+
−function g_unitValCallback(hObject, varargin)
+
−   
+
−   global params
+
−   
+
−   currParamIndex = get(hObject,'UserData');
+
−   oldUnit = char(params.params(currParamIndex).val);
+
−   oldUnit = oldUnit(2:end-1);
+
−   newUnit = strrep(get(hObject,'String'),'''','');
+
−   try
+
−      params = pset(params,params.params(currParamIndex).key,unit(newUnit));
+
−      set(hObject,'String',['''',newUnit,'''']);
+
−   catch
+
−      set(hObject,'String',['''',oldUnit,'''']);
+
−      return;
+
−   end
+
−   set(findobj('Tag','apply'),'Enable','on');
+
−   set(findobj('Tag','undo'),'Enable','on');
+
−   
+
−end