code: def _plot(self):
          
          r_max = min(
              self.view.x(1) - self.view.x(0),
              (self.view.y(0) or 0) - self.view.y(1)
          ) / (2 * 1.05)
          for serie in self.series:
              self.dot(serie, r_max)
docs: Plot all dots for series