def convert(self, coords, **kw):
    (total_points, opts) = self.convert_many(coords[np.newaxis], **kw)
    return (total_points[0], opts)
def convert(self, coords, **kw):
    (total_points, opts) = self.convert_many(coords[np.newaxis], **kw)
    return (total_points[0], opts)