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%% 
%%  A DANTE-Edition example
%% 
%%  Example 23-06-37 on page 401.
%% 
%%  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{105.70511pt}
\setlength\parindent{0pt}
\usepackage{pst-solides3d}



\begin{document}
\psset{Decran=5,viewpoint= 20 20 30 rtp2xyz}
\defFunction{Func}(x,y){x dup mul y dup mul add 3 div RadtoDeg sin}{}{}
\begin{pspicture}(-6,-1)(6,7)
\psSolid[object=surface,linewidth=0.0001,function=Func,ngrid=.4 .4,base=-5 5 -5 5]
\end{pspicture}
\end{document}