self.plotter.set_x_label('Time', 's')
self.plotter.set_x_grid(self.get_t_min(), self.get_t_max(), self[T_PER_DIV_KEY], True)
#update the y axis
self.plotter.set_x_label('Time', 's')
self.plotter.set_x_grid(self.get_t_min(), self.get_t_max(), self[T_PER_DIV_KEY], True)
#update the y axis