class_docstr: The main purpose of these class is to have auto adjust of axes size
  to the data with different layout of cuts.
class_docstr_tok: ["The","main","purpose","of","these","class","is","to","have","auto","adjust","of","axes","size","to","the","data","with","different","layout","of","cuts","."]
docstr: Contour a 3D map in all the views.
  
  Parameters
  -----------
  map: 3D ndarray
      The 3D map to be plotted. If it is a masked array, only
      the non-masked part will be plotted.
  affine: 4x4 ndarray
      The affine matrix giving the transformation from voxel
      indices to world space.
  kwargs:
      Extra keyword arguments are passed to contour.
docstr_tok: ["Contour","a","3D","map","in","all","the","views",".","Parameters","--","--","--","--","--","-","map",":","3D","ndarray","The","3D","map","to","be","plotted",".","If","it","is","a","masked","array",",","only","the","non-masked","part","will","be","plotted",".","affine",":","4x4","ndarray","The","affine","matrix","giving","the","transformation","from","voxel","indices","to","world","space",".","kwargs",":","Extra","keyword","arguments","are","passed","to","contour","."]
code: def contour_map(self, map, affine, **kwargs):
      """Contour a 3D map in all the views.
  
      Parameters
      -----------
      map: 3D ndarray
          The 3D map to be plotted. If it is a masked array, only
          the non-masked part will be plotted.
      affine: 4x4 ndarray
          The affine matrix giving the transformation from voxel
          indices to world space.
      kwargs:
          Extra keyword arguments are passed to contour.
      """
      self._map_show(map, affine, type="contour", **kwargs)
  
imports: import matplotlib
  import matplotlib.pyplot
  import numpy
  from matplotlib import transforms
  from nipy.utils import is_iterable
  from ..datasets import VolumeImg
  from .None import cm
  from .coord_tools import coord_transform, find_cut_coords, get_bounds, get_mask_bounds
  from .edge_detect import _edge_map
label_desc: Use image node_id 6 for calling the BaseSlicer obj's underlying member method code with example usage: obj.contour_map(map, affine) without return types