%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 6-7-25 on page 433.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexagray}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{338.0pt}
\StartShownPreambleCommands
\usepackage{pst-spectra,pstricks-add}
\StopShownPreambleCommands
\begin{document}
\psspectrum[element=Si](\linewidth,1)
\par
\renewcommand\pshlabel{\footnotesize\sffamily}
\begin{pspicture}(0,-0.5)(\linewidth,1.8) \psset{begin=650,end=450,gamma=1}
  \psspectrum[absorption,element=Ne](\linewidth,1.5)
  \psaxes[Ox=650,Dx=-10,dx=0.8999,yAxis=false,ticksize=0 1mm,
          ticks=x,subticks=0](\linewidth,0.01)
\end{pspicture}
\par
\begin{pspicture}(\linewidth,1.2)
  \psspectrum[absorption,lines={400,434.8,476.2,526.3,588.2,666.7},
              lwidth=0.1](\linewidth,1)
\end{pspicture}
\end{document}