Graphviz

来自维基百科

“Graphviz（Graph Visualization Software 的缩写）是一个开源工具包 [...]，用于绘制以 DOT 语言脚本指定的图形。”

安装

安装 graphviz 软件包。

查看器

KGraphViewer — 来自 KDE 的 Graphviz DOT 图形文件查看器。

https://apps.kde.org/kgraphviewer/ || kgraphviewer

xdot.py — 用于查看以 Graphviz 的 dot 语言编写的图形的交互式查看器（基于 GTK 构建）。

https://github.com/jrfonseca/xdot.py || xdot

字体

您需要安装字体才能在图形中包含字符串。有关如何安装字体的信息，请参阅字体。

查看有哪些可用的字体

$ fc-list

查看 dot 正在使用哪些字体

$ dot example.gv -Tpng -o foo.png -v 2>&1 | grep font

示例

提示： 对于交互式图形开发，请尝试 vimdot(1)。

这是一个 dot 文件示例。

example.gv

digraph graph_name {
  graph [
    charset = "UTF-8";
    label = "sample graph",
    labelloc = "t",
    labeljust = "c",
    bgcolor = "#343434",
    fontcolor = white,
    fontsize = 18,
    style = "filled",
    rankdir = TB,
    margin = 0.2,
    splines = spline,
    ranksep = 1.0,
    nodesep = 0.9
  ];

  node [
    colorscheme = "rdylgn11"
    style = "solid,filled",
    fontsize = 16,
    fontcolor = 6,
    fontname = "Migu 1M",
    color = 7,
    fillcolor = 11,
    fixedsize = true,
    height = 0.6,
    width = 1.2
  ];

  edge [
    style = solid,
    fontsize = 14,
    fontcolor = white,
    fontname = "Migu 1M",
    color = white,
    labelfloat = true,
    labeldistance = 2.5,
    labelangle = 70
  ];

  // node define
  alpha [shape = box];
  beta [shape = box];
  gamma [shape = Msquare];
  delta [shape = box];
  epsilon [shape = trapezium];
  zeta [shape = Msquare];
  eta;
  theta [shape = doublecircle];

  // edge define
  alpha -> beta [label = "a-b", arrowhead = normal];
  alpha -> gamma [label = "a-g"];
  beta -> delta [label = "b-d"];
  beta -> epsilon [label = "b-e", arrowhead = tee];
  gamma -> zeta [label = "g-z"];
  gamma -> eta [label = "g-e", style = dotted];
  delta -> theta [arrowhead = crow];
  zeta -> theta [arrowhead = crow];
}

从此文件生成 png 图像

$ dot -Tpng example.gv -o example.png

参见

Graphviz 官方网站