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+%%
+%% A DANTE-Edition example
+%%
+%% Example 02-01-16 on page 21.
+%%
+%% Copyright (C) 2011 Herbert Voss
+%%
+%% 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.
+%%
+%%
+%% ====
+% Show page(s) 1
+%%
+\documentclass[]{article}
+\pagestyle{empty}
+\setlength\textwidth{201.70511pt}
+\setlength\parindent{0pt}
+
+\usepackage{pstricks}
+\newcount\WL \unitlength.75pt
+\def\WaveToPS#1{%
+ \definecolor{tmp}{wave}{#1}\extractcolorspec{tmp}\tmp
+ \expandafter\convertcolorspec\tmp{rgb}\tmp \expandafter\WaveToPSi\tmp,}
+\def\WaveToPSi#1,#2,#3,{\pstVerb{/Red {#1} def /Green {#2} def /Blue {#3} def}}
+%
+\pstVerb{/Corr {dup 0 gt {Gamma exp} if } def }
+\definecolor[ps]{lambda}{rgb}{Red Corr Green Corr Blue Corr}
+
+\begin{document}
+\begin{picture}(510,70)(310,-10)\sffamily\tiny
+ \linethickness{1.25\unitlength}\WL=360
+ \pstVerb{/Gamma .8 def}\multiput(320,0)(1,0){456}{%
+ \WaveToPS{\the\WL}{\color{lambda}\line(0,1){50}}\global\advance\WL1}%
+ \linethickness{0.25\unitlength}\WL=360
+ \multiput(320,0)(20,0){23}{%
+ \picture(0,0)
+ \line(0,-1){5}\multiput(5,0)(5,0){3}{\line(0,-1){2.5}}%
+ \put(0,-10){\makebox(0,0){\the\WL}}\global\advance\WL20
+ \endpicture}%
+\end{picture}
+\end{document}