%%
%% A DANTE-Edition example
%%
%% Example 15-01-53 on page 185.
%%
%% 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{pst-plot}
\def\data{0 0 1 4 1.5 1.75 2.25 4 2.75 7 3 9} \psset{lly=-0.5cm}
\begin{document}
\begin{psgraph}[axesstyle=none,ticks=none,labels=none](0,0)(3.0,9.0){12cm}{5cm}
\pscustom[fillstyle=solid,fillcolor=red!30,linestyle=none]{%
\listplot{\data}\psline(3,9)(3,0)}
\pscustom[fillstyle=solid,fillcolor=blue!20,linestyle=none]{%
\listplot{\data}\psline(3,9)(0,9)}
\listplot[linewidth=2pt]{\data}
\psaxes[axesstyle=frame,ticksize=0 5pt,xsubticks=20,ysubticks=4,
tickstyle=inner,dy=2,Dy=2,tickwidth=1.5pt,subtickcolor=black](0,0)(3,9)
\rput*(2.5,3){level 1}\rput*(1,7){level 2}
\end{psgraph}
\end{document}
