Visual rendering by Graphviz. Events 694 - Egica, a king of the Visigoths of Hispania, accuses Jews of aiding Muslims sentencing all Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. An operating system (commonly abbreviated OS and O/S) is the software component of a Computer system that is responsible for the management and coordination Linux (commonly pronounced ˈlɪnəks Microsoft Windows is a series of Software Operating systems and Graphical user interfaces produced by Microsoft. Mac OS X (mæk oʊ ɛs tɛn is a line of computer Operating systems developed marketed and sold by Apple Inc, the latest of which is pre-loaded on all currently Computer software can be organized into categories based on common function type or field of use A software license (or software licence in commonwealth usage is a Legal instrument governing the usage or redistribution of copyright protected software The CPL (Common Public License is a Free software / Open-source software license published by IBM. A website (alternatively web site or Web site, a back-construction from the Proper noun World Wide Web) is a collection of Web pages This graph visualises the relationship between a group of bloggers. A blog (a contraction of the term " Web log " is a Web site, usually maintained by an individual with regular entries of commentary descriptions of

Undirected graph showing adjacency of the 48 continental United States

Graphviz (short for Graph Visualization Software) is a package of open source tools initiated by AT&T Research Labs for drawing graphs specified in DOT language scripts. The United States of America —commonly referred to as the AT&T Labs Inc is the Research & development arm of American Telecommunications giant AT&T. Graph drawing, as a branch of Graph theory, applies Topology and Geometry to derive two-dimensional representations of graphs Graph drawing is In Mathematics and Computer science, graph theory is the study of graphs: mathematical structures used to model pairwise relations between objects DOT is a plain text graph description language It is a simple way of describing graphs that both humans and computer programs can use It also provides libraries for software applications to use the tools. Graphviz is free software licensed under the Common Public License. Free software or software libre is Software that can be used studied and modified without restriction and which can be copied and redistributed in modified or unmodified The CPL (Common Public License is a Free software / Open-source software license published by IBM.

Architecture

Graphviz consists of a graph description language named the DOT language^[1] and a set of tools that can generate and/or process DOT files:

dot 

a command-line tool to lay out directed graphs into a variety of output formats (PostScript, PDF, SVG, annotated text and so on). DOT is a plain text graph description language It is a simple way of describing graphs that both humans and computer programs can use PostScript ( PS) is a dynamically typed concatenative Programming language created by John Warnock and Charles Geschke in 1982

neato 

the counterpart of dot for undirected graphs.

twopi 

for radial graph layouts.

circo 

for circular graph layouts.

fdp 

another layout engine for undirected graphs.

dotty 

a graphical user interface to visualize and edit graphs.

lefty 

a programmable widget that displays DOT graphs and allows the user to perform actions on them with the mouse. In computer programming a widget (or control) is an element of a Graphical user interface (GUI that displays an information arrangement changeable by the user Lefty can therefore be used as the view in a model-view-controller GUI application that uses graphs. Model-view-controller ( MVC) is an architectural pattern used in Software engineering.

Applications

• Doxygen uses Graphviz to generate diagrams including class hierarchies and collaboration for C++, Java and Python
• GRAMPS uses Graphviz to create family trees
• Graphviz - MediaWiki Graphviz Extension
• Linguine Maps Java API to Graphviz
• lisp2dot converts Lisp-like program trees to DOT language. Doxygen is a Documentation generator for C++, C, Java, Objective-C, Python, IDL ( Corba and Microsoft GRAMPS, an acronym of Genealogical Research and Analysis Management Programming System, is a free Genealogy software that is a part of the GNOME project Lisp (or LISP) is a family of Computer Programming languages with a long history and a distinctive fully parenthesized syntax Designed for use with genetic programming. In Artificial intelligence, genetic programming (GP is an Evolutionary algorithm based methodology inspired by Biological evolution to find
• MoinMoin wiki Graphviz Extension
• THE CHART plots sexual networks based on data input by members
• UMLGraph creates UML class and sequence diagrams from declarative specifications
• WinGraphviz is a win32 platform application. A sexual network is a Social network that is defined by the Sexual relationships within a set of individuals Unified Modeling Language ( UML) is a standardized general-purpose Modeling language in the field of Software engineering.
• EHT Graphviz is a Wordpress plugin to integrate easily Graphviz images into a Wordpress page.
• WikidPad - Uses Graphviz as a plugin

See also

• Graph (mathematics)
• Graph drawing
• Graph theory

External links

• Graphviz Homepage
• AT&T Research Labs
• An Introduction to Graphviz and dot (M. Simionato, 2004)
• Create relationship diagrams with Graphviz (Shashank Sharma, 2005)
• Visualize function calls with Graphviz (M. Tim Jones, 2005)

References

1. ^ The DOT Language