class_docstr: <<< Calendar Diagram >>>
  
  The calendar diagram is mainly used to represent the size of a value by
  color and must be used in conjunction with the visualMap component.
  Two categories of axes must be used in rectangular coordinates.
code: def __init__(
      self,
      init_opts: types.Init = opts.InitOpts(),
      render_opts: types.RenderInit = opts.RenderOpts(),
  ):
      super().__init__(init_opts=init_opts, render_opts=render_opts)
      self.options.update(calendar=opts.CalendarOpts().opts)
  
imports: from ...None import options
  from ...None import types
  from ...charts.chart import Chart
  from ...globals import ChartType
label_desc: Use image node_id 1 to create a new Calendar object from inherited base classes: Chart with example: obj = Calendar(init_opts, render_opts)