[Axiom-developer] [GraphViz] (new)

[Bill Page]

Changes http://page.axiom-developer.org/zope/mathaction/GraphViz/diff
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"An Introduction to GraphViz":http://www.linuxjournal.com/article/7275

  By Mihalis Tsoukalos on Wed, 2004-09-08 23:00.

How to use command-line tools and basic GraphViz utilities to
produce graphs both simple and complex.

GraphViz is a collection of tools for manipulating graph structures
and generating graph layouts. Graphs can be either directed or
undirected. GraphViz offers both graphical and command-line tools.
A Perl interface also is available, but it is not covered here for
reasons of generality. Graphical tools are not going to be discussed
in this article either. Instead, this article focuses on using GraphViz
from the command line.

See more here: http://www.wickle.com/wikis/index.php/Graphviz_extension
<hr />

The follow graphs are generated by MathAction

My First Graph::

  \\begin{latex}
  \\digraph[scale=0.5]{MyGraph1}{rankdir=LR; a->b; b->c}
  \\end{latex}

Produces:
\begin{latex}
\digraph[scale=0.5]{MyGraph1}{rankdir=LR; a->b; b->c}
\end{latex}

A More Complex Example::

  \\begin{latex}
  \\digraph[scale=1.0]{MyGraph2}{
      size ="4,4";
      main [shape=box]; /* this is a comment */
      main -> parse [weight=8];
      parse -> execute;
      main -> init [style=dotted];
      main -> cleanup;
      execute -> { make_string; printf}
      init -> make_string;
      edge [color=red]; // so is this
      main -> printf [style=bold,label="100 times"];
      make_string [label="make a string"];
      node [shape=box,style=filled,color=".7 .3 1.0"];
      execute -> compare;
    }
  \\end{latex}

Produces:
\begin{latex}
\digraph[scale=1.0]{MyGraph2}{
    size ="4,4";
    main [shape=box]; /* this is a comment */
    main -> parse [weight=8];
    parse -> execute;
    main -> init [style=dotted];
    main -> cleanup;
    execute -> { make_string; printf}
    init -> make_string;
    edge [color=red]; // so is this
    main -> printf [style=bold,label="100 times"];
    make_string [label="make a string"];
    node [shape=box,style=filled,color=".7 .3 1.0"];
    execute -> compare;
  }
\end{latex}

Here's One From

  http://www.linuxjournal.com/article/7275

This::

  \\begin{latex}
  \\digraph{MyGraph3}
  {
        node [shape = record];
        node0 [ label ="<f0> | <f1> J | <f2> "];
        node1 [ label ="<f0> | <f1> E | <f2> "];
        node4 [ label ="<f0> | <f1> C | <f2> "];
        node6 [ label ="<f0> | <f1> I | <f2> "];
        node2 [ label ="<f0> | <f1> U | <f2> "];
        node5 [ label ="<f0> | <f1> N | <f2> "];
        node9 [ label ="<f0> | <f1> Y | <f2> "];
        node8 [ label ="<f0> | <f1> W | <f2> "];
        node10 [ label ="<f0> | <f1> Z | <f2> "];
        node7 [ label ="<f0> | <f1> A | <f2> "];
        node3 [ label ="<f0> | <f1> G | <f2> "];
        "node0":f0 -> "node1":f1;
        "node0":f2 -> "node2":f1;
        "node1":f0 -> "node4":f1;
        "node1":f2 -> "node6":f1;
        "node4":f0 -> "node7":f1;
        "node4":f2 -> "node3":f1;
        "node2":f0 -> "node5":f1;
        "node2":f2 -> "node9":f1;
        "node9":f0 -> "node8":f1;
        "node9":f2 -> "node10":f1;
  }
  \\end{latex}

Gets you this:
\begin{latex}
\digraph{MyGraph3}
{
        node [shape = record];
        node0 [ label ="<f0> | <f1> J | <f2> "];
        node1 [ label ="<f0> | <f1> E | <f2> "];
        node4 [ label ="<f0> | <f1> C | <f2> "];
        node6 [ label ="<f0> | <f1> I | <f2> "];
        node2 [ label ="<f0> | <f1> U | <f2> "];
        node5 [ label ="<f0> | <f1> N | <f2> "];
        node9 [ label ="<f0> | <f1> Y | <f2> "];
        node8 [ label ="<f0> | <f1> W | <f2> "];
        node10 [ label ="<f0> | <f1> Z | <f2> "];
        node7 [ label ="<f0> | <f1> A | <f2> "];
        node3 [ label ="<f0> | <f1> G | <f2> "];
        "node0":f0 -> "node1":f1;
        "node0":f2 -> "node2":f1;
        "node1":f0 -> "node4":f1;
        "node1":f2 -> "node6":f1;
        "node4":f0 -> "node7":f1;
        "node4":f2 -> "node3":f1;
        "node2":f0 -> "node5":f1;
        "node2":f2 -> "node9":f1;
        "node9":f0 -> "node8":f1;
        "node9":f2 -> "node10":f1;
}
\end{latex}
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