如何在点中创建群集？

Question

假设，我想在图形中的几个节点之间创建一个子集群（以某种方式表示这些节点因某种原因而聚集在一起）：

digraph G {
  A [group=g1]
  {rank = same; B[group=g2]; C[group=g3]}
  D [group=g1]
  {rank = same; E[group=g2]; F[group=g3]}

  A -> B [label="2", weight=2]
  A -> C [label="0", style=dashed, weight=2]
  B -> C [label="0", style=dashed, weight=2]
  B -> D [label="2", style=dashed, weight=2]
  C -> D [label="0", weight=2]
  D -> E [label="1", style=dashed, weight=2]
  D -> F [label="0", weight=2]
  E -> F [label="0", weight=2]
  F -> A

  edge[style=invis];
  A -> D
  B -> E
  C -> F

  subgraph cluster_0 {
    label = "I want this in its own sub-square"
    B->E
    B->Asti

    style=filled;
    color=lightgrey;
    node [style=filled,color=white];
    edge[style=invis];
  }

}

如你所见，我只是部分成功。也就是说，asti位于其自己的灰色群集中，但节点B和E不是。

有人可以指出如何将所有三个节点E，B和asti放入该灰色群集中？

由于

Answer 1

使用newrank=true来避免＆＃34;取消装箱＆＃34;簇

digraph G {
  newrank=true;

  A [group=g1]
  {rank = same; B[group=g2]; C[group=g3]}
  D [group=g1]
  {rank = same; E[group=g2]; F[group=g3]}

  A -> B [label="2", weight=2]
  A -> C [label="0", style=dashed, weight=2]
  B -> C [label="0", style=dashed, weight=2]
  B -> D [label="2", style=dashed, weight=2]
  C -> D [label="0", weight=2]
  D -> E [label="1", style=dashed, weight=2]
  D -> F [label="0", weight=2]
  E -> F [label="0", weight=2]
  F -> A

  edge[style=invis];
  A -> D
  B -> E
  C -> F

  subgraph cluster_0 {
    label = "I want this in its own sub-square"
    B->E
    B->Asti

    style=filled;
    color=lightgrey;
    node [style=filled,color=white];
    edge[style=invis];
  }

}