docs: def get_height(self, points, edge=True, attach=False, extra_height=0):
          """
          Launch ``pyny.Place.get_height(points)`` recursively for all 
          the ``pyny.Place``.
          
          The points outside the object will have a NaN value in the
          z column. These point will not be stored but it will be
          returned.
           
          :param points: list of coordinates of the points to calculate.
          :type points: ndarray (shape=(N, 2 or 3))
          :param edge: If True, consider the points in the Polygon's edge
              inside the Polygon.
          :type edge: bool
          :param attach: If True, stores the computed points along with
              the Place's set of points.
          :type attach: bool
          :param extra_height: Adds an extra height (z value) to the
              resulting points.
          :type extra_height: float
          :returns: (x, y, z)
          :rtype: ndarray
          """
          for place in self:
              points = place.get_height(points, edge, attach, extra_height)
          if not attach: return points