def ximshow_unrectified(self, slitlet2d):
        """Display unrectified image with spectrails and frontiers.

        Parameters
        ----------
        slitlet2d : numpy array
            Array containing the unrectified slitlet image.

        """

        title = "Slitlet#" + str(self.islitlet)
        ax = ximshow(slitlet2d, title=title,
                     first_pixel=(self.bb_nc1_orig, self.bb_ns1_orig),
                     show=False)
        xdum = np.linspace(1, EMIR_NAXIS1, num=EMIR_NAXIS1)
        ylower = self.list_spectrails[0](xdum)
        ax.plot(xdum, ylower, 'b-')
        ymiddle = self.list_spectrails[1](xdum)
        ax.plot(xdum, ymiddle, 'b--')
        yupper = self.list_spectrails[2](xdum)
        ax.plot(xdum, yupper, 'b-')
        ylower_frontier = self.list_frontiers[0](xdum)
        ax.plot(xdum, ylower_frontier, 'b:')
        yupper_frontier = self.list_frontiers[1](xdum)
        ax.plot(xdum, yupper_frontier, 'b:')
        pause_debugplot(debugplot=self.debugplot, pltshow=True)
Display unrectified image with spectrails and frontiers.

        Parameters
        ----------
        slitlet2d : numpy array
            Array containing the unrectified slitlet image.