Hii Joshua, I think, you are trying to show an error dialog when only one of the radio buttons is pushed.
To acheive this, you can keep a global count variable and add 1 to the count when ever a button is pushed and make the count zero at the end of the function.If the count is 1,then you can raise an error dialog and then reset the count at the end.
The code may look like this :
count=0; %Global Variable
function togglebutton3_Callback(hObject, eventdata, handles)
if get(handles.radiobutton1,'Value') == 1
count=count+1;
end
...
...%write conditions as per requirement
count=0; %resetting the count value
end
I hope this helps you.
