docstr: aux_trans : a transform from the source (curved) coordinate to
  target (rectilinear) coordinate. An instance of MPL's Transform
  (inverse transform should be defined) or a tuple of two callable
  objects which defines the transform and its inverse. The callables
  need take two arguments of array of source coordinates and
  should return two target coordinates.
  
  e.g., ``x2, y2 = trans(x1, y1)``
code: def __init__(
      self,
      aux_trans,
      extreme_finder=None,
      grid_locator1=None,
      grid_locator2=None,
      tick_formatter1=None,
      tick_formatter2=None,
  ):
      """
      aux_trans : a transform from the source (curved) coordinate to
      target (rectilinear) coordinate. An instance of MPL's Transform
      (inverse transform should be defined) or a tuple of two callable
      objects which defines the transform and its inverse. The callables
      need take two arguments of array of source coordinates and
      should return two target coordinates.
  
      e.g., ``x2, y2 = trans(x1, y1)``
      """
      super(GridHelperCurveLinear, self).__init__()
  
      self.grid_info = None
      self._old_values = None
      # self._grid_params = dict()
      self._aux_trans = aux_trans
  
      self.grid_finder = GridFinder(
          aux_trans,
          extreme_finder,
          grid_locator1,
          grid_locator2,
          tick_formatter1,
          tick_formatter2,
      )
  
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 GridHelperCurveLinear object from inherited base classes: GridHelperBase with example: obj = GridHelperCurveLinear(aux_trans, extreme_finder, grid_locator1, grid_locator2, tick_formatter1, tick_formatter2)