Question

我想创建一个看起来像这样的图表，我。即边缘从节点Manufacturer of means of production到具有相同名称的子图。

我为此编写了以下代码：

digraph G {
    rankdir=LR;
    compound=true;

    graph [fontname="Liberation Mono"];
    node [fontname="Liberation Mono"];
    edge [fontname="Liberation Mono"];

    subgraph cluster0 {
        label="System components";
        mmp [label="Manufacturer of means of production", shape=box];
    }

    subgraph cluster1 {
        t1start [label="Start of tact 1", shape=point]
        t1end [label="End of tact 1", shape=point ]
        subgraph cluster1_mmp {
            label="Manufacturer of means of production"

            cluster1_1 [label="Node 1", color=white]


            subgraph cluster1_1_1 {
                label="Technological cycle 1"

                cluster1_1_1 [label="Node 2", color=white]
            }
            subgraph cluster1_1_2 {
                label="Technological cycle 2"

                cluster1_1_2 [label="Node 2", color=white]
            }
        }
    }

    subgraph cluster2 {
        label="Такт 2"
        t2start [label="Start of tact 2", shape=point]
        t2end [label="End of tact 2", shape=point]

    }
    t1end -> t2start
    mmp -> cluster1_1 [ltail=cluster1_mmp]; 
}

如果我尝试编译此代码（"C:\Program Files (x86)\Graphviz2.38\bin\"dot.exe -Tpng -ograph.png graph.dot），我会收到警告Warning: mmp -> cluster1_1: tail not inside tail cluster cluster1_mmp。

如何修复它并使边缘转到子图？

更新1：

您可以在下面找到预期结果的图像 - 从节点到子图的边（子图，而不是子图内的节点）。此边缘在下图中为红色。

更新2 ：更改了如下所示的代码。

digraph G {
    rankdir=LR;
    compound=true;

    graph [fontname="Liberation Mono"];
    node [fontname="Liberation Mono"];
    edge [fontname="Liberation Mono"];

    subgraph cluster0 {
        label="System components";
        mmp [label="Manufacturer of means of production", shape=box];
    }

    subgraph cluster1 {
        t1start [label="Start of tact 1", shape=point]
        t1end [label="End of tact 1", shape=point ]
        subgraph cluster1_mmp {
            label="Manufacturer of means of production"

            testNode [label="Node 1", color=white]

            subgraph cluster1_1_1 {
                label="Technological cycle 1"

                cluster1_1_1 [label="Node 2", color=white]
            }
            subgraph cluster1_1_2 {
                label="Technological cycle 2"

                cluster1_1_2 [label="Node 2", color=white]
            }
        }
    }

    subgraph cluster2 {
        label="Такт 2"
        t2start [label="Start of tact 2", shape=point]
        t2end [label="End of tact 2", shape=point]

    }
    t1end -> t2start
    mmp -> cluster1 [ltail=cluster0, lhead=cluster1, label="           "];

}

Answer 1

您需要更改最后一行

mmp -> cluster1_1 [ltail=cluster1_mmp];

到

mmp -> cluster1_1 [lhead=cluster1 label="           "]

然后图表按预期进行

此外，如果您希望边缘从框外开始，那么您可以

mmp -> cluster1_1 [ltail=cluster0 lhead=cluster1 label="           "];

修改

使用的最终代码

digraph G { rankdir=LR; compound=true; graph [fontname="Liberation Mono"]; node [fontname="Liberation Mono"]; edge [fontname="Liberation Mono"]; subgraph cluster0 { label="System components"; mmp [label="Manufacturer of means of production", shape=box]; } subgraph cluster1 { t1start [label="Start of tact 1", shape=point] t1end [label="End of tact 1", shape=point ] subgraph cluster1_mmp { label="Manufacturer of means of production" cluster1_1 [label="Node 1", color=white] subgraph cluster1_1_1 { label="Technological cycle 1" cluster1_1_1 [label="Node 2", color=white] } subgraph cluster1_1_2 { label="Technological cycle 2" cluster1_1_2 [label="Node 2", color=white] } } } subgraph cluster2 { label="Такт 2" t2start [label="Start of tact 2", shape=point] t2end [label="End of tact 2", shape=point] } t1end -> t2start mmp -> cluster1_1 [lhead=cluster1 label=" "] }

相同的小提琴link

Answer 2

Urm，你的意思是“lhead = cluster1_mmp”而不是ltail？

您的边缘指定为：

mmp -> cluster1_1 [ltail=cluster1_mmp];

您遇到的错误消息是“警告：mmp - ＆gt; cluster1_1：尾部不在尾部簇cluster1_mmp内”

这表示你的尾巴不在尾群内。尾簇是cluster1_mmp。 cluster1_1，你要连接的东西肯定在cluster1_mmp里面。这解释了你的困惑。

只有经过GraphvizFiddle的大量调查后，我才最终记得带箭头的尖端是 head （即语法为tail -> head）。

所以，cluster1_1，你试图说的节点在cluster1_mmp中是箭头的头部。这就是为什么你的ltail规范不起作用的原因。将其更改为lhead可以消除错误消息并生成一个看起来像您的图片的图形。箭头会转到子图，正是您在问题中要求的内容。

这是两个GraphvizFiddles，一个of the original code generating the original error和一个with ltail changed to lhead，与您的图片相匹配。

（我确信我花了很多时间在我自己的图表中调试相同的问题。也许Graphviz可以得到一个更新，以检查ltail参数是否对箭头有意义，反之亦然，并吐出更多有用的错误信息。）

如何在Graphviz Dot中创建从节点到子图的边？

2 个答案: