= GraphViz =
Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics,  software engineering, database and web design, machine learning, and in visual interfaces for other technical domains. 

http://www.graphviz.org/

== GraphViz for MoinMoin ==
http://moinmo.in/GraphVizForMoin

 * cd /tmp
 * wget http://moinmo.in/GraphVizForMoin?action=AttachFile&do=view&target=MoinGraphViz-1.0rc4-brn-1.9.x.comp.zip
 * unzip MoinGraphViz-1.0rc4-brn-1.9.x.comp.zip 
 * cd/tmp/MoinGraphViz-1.0rc4-brn-1.9.x.comp/wiki/data/plugin
 * cp * -r /home/moin/moin-1.9.7/wiki/data/plugin/ 
 * cd /home/moin/moin-1.9.7/wiki/data/plugin/ 
 * chown moin * -R
 * chgrp apache * -R
 * cd/tmp/MoinGraphViz-1.0rc4-brn-1.9.x.comp/umoin
 * cp MoinLegacy /home/moin/moin-1.9.7/MoinMoin/support/
 * cd /home/moin/moin-1.9.7/MoinMoin/support/
 * chown moin * -R
 * chgrp apache * -R
 * yum install graphviz
 * vim /home/moin/moin-1.9.7/wiki/data/plugin/parser/MoinGraphViz/main-py # GRAPHVIZ_TOOLS_DIR = r'/usr/bin'
 * service httpd restart

=== Test after installation ===
If all was installed correctly a graph should appear below
{{{#!GraphViz dot
digraph SomeGraph {
  A -> { B C }
  B -> C
}
}}}


== Sample 1 ==
{{{#!GraphViz dot
digraph G {
 main -> parse -> execute;
 main -> init;
 main -> cleanup;
 execute -> make_string;
 execute -> printf
 init -> make_string;
 main -> printf;
 execute -> compare;
}
}}}

== UML with GraphViz ==

=== UML Sample 1 ===
http://www.ffnn.nl/pages/articles/media/uml-diagrams-using-graphviz-dot.php

{{{#!GraphViz dot
digraph UMLTest {
  fontname = "Bitstream Vera Sans"
  fontsize = 8
  node [  fontname = "Bitstream Vera Sans"  fontsize = 8  shape = "record"  ]
  edge [ fontname = "Bitstream Vera Sans" fontsize = 8 ]

  Animal [ label = "{Animal|+ name : string\l+ age : int\l|+ die() : void\l}"  ]

  subgraph clusterAnimalImpl {
    label = "Package animal.impl"
    Dog [ label = "{Dog||+ bark() : void\l}"  ]
    Cat [ label = "{Cat||+ meow() : void\l}"  ]
  }

  edge [ arrowhead = "empty"  ]

  Dog -> Animal
  Cat -> Animal

  edge [  arrowhead = "none"  headlabel = "0..*"  taillabel = "0..*"  ]
  Dog -> Cat
}

}}}

=== UML Sample 2 ===
http://www.lornajane.net/posts/2011/uml-diagrams-with-graphviz

{{{#!GraphViz dot
digraph Couriers {
fontname = "Bitstream Vera Sans"
fontsize = 8

node [
fontname = "Bitstream Vera Sans"
fontsize = 8
shape = "record"
]

edge [ arrowtail = "empty" ]

Courier [ label = "{Courier|+ name : string\l+ home_country : string\l|+ calculateShipping() : float\l+ ship(): boolean\l}" ]

Monotype [ label = "{MonotypeDelivery|\l|+ ship(): boolean\l}" ]
Pigeon [ label = "{PigeonPost|\l|+ ship(): boolean\l}" ]
Courier -> Pigeon [dir=back]
Courier -> Monotype [dir=back]
}
}}}

=== UML Sample 3 ===
http://canvoki.net/coder/resources/DotUmlUseCases.html

http://canvoki.net/coder/DotUseCases/MarUseCases.dot

{{{#!GraphViz dot
digraph example {
        rankdir=LR;
        bgcolor="#eeeeff";
        node [fontname=Arial, fontsize=10];
        edge [color=red, style=bold, fontsize=9];

        // Actors
        {
                node [shape=custom, shapefile="Actor.png", 
                        width=.352, height=0.77, fixedsize=true, 
                        color="#ffffaa", label="\n\n\n\n\n\n\N"]
                Shark
                Submariner
                Pirate
                Merchant
        }

        // System Use Cases
        subgraph clusterSystem
        {
                label="Sea"; // Name your system here
                fillcolor="#ffffdd"; style=filled; color=black; // The system box
                node [shape=ellipse, style=filled, fillcolor="#ccffcc", color="#558855"]

                Batism
                Inmersion
                "Eat pirates" // You can name it with spaces
                // But is better to use a 'label' property to make easier the references
                Tresour [label="Find a tresour"] 
                Attack [label="Attack ships"]
                Escafandrarse [label="Put on the\nescafandre"] // Multiline
                Ron [label="Drink Ron"]
                SellGoods
                Navigate
                GaleonPiloting [label="Navigate in galeon"]
                BuyGoods [label="Buy Goods"]
        }

        // Uses
        Submariner -> Inmersion
        Submariner -> Batism
        Pirate -> Attack
        Pirate -> Ron
        Merchant -> SellGoods
        Shark -> "Eat pirates"

        // Extensions
        {
                edge [label="<<extends>>", dir=back]
                Inmersion -> Tresour
        }

        // Inclusions
        {
                edge [label="<<includes>>"]
                Inmersion -> Escafandrarse
                SellGoods -> Navigate
                SellGoods -> BuyGoods
                Attack -> GaleonPiloting
        }

        // Generalizations
        {
                edge [arrowsize=1.5, arrowtail=empty, dir=back, constraint=false]
                Inmersion -> Batism
                Navigate -> GaleonPiloting
        }
}

}}}