%% 
%%  A DANTE-Edition example
%% 
%% 
%%  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}

\usepackage{pstricks,pst-3dplot}

\begin{document}
\psset{unit=2cm,Beta=10,Alpha=60}
\begin{pspicture}(-1.25,-1.2)(1,1.2)
\pstThreeDCoor[xMax=2.5,yMax=2.5,zMax=2.5,
   drawing=false]
\pstThreeDBox(1,1,-1)(-2,0,0)(0,-2,0)(0,0,2)
\psplotThreeD[linecolor=blue,drawStyle=xyLines]%
  (-1,1)(-1,1){x 2 exp y mul}
\psplotThreeD[linecolor=red,drawStyle=yLines]%
  (-1,1)(-1,1){x 2 exp y mul}
\end{pspicture}
\end{document}