self.choice1.SetSelection(self.paramgraph['what'])
self.choice2.SetSelection(self.paramgraph['qui'])
self.spin_chi.SetValue(self.paramgraph['select_nb'])
self.choice1.SetSelection(self.paramgraph['what'])
self.choice2.SetSelection(self.paramgraph['qui'])
self.spin_chi.SetValue(self.paramgraph['select_nb'])