code: def addScalarBar(self, c=None, title="", horizontal=False, vmin=None, vmax=None):
          
          # book it, it will be created by Plotter.show() later
          self.scalarbar = [c, title, horizontal, vmin, vmax]
          return self
docs: Add a 2D scalar bar to actor.
  
          .. hint:: |mesh_bands| |mesh_bands.py|_