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%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 3-6-6 on page 131.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  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.
%% 

\documentclass{ttctexagray}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.83385pt}
\StartShownPreambleCommands
\usepackage[metapost]{mfpic}
\StopShownPreambleCommands
\begin{document}
\opengraphsfile{tmp}
\begin{mfpic}[10][10]{-7}{7}{-7}{7}
\axes
\piechart[c 0]{(0,0),5}{1,2,3,4,5,6,7,8,30}
\gfill[red]\piewedge{1}\piewedge{1}
\piewedge{2}
\piewedge{3}
\piewedge{4}
\gfill[blue]\piewedge[x 3]{5}\piewedge[x 3]{5}
\piewedge{6}
\gfill[green]\piewedge[x 2]{7}\piewedge[x 2]{7}
\piewedge{8}
\piewedge{9}
\end{mfpic}
\closegraphsfile
\end{document}