class_docstr: Chart boundings
class_docstr_tok: ["Chart","boundings"]
docstr: Create the chart bounds with min max horizontal
  and vertical values
docstr_tok: ["Create","the","chart","bounds","with","min","max","horizontal","and","vertical","values"]
code: def __init__(self, xmin=0, ymin=0, xmax=1, ymax=1):
      """
      Create the chart bounds with min max horizontal
      and vertical values
      """
      self._xmin = xmin
      self._ymin = ymin
      self._xmax = xmax
      self._ymax = ymax
  
imports: from __future__ import division
  from math import cos, log10, pi, sin
label_desc: Use image node_id 1 to create a new Box object from inherited base classes: object with example: obj = Box(xmin, ymin, xmax, ymax)