push button callback error

I have created a GUI window with a push button for forward kinematics. but when i hit the callback button. the figure won't appear. and i states:

Error in

matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)RRR_ROBOT('buttonforward_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating UIControl Callback.

[Sahithi Kanumarlapudi]

Could you provide the snippet where you are assigning the call back

Answer 1

[Geoff Hayes]

Siti - it looks like you are using GUIDE for your GUI and, for your callback, the comments indicate that there should be three input parameters to your function signature...but the handles parameter isn't there. Try re-writing your callback signature as

function buttonForward_Callback(hObject, eventdata, handles)

and then re-run your code. Note that even the error message

matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)RRR_ROBOT('buttonforward_Callback',hObject,eventdata,guidata(hObject))

is indicating that three input parameters (hObject,eventdata,guidata(hObject)) are passed to this function.