%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 6-1-48 on page 334.
%% 
%%  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}

\AtBeginDocument{%
\renewcommand\pshlabel[1]{\small$#1$}
\renewcommand\psvlabel[1]{\small$#1$}}
\StartShownPreambleCommands
\usepackage{pstricks,pst-plot}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-2,-0.5)(2,4)
 \psaxes{->}(0,0)(-2,-0.5)(2,4)
 \uput[-90](2,0){x}
 \uput[0](0,4){y}
 \psplot[plotpoints=10,showpoints=true]{-2}{2}{x dup mul}
\end{pspicture}
\end{document}