%%% sparklines.sty Version 1.0
%%%
%%% What Are Sparklines?
%%% Sparklines are intense, simple, wordlike graphics (so named by Edward Tufte).
%%% In lieu of a more detailed introduction, Professor Tufte's site has an early
%%% release of a chapter on sparklines, see www.edwardtufte.com. A PHP
%%% implementation can be found at http://sparkline.sourceforge.net/.
%%%
%%% Notice that the package does NOT run with pictex!
%%%
%%% Copyright 2005 Andreas Loeffler
%%% ========================================================================
%%% LICENCE:
%%% This file may be distributed under the terms of the LaTeX Project Public
%%% License, as described in lppl.txt in the base LaTeX distribution.
%%% Either version 1 or, at your option, any later version.
%%% ========================================================================
%%% al@wacc.de
%%%
%%% MODIFICATION HISTORY:
%%% Apr 21, 2005
%%% version 1.1: bug removed thanks to Mathias Hofmann <mathias.hofmann@web.de>
%%% Dec 12, 2004
%%% version 1.0: first version of sparklines

\RequirePackage{pgf} \ProvidesPackage{sparklines}
      [2005/01/01 v1.0 Sparklines (see more on sparklines at www.EdwardTufte.com)]

% defines sparkline environment
\newenvironment{sparkline}[1]{\begin{pgfpicture}{0ex}{0ex}{#1 ex}{1.75ex}
 \pgfsetlinewidth{0.2pt} %line width of 0.2 pt
 \pgfsetxvec{\pgfpoint{#1 ex}{0pt}} % says that on unit on the x axes is #1 times the size of x
 \pgfsetyvec{\pgfpoint{0pt}{1.75ex}} % says that on unit on the y axes is 1.75 times the size of x
 } {\pgfstroke \end{pgfpicture} }

% defines sparkdot with color
\def\sparkdot #1 #2 #3 {%
    {\pgfmoveto{\pgforigin}\color{#3}\pgfcircle[fill]{\pgfxy(#1,#2)}{1.2pt}}%
}

% definies sparkrectangle
\def\sparkrectangle #1 #2 {%
    {\pgfmoveto{\pgforigin}\color[rgb]{0.9,0.9,0.9} \pgfrect[fill]{\pgfxy(0, #1)}{\pgfxy(1, #2)}}}

% taken from pictex
\def\@shouldIstop#1#2{%
  \def\first{#1}%
  \def\second{#2}%
  \futurelet\nextchar\@testnext}
\def\@testnext{%
    \ifx \nextchar /
      \let\next=\first
    \else
      \let\next=\second
    \fi
  \next}

% defines sparkline-plot
\def\spark #1 #2 {%
  \pgfmoveto{\pgfxy(#1,#2)} %
  \@SPARK}
\def\@SPARK#1 #2 {%
  \pgflineto{\pgfxy(#1,#2)} %
  \@shouldIstop{\pgfstroke\ignorespaces}{\@SPARK}}
