@classmethod
def to_tile_coordinates(cls, latitudes, longitudes, center_lat, center_long,
    zoom, size, scale):
    """Transform a set of lat/long coordinates into pixel position in a tile. These coordinates depend on
            * the zoom level
            * the tile location on the world map

        :param pandas.Series latitudes: set of latitudes
        :param pandas.Series longitudes: set of longitudes
        :param float center_lat: center of the tile (latitude)
        :param float center_long: center of the tile (longitude)
        :param int zoom: Google maps zoom level
        :param int size: size of the tile
        :param int scale: 1 or 2 (free plan), see Google Static Maps API docs

        :return: pixel coordinates in the tile
        :rtype: pandas.DataFrame
        """
    pixels = cls.to_pixels(latitudes, longitudes)
    return scale * ((pixels - cls.to_pixel(center_lat, center_long)) * 2 **
        zoom + size / 2)
