如何让Graphviz箭头仅连接到节点的顶部

要让所有箭头都连接到目标节点的顶部，可通过给边添加headport=n属性（n代表north，即顶部）实现。若希望边从源节点底部出发、保持垂直方向，还可配合tailport=s属性（s代表south，即底部）。

修改后的完整代码 #

digraph {
 splines=ortho
 layout=dot
 TBbalance="min"
 node [shape="rect"]

"25083349-e2b0-4624-9171-b733eaef9c09" [label="AA-012"]
"8e449c92-3c1a-4cac-a41c-3778a6a6e3c8" [label="AA-013"]
"6101a33f-78b9-43cf-93ec-db8b1ef1acde" [label="AA-014"]
"530e551f-6aa5-4701-af61-111823233c79" [label="AA-015"]
"5b8c2f91-da0a-4722-b4f3-84ebaf201a33" [label="AA-016"]
"99657f0d-0d7f-487c-ba87-3ece9ae0a4dd" [label="AA-017"]
"44353eea-c41d-417a-8354-e0205baf5a11" [label="AA-020"]
"2fbe0364-41dd-4e0d-b8ef-cae381b0a79b" [label="AA-019"]
"c2f2bb75-815c-4afa-8e8e-7f1e6e388b7c" [label="AA-018"]
"6128a8fc-fceb-4b5d-abd4-b100355f357a" [label="AA-021"]
"1ed93bca-0dca-4f10-b9e5-5a17d8cd12b0" [label="AA-022"]
"b73bb88b-bcf8-4301-bdcc-497318f11ebd" [label="AA-023"]
"9aba5990-adc8-4796-a9e0-6e14e4afbd21" [label="AA-024"]
"8c504904-e97b-4227-a126-8bd603d0df1f" [label="AA-025"]

// 为所有边添加port属性，强制箭头指向目标节点顶部，从源节点底部出发
"25083349-e2b0-4624-9171-b733eaef9c09"->"99657f0d-0d7f-487c-ba87-3ece9ae0a4dd" [headport=n, tailport=s]
"25083349-e2b0-4624-9171-b733eaef9c09"->"44353eea-c41d-417a-8354-e0205baf5a11" [headport=n, tailport=s]
"25083349-e2b0-4624-9171-b733eaef9c09"->"c2f2bb75-815c-4afa-8e8e-7f1e6e388b7c" [headport=n, tailport=s]
"6101a33f-78b9-43cf-93ec-db8b1ef1acde"->"8e449c92-3c1a-4cac-a41c-3778a6a6e3c8" [headport=n, tailport=s]
"6101a33f-78b9-43cf-93ec-db8b1ef1acde"->"b73bb88b-bcf8-4301-bdcc-497318f11ebd" [headport=n, tailport=s]
"5b8c2f91-da0a-4722-b4f3-84ebaf201a33"->"8c504904-e97b-4227-a126-8bd603d0df1f" [headport=n, tailport=s]
"99657f0d-0d7f-487c-ba87-3ece9ae0a4dd"->"1ed93bca-0dca-4f10-b9e5-5a17d8cd12b0" [headport=n, tailport=s]
"99657f0d-0d7f-487c-ba87-3ece9ae0a4dd"->"9aba5990-adc8-4796-a9e0-6e14e4afbd21" [headport=n, tailport=s]
"44353eea-c41d-417a-8354-e0205baf5a11"->"6128a8fc-fceb-4b5d-abd4-b100355f357a" [headport=n, tailport=s]
"44353eea-c41d-417a-8354-e0205baf5a11"->"9aba5990-adc8-4796-a9e0-6e14e4afbd21" [headport=n, tailport=s]
"c2f2bb75-815c-4afa-8e8e-7f1e6e388b7c"->"530e551f-6aa5-4701-af61-111823233c79" [headport=n, tailport=s]
"c2f2bb75-815c-4afa-8e8e-7f1e6e388b7c"->"b73bb88b-bcf8-4301-bdcc-497318f11ebd" [headport=n, tailport=s]
"6128a8fc-fceb-4b5d-abd4-b100355f357a"->"b73bb88b-bcf8-4301-bdcc-497318f11ebd" [headport=n, tailport=s]
"1ed93bca-0dca-4f10-b9e5-5a17d8cd12b0"->"2fbe0364-41dd-4e0d-b8ef-cae381b0a79b" [headport=n, tailport=s]
"1ed93bca-0dca-4f10-b9e5-5a17d8cd12b0"->"b73bb88b-bcf8-4301-bdcc-497318f11ebd" [headport=n, tailport=s]
"8c504904-e97b-4227-a126-8bd603d0df1f"->"c2f2bb75-815c-4afa-8e8e-7f1e6e388b7c" [headport=n, tailport=s]
}

关键说明 #

• headport=n：强制箭头指向目标节点的顶部（north方向）
• tailport=s：强制边从源节点的底部（south方向）出发，保证边的垂直走向
• 若仅需调整特定节点的边，可只给对应边添加属性，无需全局设置

内容的提问来源于stack exchange，提问作者norman