class_docstr: Helper class for a fixed axis.
docstr: nth_coord = along which coordinate value varies.
   nth_coord = 0 ->  x axis, nth_coord = 1 -> y axis
code: def __init__(self, grid_helper, side, nth_coord_ticks=None):
      """
      nth_coord = along which coordinate value varies.
       nth_coord = 0 ->  x axis, nth_coord = 1 -> y axis
      """
  
      super(FixedAxisArtistHelper, self).__init__(loc=side)
  
      self.grid_helper = grid_helper
      if nth_coord_ticks is None:
          nth_coord_ticks = self.nth_coord
      self.nth_coord_ticks = nth_coord_ticks
  
      self.side = side
      self._limits_inverted = False
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from six.moves import zip
  from itertools import chain
  from .grid_finder import GridFinder
  from .axislines import AxisArtistHelper, GridHelperBase
  from .axis_artist import AxisArtist
  from matplotlib.transforms import Affine2D, IdentityTransform
  import numpy
  from matplotlib.path import Path
label_desc: Use image node_id 1 to create a new FixedAxisArtistHelper object from inherited base classes: AxisArtistHelper with example: obj = FixedAxisArtistHelper(grid_helper, side, nth_coord_ticks)