Get a matplotlib plot showing the DOS.

        Args:
            xlim: Specifies the x-axis limits. Set to None for automatic
                determination.
            ylim: Specifies the y-axis limits.

def get_plot(self, xlim=None, ylim=None):
        """
        Get a matplotlib plot showing the DOS.

        Args:
            xlim: Specifies the x-axis limits. Set to None for automatic
                determination.
            ylim: Specifies the y-axis limits.
        """

        plt = pretty_plot(12, 8)
        base = 0.0
        i = 0
        for key, sp in self._spectra.items():
            if not self.stack:
                plt.plot(sp.x, sp.y + self.yshift * i, color=self.colors[i],
                         label=str(key), linewidth=3)
            else:
                plt.fill_between(sp.x, base, sp.y + self.yshift * i,
                                 color=self.colors[i],
                                 label=str(key), linewidth=3)
                base = sp.y + base
            plt.xlabel(sp.XLABEL)
            plt.ylabel(sp.YLABEL)
            i += 1

        if xlim:
            plt.xlim(xlim)
        if ylim:
            plt.ylim(ylim)

        plt.legend()
        leg = plt.gca().get_legend()
        ltext = leg.get_texts()  # all the text.Text instance in the legend
        plt.setp(ltext, fontsize=30)
        plt.tight_layout()
        return plt