GraphViz DOT有向图 - 复杂案例分析(1)

目录

• 案例
• 案例分析

案例

digraph G {
    node [shape = circle];
    0 [label = "start", shape = none]; 
    1 [label = "q1"];
    2 [label = "q2"];
    3 [label = "q3"];
    4 [label = "q4"];
    5 [label = "q5"];
    6 [label = "q6", shape = doublecircle];

    edge [label = "ε"];
    
    {rank = same; 0 -> 1; }
    {rank = same; 2 -> 3 [label = "test"]; }
    1 -> 2 [label = "0"];
    4 -> 5 [label = "1"];
    3 -> 4;
    5 -> 6;
    5 -> 4 [constraint = false];
    6 -> 3 [constraint = false];
}

案例分析

node [shape = circle]; 默认所有节点都是圆形
0 [label = “start”, shape = none]; 节点无边框
图默认randdir=TB, 所以从上往下走。
{rank = same; 0 -> 1; } 设定节点0和1同级， 同时设定节点关系
{rank = same; 2 -> 3 [label = “test”]; } 设定节点2和3同级，设定节点关系，设置线条的说明文字
edge [label = “ε”]; 默认所有的线条都加注释ε
5 -> 4 [constraint = false]; 画线条，但不约束节点关系