%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 3-6-5 on page 130.
%% 
%%  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}
\newcommand{\greenbar}[1]{%
   \gfill[green]\chartbar{#1}\chartbar{#1}}
\newcommand{\redbar}[1]{%
   \gfill[red]\chartbar{#1}\chartbar{#1}}

\StopShownPreambleCommands
\begin{document}
\opengraphsfile{tmp}
\begin{mfpic}[10][10]{0}{11}{0}{7}
\axes
\barchart[1,1,-.4]{v}{1,2,3,4,5,4,3,2,1}
\redbar{1}\redbar{2}\redbar{3}
\redbar{4}\redbar{5}\redbar{6}
\redbar{7}\redbar{8}\redbar{9}

\barchart[1,1,.4]{v}{2,1,5,3,6,3,6,4,3}
\greenbar{1}\greenbar{2}\greenbar{3}
\greenbar{4}\greenbar{5}\greenbar{6}
\greenbar{7}\greenbar{8}\greenbar{9}

\end{mfpic}
\closegraphsfile
\end{document}