%%
%% A DANTE-Edition example
%%
%% Example 23-05-19 on page 368.
%%
%% 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{201.70511pt}
\setlength\parindent{0pt}
\def\func{ x 3 exp x y 4 exp mul add x 5 div sub 10 mul
2.729 x dup mul y dup mul add neg exp mul
2.729 x 1.225 sub dup mul y dup mul add neg exp add }
\usepackage{pstricks,pst-3dplot}
\begin{document}
\begin{pspicture}(-6,-3)(6,4) \psset{Beta=15}
\psplotThreeD[plotstyle=line,drawStyle=xyLines,yPlotpoints=50,xPlotpoints=50,
linewidth=0.2pt](-4,4)(-4,4){\func}
\pstThreeDCoor[xMax=5,yMax=5,zMax=3.5]
\end{pspicture}
\end{document}
