控制間距在twopi（Graphviz）

Question

我是Graphviz的新手，我正在嘗試繪制一個以實體為中心的樹（我正在使用twopi命令）。

• 如果我把overlap=true重疊，即使重疊標簽有很多空間，它也會重疊。
• 如果我把overlap=false ，標簽變得太小。

如何在沒有重疊的情況下獲得第一種情況？

完整代碼：

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";
}

謝謝，

阿萊西奧

Answer 1

對於此特定圖形，您可以使用overlap=true然后增加ranksep直到沒有標簽重疊為止。 ranksep=1.3似乎是一個很好的價值。