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【工具】使用 GraphViz 画图

文章目录
  1. 1. Dot 命令
  2. 2. 中文乱码问题
  3. 3. Attributes
    1. 3.1. cluster
    2. 3.2. colorscheme
    3. 3.3. compound
    4. 3.4. concentrate
    5. 3.5. constraint
  4. 4. 使用GraphVia画结构体
    1. 4.1. 使用DEMO

概述：使用 GraphViz 画图

Example: Graphviz (dot) examples

[toc]

Dot 命令

dot渲染成其他文件命令：

Command Line | Graphviz

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dot -Tsvg input.dot

中文乱码问题

需要设置字体

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fontname="Microsoft Yahei"

Attributes

Attributes | Graphviz

cluster

Whether the subgraph is a cluster

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digraph cats {
  subgraph cluster_big_cats {
    // This subgraph is a cluster, because the name begins with "cluster"
    
    "Lion";
    "Snow Leopard";
  }

  subgraph domestic_cats {
    // This subgraph is also a cluster, because cluster=true.
    cluster=true;

    "Siamese";
    "Persian";
  }

  subgraph not_a_cluster {
    // This subgraph is not a cluster, because it doesn't start with "cluster",
    // nor sets cluster=true.
    
    "Wildcat";
  }
}

colorscheme

A color scheme namespace: the context for interpreting color names

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graph {
  node [colorscheme=oranges9] # Apply colorscheme to all nodes
  1 [color=1]
  2 [color=2]
  3 [color=3]
  4 [color=4]
  5 [color=5]
  6 [color=6]
  7 [color=7]
  8 [color=8]
  9 [color=9]
}

compound

If true, allow edges between clusters

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digraph {
  compound=true;

  subgraph cluster_a {
    label="Cluster A";
    node1; node3; node5; node7;
  }
  subgraph cluster_b {
    label="Cluster B";
    node2; node4; node6; node8;
  }

  node1 -> node2 [label="1"];
  node3 -> node4 [label="2" ltail="cluster_a"];
  
  node5 -> node6 [label="3" lhead="cluster_b"];
  node7 -> node8 [label="4" ltail="cluster_a" lhead="cluster_b"];
}

concentrate

If true, use edge concentrators

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digraph {
    concentrate=true
    a -> b [label="1"]
    c -> b
    d -> b
}

constraint

If false, the edge is not used in ranking the nodes

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digraph G {
  a -> c;
  a -> b;
  b -> c [constraint=false];
}

使用GraphVia画结构体

使用DEMO

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digraph structs {
    node [shape=record];
    struct1 [label="<f0> left|<f1> mid&#92; dle|<f2> right"];
    struct2 [label="<f0> one|<f1> two"];
    struct3 [label="hello&#92;nworld |{ b |{c|<here> d|e}| f}| g | h"];
    struct1:f1 -> struct2:f0;
    struct1:f2 -> struct3:here;
}