%% The LaTeX Graphics Companion, 2ed (first printing May 2007)

%%
%% The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%% Example 6-1-40 on page 332.
%%
%% 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{159.83385pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-plot}
\StopShownPreambleCommands
\begin{document}
\psset{xunit=1.5cm,yunit=1.5cm}
\begin{pspicture}(-1.1,-1.1)(1.1,1.1)
\psgrid[subgriddiv=0,griddots=10,
gridlabels=7pt](-1,-1)(1,1)
\parametricplot[plotstyle=curve,
linewidth=1.5pt,plotpoints=200]{-360}{360}
{t 1.5 mul sin t 2 mul 60 add sin}
\end{pspicture}
\end{document}