强制 GraphViz 将子图对齐在另一个之下

【问题标题】：Force GraphViz to align subgraphs one below other强制 GraphViz 将子图对齐在另一个之下
【发布时间】：2017-07-24 15:09:15
【问题描述】：

我有一个包含 3 个子图的图表，这些子图一个接一个地放置，我希望它们彼此堆叠在一起（我不希望子图内容的方向发生变化）。

简单的例子：

digraph G {
rankdir=TB;
    subgraph cluster_lkg{
        subgraph cluster_sentence_1{
            "A1","A2","A3"
            "A1" -> "A2"
            "A1" -> "A3"
        }
        subgraph cluster_concepts_1{
            "B1","B2","B3"
            "B1" -> "B2"
            "B1" -> "B3"
        }
    }
    subgraph cluster_fkgs{
            "C1","C2","C3"
            "C1" -> "C2"
            "C1" -> "C3"
    }

}

【问题讨论】：

标签： graphviz subgraph

【解决方案1】：

为了使rankdir = TB 有效，您需要连接集群（或更准确地说，集群内的节点）。你可以通过使用不可见的边缘来做到这一点：

digraph G 
{
    rankdir=TB;    
    subgraph cluster_lkg
    {
        subgraph cluster_sentence_1
        {
            "A1","A2","A3"
            "A1" -> "A2"
            "A1" -> "A3"
        }
        subgraph cluster_concepts_1{
            "B1","B2","B3"
            "B1" -> "B2"
            "B1" -> "B3"
        }
        //A1 -> B1;
    }
    subgraph cluster_fkgs
    {
            "C1","C2","C3"
            "C1" -> "C2"
            "C1" -> "C3"
    }
    edge[ style = invis ];
    { A2 A3 } -> B1;
    { B2 B3 } -> C1;
}

产生

节点 C1 未对齐 - 我猜这是来自嵌套集群，但我没有针对它的方法。无论如何，希望它有所帮助。

【讨论】：