%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  Copyright (C) 2010 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[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-plot}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid](3,3)
  \pscustom{ \psplot{0}{3}{x 180.0 mul 1.5 div sin 1.5 mul 1.5 add}
    \gsave
      \psline(3,3)(0,3)% wird _nicht_ gezeichnet
      \fill[fillcolor=lightgray,fillstyle=solid]
    \grestore }
\end{pspicture}  \qquad
\begin{pspicture}[showgrid](3,3)
  \pscustom[plotpoints=200,algebraic]{ \psplot{0}{3}{sin(1.5*x)+1.5}
    \gsave
      \psline(*3 {sin(1.5*x)+1.5})(*3 {-sin(1.5*x)+1.5})
      \psplot{3}{0}{-sin(1.5*x)+1.5}
      \fill[fillcolor=lightgray,fillstyle=solid]
    \grestore
    \psplot[liftpen=2]{3}{0}{-sin(1.5*x)+1.5}}
\end{pspicture}
\end{document}