在 twopi 中控制间距 (Graphviz)

Question

我是 Graphviz 的新手，我正在尝试绘制以实体为中心的树（我正在使用 twopi 命令）。

• 如果我输入 overlap=true 它会重叠，即使重叠标签周围有很多空间。
• 如果我输入overlap=false，标签会变得太小。

第一种情况如何不重叠？

完整代码：

digraph g {
    graph [ fontname = "Helvetica",
        fontsize = 10,
        size = "500,500",
        splines=true,
        overlap=false,
        ratio=.5 ];
    node [  shape = plaintext,
        fontname = "Helvetica" ];

    root="owl:Thing";
    "owl:Thing" -> "Work";
    "Work" -> "WrittenWork";
    "Work" -> "Software";
    "Work" -> "Website";
    "Work" -> "Film";
    "owl:Thing" -> "Agent";
    "Agent" -> "Organisation";
    "Organisation" -> "Non-ProfitOrganisation";
    "Organisation" -> "GeopoliticalOrganisation";
    "Organisation" -> "SambaSchool";
    "Agent" -> "Person";
    "Person" -> "Athlete";
    "Person" -> "OfficeHolder";
    "Person" -> "Astronaut";
    "Person" -> "Philosopher";
    "Person" -> "Architect";
    "owl:Thing" -> "Drug";
    "owl:Thing" -> "Place";
    "Place" -> "SiteOfSpecialScientificInterest";
    "Place" -> "PopulatedPlace";
    "PopulatedPlace" -> "Country";
    "PopulatedPlace" -> "Continent";
    "PopulatedPlace" -> "Atoll";
    "Place" -> "ProtectedArea";
    "Place" -> "ArchitecturalStructure";
    "Place" -> "HistoricPlace";
    "Place" -> "NaturalPlace";
    "NaturalPlace" -> "Mountain";
    "NaturalPlace" -> "Volcano";
    "NaturalPlace" -> "MountainRange";
}

谢谢，

阿莱西奥

Answer 1

对于这个特定的图表，您可以使用overlap=true，然后递增ranksep，直到不再有标签重叠。 ranksep=1.3 似乎物有所值。