code: def plot(self,
               data,
               chart_type,
               chart_package='corechart',
               options=None,
               w=800,
               h=420):
          
          return HTML(
              self.iframe.format(
                  source=self.render(
                      data=data,
                      options=options,
                      chart_type=chart_type,
                      chart_package=chart_package,
                      head=self.head),
                  w=w,
                  h=h))
docs: Output an iframe containing the plot in the notebook without saving.