetfile('*.jpg;*.png;*.tiff;','Select file');
if(FileName~=0)
axes(handles.axes1)
handles.gambar=imread(fullfile(PathName, FileName));
image(handles.gambar)
axis off
else
return
end
guidata(hObject, handles);
% --- Executes on button press in browse2.
function browse2_Callback(hObject, eventdata, handles)
[FileName,PathName] = uigetfile('*.jpg;*.png;*.tiff;','Select file');
if (FileName~=0
axes(handles.axes2)
handles.gambar=imread(fullfile(PathName, FileName));
image(handles.gambar)
axis off
else
return
end
guidata(hObject, handles);
and the generated error:
??? Reference to non-existent field 'axes2'.
error in line 107 => axes(handles.axes2)
i thought, it's because handles cannot read existence of axes2, i have checked it in property insp. but i still don't know what is the problem.... is there some properties of axes2 i missed??
0 Kommentare
Akzeptierte Antwort
Chandra Kurniawan
am 14 Jan. 2012
Hi,
in the pushbutton1 callback you should write :
function browse1_Callback(hObject, eventdata, handles)
handles.output = hObject;
[FileName,PathName] = uigetfile('*.jpg;*.png;*.tiff;','Select file');
if(FileName~=0)
axes(handles.axes1)
handles.gambar=imread(fullfile(PathName, FileName));
image(handles.gambar)
axis off
else
return
end
guidata(hObject, handles);
in the pushbutton2 callback you should write :
function browse2_Callback(hObject, eventdata, handles)
handles.output = hObject;
[FileName,PathName] = uigetfile('*.jpg;*.png;*.tiff;','Select file');
if (FileName~=0)
axes(handles.axes2)
handles.gambar=imread(fullfile(PathName, FileName));
image(handles.gambar)
axis off
else
return
end
guidata(hObject, handles);
5 Kommentare
Weitere Antworten (1)
Jan
am 14 Jan. 2012
Obviously axes2 is not a field of handles. Most likely you've created the button's callback before the axes2-object. Then updating the handles dynamically would be a solution:
% --- Executes on button press in browse2.
function browse2_Callback(hObject, eventdata, handles)
[FileName,PathName] = uigetfile('*.jpg;*.png;*.tiff;','Select file');
handles = guidata(hObject); % Update
if ischar(FileName) % Better than FileName~=0 !
axes(handles.axes2)
...
"if FileName~=0" works, but is not smart: Internally this is equivalent to:
if all(FileName ~= char(0)) & ~isempty(FileName)
So better use "ischar(FileName)" or "isequal(FileName, 0)".
3 Kommentare
Walter Roberson
am 14 Jan. 2012
It appears that randy is using GUIDE. The callbacks generated by GUIDE automatically fetch the most-recently-updated version of guidata, so Jan's guidata() solution would not be expected to help.
We have not seen enough code to know that axes2 really exists.
Siehe auch
Kategorien
Mehr zu Interactive Control and Callbacks finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!