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%%
%% A DANTE-Edition example
%%
%% Example 23-06-67 on page 418.
%%
%% 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{225.70511pt}
\setlength\parindent{0pt}
\usepackage{pst-solides3d}
\begin{document}
\psset{viewpoint=50 40 30 rtp2xyz,
Decran=30,lightsrc=viewpoint}
\begin{pspicture}(-6,-2)(7,4)
\psSurface[ngrid=0.25 0.25,incolor=yellow,
linewidth=0.01,axesboxed,algebraic,
hue=0 1,Zmin=-1,Zmax=1](-4,-4)(4,4)%
{sin((x^2+y^2)/3)}
\end{pspicture}
\end{document}
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