DOT - Diagram lang

DOT is a diagram lang created in 2007 by Emden R. Gansner and Eleftherios Koutsofios and Stephen North.

#193on PLDB

17Years Old

28kRepos

DOT is a plain text graph description language. DOT graphs are typically files with the file extension gv or dot. The extension gv is preferred to avoid confusion with the extension dot used by early (pre-2007) versions of Microsoft Word. Read more on Wikipedia...

Tags: diagramLang
There are at least 27,831 DOT repos on GitHub
Early development of DOT happened in AT&T
The Google BigQuery Public Dataset GitHub snapshot shows 67 users using DOT in 68 repos on GitHub
ANTLR grammar for DOT
Pygments supports syntax highlighting for DOT
GitHub supports syntax highlighting for DOT
There is 1 Jupyter Kernel for DOT
See also: (6 related languages) JavaScript, Java, Python, Google Cloud Platform, ActionScript, SVG
Read more about DOT on the web: 1.
7 PLDB concepts link to DOT: D2, FCL, FlowchartFun, Flowgorithm, Finite State Language, Mscgen, Workfl

Example from the web:

 // The graph name and the semicolons are optional
graph graphname {
    a -- b -- c;
    b -- d;
}

Example from Linguist:

/*
  Huffman Tree DOT graph.

  DOT Reference :  http://www.graphviz.org/doc/info/lang.html
                   http://en.wikipedia.org/wiki/DOT_language
  Timestamp     :  1415989074
  Phrase        :  'OH GOD WHY IS LINGUIST SO ANAL ABOUT THIS STUFF'

  Generated on http://huffman.ooz.ie/
*/

digraph G {
    edge [label=0];
    graph [ranksep=0];
    T [shape=record, label="{{T|4}|000}"];
    S [shape=record, label="{{S|5}|001}"];
    SPACE [shape=record, label="{{SPACE|9}|01}"];
    A [shape=record, label="{{A|3}|1000}"];
    H [shape=record, label="{{H|3}|1001}"];
    U [shape=record, label="{{U|3}|1010}"];
    L [shape=record, label="{{L|2}|10110}"];
    N [shape=record, label="{{N|2}|10111}"];
    I [shape=record, label="{{I|4}|1100}"];
    O [shape=record, label="{{O|4}|1101}"];
    G [shape=record, label="{{G|2}|11100}"];
    F [shape=record, label="{{F|2}|11101}"];
    GF [label=4];
    W [shape=record, label="{{W|1}|111100}"];
    Y [shape=record, label="{{Y|1}|111101}"];
    B [shape=record, label="{{B|1}|111110}"];
    D [shape=record, label="{{D|1}|111111}"];
    BD [label=2];
    WYBD [label=4];
    GFWYBD [label=8];
    47 -> 18 -> 9 -> T;
    29 -> 13 -> 6 -> A;
    7 -> U;
    4 -> L;
    16 -> 8 -> I;
    GFWYBD -> GF -> G;
    WYBD -> 2 -> W;
    BD -> B;9 -> S [label=1];
    18 -> SPACE [label=1];
    6 -> H [label=1];
    13 -> 7 -> 4 -> N [label=1];
    8 -> O [label=1];
    GF -> F [label=1];
    2 -> Y [label=1];
    47 -> 29 -> 16 -> GFWYBD -> WYBD -> BD -> D [label=1];
}

Example from Wikipedia:

digraph g {
	node [shape=plaintext];
	A1 -> B1;
	A2 -> B2;
	A3 -> B3;
	
	A1 -> A2 [label=f];
	A2 -> A3 [label=g];
	B2 -> B3 [label="g'"];
	B1 -> B3 [label="(g o f)'" tailport=s headport=s];

	{ rank=same; A1 A2 A3 }
	{ rank=same; B1 B2 B3 }
}

Language features

Feature	Supported	Example	Token
MultiLine Comments	✓	/* A comment */	/* */
Comments	✓	// A comment
Line Comments	✓	// A comment	//
Semantic Indentation	X