docstr: Assigns extra data each datum. This may be useful when
  listening to hover, click and selection events. Note that,
  "scatter" traces also appends customdata items in the markers
  DOM elements
  
  The 'customdata' property is an array that may be specified as a tuple,
  list, numpy array, or pandas Series
  
  Returns
  -------
  numpy.ndarray
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code: def customdata(self):
      """
      Assigns extra data each datum. This may be useful when
      listening to hover, click and selection events. Note that,
      "scatter" traces also appends customdata items in the markers
      DOM elements
  
      The 'customdata' property is an array that may be specified as a tuple,
      list, numpy array, or pandas Series
  
      Returns
      -------
      numpy.ndarray
      """
      return self["customdata"]
  
imports: from plotly.basedatatypes import BaseTraceType
  import copy
label_desc: Use image node_id 1 for calling the Parcoords obj's underlying member method code with example usage: obj.customdata() and returns: self