def cla(self):
        """Identical to Axes.cla (This docstring is overwritten)."""
        Axes.cla(self)

        # Set grid defaults...
        self.set_longitude_grid(10)
        self.set_latitude_grid(10)
        self.set_longitude_grid_ends(80)

        # Hide all ticks and tick labels for the "native" lon and lat axes
        self.xaxis.set_minor_locator(NullLocator())
        self.yaxis.set_minor_locator(NullLocator())
        self.xaxis.set_ticks_position('none')
        self.yaxis.set_ticks_position('none')
        self.xaxis.set_tick_params(label1On=False)
        self.yaxis.set_tick_params(label1On=False)

        # Set the grid on or off based on the rc params.
        self.grid(mpl.rcParams['axes.grid'])

        # Set the default limits (so that the "native" ticklabels will be
        # correct if they're turned back on)...
        Axes.set_xlim(self, -2 * self.horizon, 2 * self.horizon)
        Axes.set_ylim(self, -np.pi / 2.0, np.pi / 2.0)

        # Set up the azimuth ticks.
        self._polar.set_theta_offset(np.radians(self.rotation + 90))
        self._polar.set_theta_direction(-1)
        self._polar.grid(False)
        self._polar.set_rticks([])