code: def _topWCoordinates(cls, coordinates, w):
      
      orders = numpy.array([cls._orderForCoordinate(c)
                            for c in coordinates.tolist()])
      indices = numpy.argsort(orders)[-w:]
      return coordinates[indices]
docs: Returns the top W coordinates by order.
  
      @param coordinates (numpy.array) A 2D numpy array, where each element
                                       is a coordinate
      @param w (int) Number of top coordinates to return
      @return (numpy.array) A subset of `coordinates`, containing only the
                            top ones by order