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%%
%% The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%% Example 6-7-56 on page 459.
%%
%% 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{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{207.83385pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-func,multido}
\definecolorseries{col}{cmyk}%
{last}{blue}{white}
\resetcolorseries[41]{col}
\StopShownPreambleCommands
\begin{document}
\psset{unit=.4}
\begin{pspicture}(-9,-8)(9,8.5)
\psaxes[Dx=2,Dy=2,tickstyle=bottom,
ticksize=2pt]{->}(0,0)(-9,-8)(9,8.4)
\multido{\rA=0.2+0.1,\iA=0+1}{40}{%
\psLame[radiusA=8,radiusB=7,
linecolor={col!![\iA]},
linewidth=.8pt]{\rA}}
\end{pspicture}
\end{document}
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