image disappears when the button is not clicked

Hello,

I make a simple GUI on matlab with the button, but the image only appears when i click on the button, and the image disappears when i don't click on the button, there is only black image as the background.

Please help me in out from this error. Thanks

[Walter Roberson]

Please show the parts of your code that have to do with showing the image.

[Image Analyst]

What error? It seems like it's operating like it's supposed to. It starts with a black image window, then when you click a button you display the image. Isn't that what you wanted? What is the error message? http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[tedy]

this is the parts of code

function test_Callback(hObject, eventdata, handles)
% hObject    handle to ekstraksiciri (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

crop=handles.crop;
axes(handles.axes1);

image=takepicture(crop);
axes(handles.axes2);
imshow(image);

handles.image=image;
guidata(hObject, handles);

first appearance http://i1338.photobucket.com/albums/o690/Tedy_Frank/image2_zps4efdcc87.jpg the result should be http://i1338.photobucket.com/albums/o690/Tedy_Frank/img_zps0e7f5593.jpg

the white line appears very quickly when it's clicked and then disappear again. it just like once click->once appears then disappear, so on. so,it just looked the black background only http://i1338.photobucket.com/albums/o690/Tedy_Frank/img2_zps80d6e87f.jpg

there is no error message, I am so confused

[Walter Roberson]

Using "image" as a variable name is going to cause you problems.

What white line? Your code does not have any lines.

Are your two axes overlapping ?

[tedy]

"takepicture" is a function that result the white line like that. there is no error with the function, i've checked out the function separately,and it works. so, i think there is no axes overlapping.

[Walter Roberson]

perhaps you want to add

drawnow()

after the takepicture() call.

[tedy]

it doesn't work. still the same

[tedy]

when i add drawnow(), the output give the overlapping image. when i click the button, it display a image and when i click again,it also display image that overlapping each other,so on.

[Walter Roberson]

At the moment we have no reason to know that the axes are not overlapped, and no reason to know that "hold" is not on on the axes.

[Jan]

@tedy: Please edit the original question and insert enough details to allow an answer. Currently the readers have to guess to many details. Thanks.

[Image Analyst]

Can you upload a zip with the fig file, the m-file, and the images?