class_docstr: Box plot
  For each series, shows the median value, the 25th and 75th percentiles,
  and the values within
  1.5 times the interquartile range of the 25th and 75th percentiles.
  
  See http://en.wikipedia.org/wiki/Box_plot
docstr: Compute parameters necessary for later steps
  within the rendering process
code: def _compute(self):
      """
      Compute parameters necessary for later steps
      within the rendering process
      """
      for serie in self.series:
          serie.points, serie.outliers = self._box_points(
              serie.values, self.box_mode
          )
  
      self._x_pos = [
          (i + 0.5) / self._order for i in range(self._order)
      ]
  
      if self._min:
          self._box.ymin = min(self._min, self.zero)
      if self._max:
          self._box.ymax = max(self._max, self.zero)
  
file_path: pygal/pygal/graph/box.py
imports: from bisect import bisect_left, bisect_right
  from pygal.graph.graph import Graph
  from pygal.util import alter, decorate
label_desc: Use image node_id 2 for calling the Box obj's underlying member method code with example usage: obj._compute() without return types