%% 
%%  A DANTE-Edition example
%% 
%%  Example 11-03-18 on page 132.
%% 
%%  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,pst-plot}

\begin{document}
\begin{pspicture}[showgrid](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}