%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 5-13-19 on page 288.
%% 
%%  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{135.83385pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-plot}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid=true](3,4)
  \pscustom[linewidth=1.5pt]{%
    \translate(0,1.5)
    \psplot{0}{3}{x 180.0 mul 1.5 div sin}
    \msave
      \translate(1,2)
      \scale{1 0.5}
      \psplot[liftpen=2]{-1}{2}{x 180.0 mul 1.5 div sin}
    \mrestore
    \psplot[liftpen=2]{0}{3}{x 180.0 mul 0.5 div cos}}
\end{pspicture}
\end{document}