def _compute_ratio(top, bot):
        """ Make a map that is the ratio of two maps
        """
        data = np.where(bot.data > 0, top.data / bot.data, 0.)
        return HpxMap(data, top.hpx)
def _compute_ratio ( top , bot ) : data = np . where ( bot . data > 0 , top . data / bot . data , 0. ) return HpxMap ( data , top . hpx )
Make a map that is the ratio of two maps