使用子图和rankdir , rank指令可以指定部分节点排序。
下图是没有使用这些指令的代码:
digraph finite_state_machine { size="18,10" node [shape = doublecircle]; 8; node [shape = circle];0; node [shape = plaintext]; "" ->0 [label ="start"]; node [shape = circle]; 0->1 [label = "a"]; 2->3 [label = "a"]; 4->5 [label = "b"]; 3->6 [label = "ε"]; 5->6 [label = "ε"]; 1->2 [label = "ε"]; 1->4 [label = "ε"]; 6->0 [label = "ε"]; 6->7 [label = "ε"]; 7->8 [label = "a"]; }
显示效果:
使用子图和rankdir ,rank代码:
digraph finite_state_machine { rank = name;0;1; rankdir = LR; size="18,10" node [shape = doublecircle]; 8; node [shape = circle];0; node [shape = plaintext]; "" ->0 [label ="start"]; node [shape = circle]; 0->1 [label = "a"]; subgraph a{ 2->3 [label = "a"]; 4->5 [label = "b"]; 3->6 [label = "ε"]; 5->6 [label = "ε"]; } 1->2 [label = "ε"]; 1->4 [label = "ε"]; 6->0 [label = "ε"]; 6->7 [label = "ε"]; 7->8 [label = "a"]; }
期中rankdir=LR;表示从左至右,rank排序,效果:
在dokuwikiwiki上使用plot插件需要注意:
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