How to pass the image from m-file to GUI push button callback

hi, i am developing GUI for filter program. In my GUI i used 3 push button an 2 axes. When i press the button1 error image will display on the axes1, when i press the button2 my "filter.m" file will run. After completion my "filter.m" provide me output image in some variable called 'y'. I want to take this image i.e 'y' from "filter.m" file to GUI pushbutton3 callback, so that when i press pushbutton3 i want to display the image y on the axes2. how to do this? i mean what code i should add to "filter.m file" and to GUI pushbutton3 callback program to display the image on axes2?(i have already done coding for push button1 and 2).

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

[Gowrishankar R]

thank you for your suggestion.. based on that i modified my gui program. now instead of calling m filter program in pushbutton2 callback, i copied and pasted my entire filter program in pushbutton2 callback. the code is as follows

   function pushbutton1_Callback(hObject, eventdata, handles)
  [handles.fname, handles.pname] = uigetfile('*.jpg','Select an image  analysis');
   Name=fullfile(handles.pname, handles.fname);
   I=imread(Name);
   axes(handles.axes1);
   imshow(I)
   set(handles.pushbutton2,'enable','on');
   guidata(hObject, handles);

    function pushbutton2_Callback(hObject, eventdata, handles)
    {
     ........
       160 line filter program
      y=wiener();%last line of the program
     }
    handles.myNewVariable = y;
    set(handles.pushbutton3,'enable','on');
    guidata(hObject, handles);

    function pushbutton3_Callback(hObject, eventdata, handles)

i am getting error in "set(handles.pushbutton3,'enable','on');" of pushbutton callback stating ??? Error using ==> set Invalid handle object. if i remove that line, i get error in next line what might be the problem? how to solve this?