docstr: Has an effect only if `marker.size` is set to a numerical
  array. Sets the rule for which the data in `size` is converted
  to pixels.
  
  The 'sizemode' property is an enumeration that may be specified as:
    - One of the following enumeration values:
          ['diameter', 'area']
  
  Returns
  -------
  Any
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code: def sizemode(self):
      """
      Has an effect only if `marker.size` is set to a numerical
      array. Sets the rule for which the data in `size` is converted
      to pixels.
  
      The 'sizemode' property is an enumeration that may be specified as:
        - One of the following enumeration values:
              ['diameter', 'area']
  
      Returns
      -------
      Any
      """
      return self["sizemode"]
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 45 for calling the Marker obj's underlying member method code with example usage: obj.sizemode() and returns: self