Graphviz 重叠边缘标签

Question

我正在研究 a Python script，它可以发现网络中的所有 Cisco 设备，现在我希望添加一个为用户创建图表的选项。

我正在使用 graphviz Python 模块并且仍在编写代码，但这是它此时生成的内容：

graph {
graph [nodesep=1.5 ranksep=1]
edge [fontsize=10 weight=0.5]
    "R3.lab"
        "R3.lab" -- "R1.lab" [headlabel="Fa0/1" taillabel="Fa0/1"]
    "R2.lab"
        "R2.lab" -- "R1.lab" [headlabel="Fa3/0" taillabel="Fa3/0"]
    "R2.lab"
        "R2.lab" -- "R1.lab" [headlabel="Fa1/0" taillabel="Fa0/1"]
    "R4.lab"
        "R4.lab" -- "R1.lab" [headlabel="Fa4/0" taillabel="Fa4/0"]
    "R2.lab"
        "R2.lab" -- "R3.lab" [headlabel="Fa0/0" taillabel="Fa0/0"]
    "R5.lab"
        "R5.lab" -- "R3.lab" [headlabel="Fa4/0" taillabel="Fa3/0"]
    "R4.lab"
        "R4.lab" -- "R3.lab" [headlabel="Fa1/0" taillabel="Fa0/0"]
    "R4.lab"
        "R4.lab" -- "R2.lab" [headlabel="Fa1/0" taillabel="Fa1/0"]
    "R4.lab"
        "R4.lab" -- "R5.lab" [headlabel="Fa0/1" taillabel="Fa0/1"]
}

问题在于某些节点的边标签（例如 R4）彼此重叠，很难看出哪个标签适用于哪条边。这让我想到了一个问题，我该如何确保不会发生这种重叠？

解决方案需要是动态的（而不是仅在此图中修复它），以便它也适用于其他网络。

如有任何建议，我们将不胜感激。谢谢。

Answer 1

您可以尝试在节点中使用边距，使它们更大。边缘中的空标签也有助于创建更多 space.

试试这张图：

graph {
    graph [bgcolor="#333333" fontcolor=white fontsize=16 label="Network Map" rankdir=BT]
    node [color="#006699" fillcolor="#006699" fontcolor=white fontname=Helvetica margin=0.4 shape=box style=filled]
    edge [arrowhead=open color=green fontcolor=white fontname=Courier fontsize=14 style=dashed]
        R4
        R5
        R1
        R2
        R3
            R2 -- R3 [label="            " headlabel="Fa0/0" taillabel="Fa0/0"]
            R4 -- R2 [label="            " headlabel="Fa1/0" taillabel="Fa1/0"]
            R2 -- R1 [label="            " headlabel="Fa3/0" taillabel="Fa3/0"]
            R4 -- R1 [label="            " headlabel="Fa4/0" taillabel="Fa4/0"]
            R4 -- R5 [label="            " headlabel="Fa0/1" taillabel="Fa0/1"]
            R3 -- R1 [label="            " headlabel="Fa0/1" taillabel="Fa0/1"]
            R2 -- R1 [label="            " headlabel="Fa0/1" taillabel="Fa1/0"]
            R5 -- R3 [label="            " headlabel="Fa3/0" taillabel="Fa4/0"]
}

您可以在要点中查看完整代码：https://gist.github.com/natenka/4d991cacc69e7353c84504c1581a5014

Graphviz 重叠边缘标签

Graphviz overlapping edge labels

python

graph

dot

graphviz

python-2.7