【工具】使用 GraphViz 画图

概述：使用 GraphViz 画图

Example: Graphviz (dot) examples

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Dot 命令

dot渲染成其他文件命令：

Command Line | Graphviz

dot -Tsvg input.dot

中文乱码问题

需要设置字体

fontname="Microsoft Yahei"

Attributes

Attributes | Graphviz

cluster

Whether the subgraph is a cluster

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

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

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

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

constraint

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

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

使用GraphVia画结构体

使用DEMO

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;
}