def display_variogram_model(self):
        """Displays variogram model with the actual binned data."""
        fig = plt.figure()
        ax = fig.add_subplot(111)
        ax.plot(self.lags, self.semivariance, 'r*')
        ax.plot(self.lags,
                self.variogram_function(self.variogram_model_parameters,
                                        self.lags), 'k-')
        plt.show()
Displays variogram model with the actual binned data.