Too may input arguments

Error using SampleGUImain>pushbutton2_Callback Too many input arguments.

Code:

% --- Executes on button press in pushbutton2.

function pushbutton2_Callback(handles)

imM=im>80;

axes(handles.axes2)

imshow(imM);

title('Threshold Image');

Answer 1

[Image Analyst]

Somehow you got rid of the required input arguments, which should be hObject, eventdata, handles

To fix:

function pushbutton2_Callback(hObject, eventdata, handles)

[Hazel Sialongo]

I put that on my code but I got another error.

Error:

Undefined function or variable 'im'.

[Image Analyst]

Of course. I knew you'd find that out. All variables are local unless you make them not local. So where is im defined in that function? It's not. Where did you define it?

See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F for ways you can share variables between functions.

[Hazel Sialongo]

I used global im but it has no image output.

[Image Analyst]

Global just declares that the variable is able to be "seen" by that function. It doesn't really have "an output" per se, it just makes the variable able to be seen. Of course if you've never assigned that variable ever before in any function, then it will be undefined. Show me the function where you first assigned a value to im.