DOT (graph description language)#JavaScript

File:DotLanguageUndirected.svg

At its simplest, DOT can be used to describe an undirected graph. An undirected graph shows simple relations between objects, such as reciprocal friendship between people. The graph keyword is used to begin a new graph, and nodes are described within curly braces. A double-hyphen (--) is used to show relations between the nodes.

// The graph name and the semicolons are optional

graph graphname {

a -- b -- c;

b -- d;

}

{{-}}

File:DotLanguageDirected.svg

Similar to undirected graphs, DOT can describe directed graphs, such as flowcharts and dependency trees. The syntax is the same as for undirected graphs, except the digraph keyword is used to begin the graph, and an arrow (->) is used to show relationships between nodes.

digraph graphname {

a -> b -> c;

b -> d;

}

{{-}}

File:DotLanguageAttributes.svg

Various attributes can be applied to graphs, nodes and edges in DOT files.{{cite web|title=Node, Edge and Graph Attributes|url=http://www.graphviz.org/doc/info/attrs.html |website=graphviz.org|access-date=2017-05-12}} These attributes can control aspects such as color, shape, and line styles. For nodes and edges, one or more attribute–value pairs are placed in square brackets [] after a statement and before the semicolon (which is optional). Graph attributes are specified as direct attribute–value pairs under the graph element, where multiple attributes are separated by a comma or using multiple sets of square brackets, while node attributes are placed after a statement containing only the name of the node, but not the relations between the dots.

graph graphname {

// This attribute applies to the graph itself

size="1,1";

// The label attribute can be used to change the label of a node

a [label="Foo"];

// Here, the node shape is changed.

b [shape=box];

// These edges both have different line properties

a -- b -- c [color=blue];

b -- d [style=dotted];

// [style=invis] hides a node.

}

HTML-like labels are supported, although initially Graphviz did not handle them.{{cite web|url=http://www.graphviz.org/doc/info/shapes.html#html|title=Node Shapes: HTML-Like Labels|website=graphviz.org|access-date=2017-05-12}}{{-}}

DOT supports C and C++ style single line and multiple line comments. In addition, it ignores lines with a number sign symbol # as their first character, like many interpreted languages.

File:Huffman (To be or not to be).svg]

The DOT language defines a graph, but does not provide facilities for rendering the graph. There are several programs that can be used to render, view, and manipulate graphs in the DOT language:

• Graphviz – a collection of CLI utilities and libraries to manipulate and render graphs into different formats like SVG, PDF, PNG etc.
• dot – CLI tool for conversion between {{Code|.dot}} and other formats

• Canviz{{snd}}a JavaScript library for rendering DOT files{{cite web| url=http://www.ryandesign.com/canviz/ |title=canviz: graphviz on a canvas |access-date=2017-06-02}}
• d3-graphviz{{snd}}a JavaScript library based on Viz.js and D3.js that renders DOT graphs and supports animated transitions between graphs and interactive graph manipulation{{cite web |url=https://github.com/magjac/d3-graphviz |website=github.com |title=GitHub - magjac/d3-graphviz: Graphviz DOT rendering and animated transitions using D3 |access-date=2018-06-06}}
• Vis.js{{snd}}a JavaScript library that accept DOT as input for network graphs.{{cite web |url=http://visjs.org/docs/network/#importDot |website=vis.js |title=Import data in DOT language |access-date=2018-12-22}}
• Viz.js – a JavaScript port of Graphviz that provides a simple wrapper for using it in the browser.
• hpcc-js/wasm Graphviz{{snd}}a fast WASM library for Graphviz similar to Viz.js{{cite web |url=https://github.com/hpcc-systems/hpcc-js-wasm#graphviz-graphvizlibwasm |title=hpcc-js/wasm |website=GitHub |access-date=2020-10-21}}

• Gephi{{snd}}an interactive visualization and exploration platform for all kinds of networks and complex systems, dynamic and hierarchical graphs
• Grappa{{snd}}a partial port of Graphviz to Java
• graphviz-java{{snd}}an open source partial port of Graphviz to Java available from github.com
• ZGRViewer{{snd}}a DOT viewer{{cite web |url=http://zvtm.sourceforge.net/zgrviewer.html |website=zvtm.sourceforge.net |title=ZGRViewer |access-date=2017-05-12}}

• Beluging{{snd}}a Python- & Google Cloud Platform-based viewer of DOT and Beluga extensions
• Delineate{{snd}}a Rust application for Linux than can edit fully-featured DOT graph with interactive preview, and export as PNG, SVG, or JPEG
• dot2tex{{snd}}a program to convert files from DOT to PGF/TikZ or PSTricks, both of which are rendered in LaTeX{{cite web |title=dot2tex – A Graphviz to LaTeX converter |url=https://dot2tex.readthedocs.io/ |website=dot2tex.readthedocs.io |date=2019-11-01}}
• OmniGraffle{{snd}}a digital illustration application for macOS that can import a subset of DOT, producing an editable document (but the result cannot be exported back to DOT)
• Tulip{{snd}}a software framework in C++ that can import DOT files for analysis{{cite web |url=http://tulip.labri.fr/ |website=tulip.labri.fr |title=Data Visualization Software – Tulip |access-date=2017-05-12}}
• VizierFX{{snd}}an Apache Flex graph rendering library in ActionScript{{cite web |url=https://github.com/gvhung/vizierfx |website=github.com |title=GitHub - gvhung/vizierfx: Automatically exported from code.google.com/p/vizierfx |access-date=2017-05-12}}

{{Reflist}}

{{commonscat|DOT language}}

• [https://www.graphviz.org/documentation/ DOT tutorial and specification]
• [https://www.graphviz.org/pdf/dotguide.pdf Drawing graphs with dot]
• [https://www.graphviz.org/doc/info/attrs.html Node, Edge and Graph Attributes]
• [https://www.graphviz.org/doc/info/shapes.html Node Shapes]
• [https://www.graphviz.org/gallery/ Gallery of examples]
• [https://dreampuf.github.io/GraphvizOnline/ Graphviz Online]: instant conversion and visualization of DOT descriptions
• [https://www.boost.org/libs/graph/doc/index.html Boost Graph Library]
• [http://www0.cs.ucl.ac.uk/staff/W.Langdon/lisp2dot.html lisp2dot] or [https://github.com/andrewlin16/tree2dot tree2dot]: convert Lisp programming language-like program trees to DOT language (designed for use with genetic programming)

{{Graph representations}}

Category:Mathematical software

Category:Graph description languages

Category:Graph drawing