@property
    def units(self):
        units, name = None, None
        if self.projected or self.local:
            units, name = capi.linear_units(self.ptr, byref(c_char_p()))
        elif self.geographic:
            units, name = capi.angular_units(self.ptr, byref(c_char_p()))
        if name is not None:
            name.decode()
        return (units, name)

    #### Spheroid/Ellipsoid Properties ####
Return True if graph is directed.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/gis/gdal/srs.py/SpatialReference.units--crossover with--dataset/ETHPy150Open networkx/networkx/networkx/classes/function.py/is_directed