docstr: Sets the mid-point of the color domain by scaling `marker.cmin`
  and/or `marker.cmax` to be equidistant to this point. Has an
  effect only if in `marker.color`is set to a numerical array.
  Value should have the same units as in `marker.color`. Has no
  effect when `marker.cauto` is `false`.
  
  The 'cmid' property is a number and may be specified as:
    - An int or float
  
  Returns
  -------
  int|float
code: def cmid(self):
      """
      Sets the mid-point of the color domain by scaling `marker.cmin`
      and/or `marker.cmax` to be equidistant to this point. Has an
      effect only if in `marker.color`is set to a numerical array.
      Value should have the same units as in `marker.color`. Has no
      effect when `marker.cauto` is `false`.
  
      The 'cmid' property is a number and may be specified as:
        - An int or float
  
      Returns
      -------
      int|float
      """
      return self["cmid"]
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 7 for calling the Marker obj's underlying member method code with example usage: obj.cmid() and returns: self