class_docstr: tick at every integer mapping of the string data
class_docstr_tok: ["tick","at","every","integer","mapping","of","the","string","data"]
code: def tick_values(self, vmin, vmax):
      return self()
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from collections import OrderedDict
  import itertools
  import six
  import numpy
  import matplotlib.units
  import matplotlib.ticker
  from distutils.version import LooseVersion
label_desc: Use image node_id 3 for calling the StrCategoryLocator obj's underlying member method code with example usage: obj.tick_values(vmin, vmax) and returns: self