MATLAB: Calculator by matlab sin, cos, tan

MATLABmatlab gui

Hi I have made a new GUI in matlab for a calculator. The calculator is fully working exept there is an error with the sin, cos and tan buttons. If i click one of them i get this error:
Error in @(hObject,eventdata)calculator('pushbutton13_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating uicontrol Callback
I think i made an error in the pushbutton code, just not sure whats the error
I have attached the m file for the calculator pluss the figure.

Best Answer

You wrote the sin. cos and tan funcitons beggining with with capital letters:
Sin, Cos and Tan in your code.
Write the functions like this:
% --- Executes on button press in Tan.
function Tan_Callback(hObject, eventdata, handles)
% hObject    handle to Tan (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB


% handles    structure with handles and user data (see GUIDATA)


textstring = get(handles.text1,'string');
textstring = strcat(textstring,'tan')
set(handles.text1,'string',textstring);
% --- Executes on button press in Sin.
function Sin_Callback(hObject, eventdata, handles)
% hObject    handle to Sin (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textstring = get(handles.text1,'string');
textstring = strcat(textstring,'sin')
set(handles.text1,'string',textstring);
% --- Executes on button press in Cos.
function Cos_Callback(hObject, eventdata, handles)
% hObject    handle to Cos (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textstring = get(handles.text1,'string');
textstring = strcat(textstring,'cos')
set(handles.text1,'string',textstring);
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