def _plot_area_source(self, source, border='k-', border_width=1.0):
        """
        Plots the area source
        :param source:
            Area source as instance of :class: mtkAreaSource
        :param str border:
            Line properties of border (see matplotlib documentation for detail)
        :param float border_width:
            Line width of border (see matplotlib documentation for detail)
        """
        lons = np.hstack([source.geometry.lons, source.geometry.lons[0]])
        lats = np.hstack([source.geometry.lats, source.geometry.lats[0]])
        x, y = self.m(lons, lats)
        self.m.plot(x, y, border, linewidth=border_width)
Plots the area source
        :param source:
            Area source as instance of :class: mtkAreaSource
        :param str border:
            Line properties of border (see matplotlib documentation for detail)
        :param float border_width:
            Line width of border (see matplotlib documentation for detail)