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-rw-r--r--Master/texmf-dist/doc/metapost/base/source/mpgraph.tex57
1 files changed, 40 insertions, 17 deletions
diff --git a/Master/texmf-dist/doc/metapost/base/source/mpgraph.tex b/Master/texmf-dist/doc/metapost/base/source/mpgraph.tex
index 104b70bf917..e19b1024ce9 100644
--- a/Master/texmf-dist/doc/metapost/base/source/mpgraph.tex
+++ b/Master/texmf-dist/doc/metapost/base/source/mpgraph.tex
@@ -1,9 +1,11 @@
+% $Id: mpgraph.tex,v 1.3 2005/03/22 00:16:53 karl Exp $
+% MetaPost graph doc, by John Hobby. License at end.
\documentclass{article} % article is NOT the original style
\usepackage{makeidx}
\usepackage{fancyvrb}
\usepackage{ctabbing}
\RecustomVerbatimEnvironment{verbatim}{BVerbatim}{baseline=c}
-\usepackage{epsf}
+\usepackage{graphics}
\usepackage[textwidth=6in,textheight=8.75in]{geometry}
\newcommand\descr[1]{{\langle\hbox{\rm#1}\rangle}}
@@ -11,7 +13,7 @@
\newcommand\tdescr[1]{$\langle$\invisgap{\rm#1}\invisgap$\rangle$}
\newcommand\Ignore[1]{} % For fooling delatex so spell will work
-\newfont\psyvii{rpsyr at 7pt}
+\newfont\psyvii{psyr at 7pt}
\newcommand\regmark{$^{\hbox{\psyvii\char'322}}$} % Registered trademark
\newcommand\logofn{\global\font\logofn=logo8 \logofn}
\newcommand\logo{\global\font\logo=logo10 \logo}
@@ -119,7 +121,7 @@ $$
Americans of that age in 1991 \cite{Census92}.)
\begin{figure}[htp]
-$$ \epsfbox{mpgraph.1} $$
+$$ \includegraphics{mpgraph-1.mps} $$
\caption{A graph of the 1991 age distribution in the United States}
\label{fig1}
\end{figure}
@@ -165,11 +167,28 @@ generates only bullets as shown in Figure~\ref{fig2}.
cause the line to reappear superimposed on the plotting symbols.)
\begin{figure}[htp]
-$$ \epsfbox{mpgraph.2} $$
+$$ \includegraphics{mpgraph-2.mps} $$
\caption{The 1991 age distribution plotted with bullets}
\label{fig2}
\end{figure}
+Watch out for the following: the \tdescr{picture expression} is placed
+with the lower-left corner at the path knot, not its center. If you
+want it to be dead-center, you have to correct the placement
+yourself. For the example above, you need something like this instead:
+
+\medskip
+\begin{verbatim}
+def MPbullet =
+ btex \lower\fontdimen22\cmsy \hbox to 0pt{\hss\cmsy\char15\hss} etex
+enddef;
+\end{verbatim}
+
+\medskip\noindent
+followed by:
+$$ \hbox{\verb|gdraw "agepop91.d" plot MPbullet|} $$
+
+
% glabel, gdotlabel, OUT
The {\tt glabel} and {\tt gdotlabel} commands add labels to a graph. The
@@ -211,7 +230,7 @@ large numbers. We shall see later that simple transformations such as this can
be achieved without generating new data files.
\begin{figure}[htp]
-$$ \epsfbox{mpgraph.3} $$
+$$ \includegraphics{mpgraph-3.mps} $$
\caption{An improved version of the 1991 age distribution graph}
\label{fig3}
\end{figure}
@@ -270,7 +289,7 @@ draw begingraph(3in,2in);
endgraph;
\end{verbatim}
\atop
-\epsfbox{mpgraph.4}
+\includegraphics{mpgraph-4.mps}
$$
\caption{The 1991 age distribution graph and the input that creates it.}
\label{fig4}
@@ -306,8 +325,8 @@ Figure~\ref{fig5} graphs execution times for two matrix multiplication algorithm
using
$$ \hbox{\tt setcoords(log,log)} $$
to specify logarithmic spacing on both axes. The data file {\tt matmul.d} gives
-timings for both algorithms:\\
-\hbox to\hsize{\footnotesize\hfil$
+timings for both algorithms:
+$$ \hbox to\hsize{\footnotesize\hfil$
\begin{verbatim}
20 .007861 standard MM: size, seconds
30 .022051
@@ -332,13 +351,14 @@ timings for both algorithms:\\
480 72.60
\end{verbatim}
\hfil$}
+$$
A blank line in a data file ends a data set. Subsequent {\tt gdraw} commands
access additional data sets by just naming the same data file again.
Since each line gives one $x$~coordinate and one $y$~coordinate, commentary
material after the second data field on a line is ignored.
\begin{figure}[htp]
-$$ \mathcenter{\epsfbox{mpgraph.5}}
+$$ \mathcenter{\includegraphics{mpgraph-5.mps}}
\quad
\begin{BVerbatim}[baseline=c]
draw begingraph(2.3in,2in);
@@ -386,7 +406,7 @@ draw begingraph(6.5cm,4.5cm);
endgraph;
\end{verbatim}
\atop
-\mathcenter{\epsfbox{mpgraph.6}}
+\mathcenter{\includegraphics{mpgraph-6.mps}}
$$
\caption{Annual lead emissions and average level at atmospheric monitoring
stations in the United States. The MetaPost input is shown above
@@ -465,16 +485,19 @@ $$ \begin{verbatim}
vardef newy(expr y) = (256/75)*y + mlog y enddef;
draw begingraph(3in,2in);
glabel.lft(btex \vbox{\hbox{Population} \hbox{in millions}} etex, OUT);
- gdraw "ttimepop.d";
+ path p;
+ gdata("timepop.d", $, augment.p($1, newy(Scvnum $2)); );
+ gdraw p withpen nullpen;
for y=5,10,20,50,100,150,200,250:
grid.lft(format("%g",y), newy(y)) withcolor .85white;
endfor
autogrid(grid.bot,) withcolor .85white;
+ gdraw p;
frame.llft;
endgraph;
\end{verbatim}
\atop
- \epsfbox{mpgraph.7}
+ \includegraphics{mpgraph-7.mps}
$$
\caption{Population of the United States in millions versus time with the
population re-expressed as $p/75+\ln p$. The MetaPost input shown
@@ -564,7 +587,7 @@ draw begingraph(3in,2in);
endgraph;
\end{verbatim}
\atop
- \epsfbox{mpgraph.8}
+ \includegraphics{mpgraph-8.mps}
$$
\caption{A scatter plot and the commands that generated it}
\label{fig8}
@@ -638,7 +661,7 @@ draw begingraph(3in,2in);
endgraph;
\end{verbatim}
\atop
- \epsfbox{mpgraph.9}
+ \includegraphics{mpgraph-9.mps}
$$
\caption{A graph of U.S. annual energy production
and the commands that generated it}
@@ -726,10 +749,10 @@ $$ \hbox{\tt format($\descr{string expression}$,\,%
does this. You must first {\tt input graph} or {\tt input format} to load the
macro file. The macro takes a format string and a number to typeset and returns
a picture containing the typeset result. Thus
-$$ \hbox{\verb|format("%g",2+2)|}\quad {\rm yields}\quad \epsfbox{mpgraph.10} $$
+$$ \hbox{\verb|format("%g",2+2)|}\quad {\rm yields}\quad \includegraphics{mpgraph-10.mps} $$
and
$$ \hbox{\verb|format("%3g","6.022e23")|}
- \quad {\rm yields}\quad \epsfbox{mpgraph.11}
+ \quad {\rm yields}\quad \includegraphics{mpgraph-11.mps}
$$
A format string consists of
@@ -1061,7 +1084,7 @@ For completeness, we also mention one other new feature of MetaPost
Version 0.60. When \TeX\ material is included in a picture via the
{\tt btex}\ldots{\tt etex} feature, the thickness of horizontal and
vertical rules gets rounded to exactly the right number of pixels; i.e.,
-interpreting MetaPost output according to the PostScript\regmark\ scan
+interpreting MetaPost output according to the PostScript scan
conversion rules~\cite{ad:red} makes the pixel width equal to the ceiling
of the unrounded width. In fact, a similar relationship holds for all line
widths. The generated PostScript sets line widths by first transforming