如何在pydot中的两个子图之间添加边? [英] How do I add edges between two subgraphs in pydot?

问题描述

有人知道如何在pydot的两个子图(簇)之间添加边吗?

Does anyone know how to add an edge between two subgraphs (clusters) in pydot?

callgraph = pydot.Dot(graph_type='digraph',fontname="Verdana")
cluster_foo=pydot.Cluster('foo',label='foo')
cluster_foo.add_node(pydot.Node('foo_method_1',label='method_1'))
callgraph.add_subgraph(cluster_foo)

cluster_bar=pydot.Cluster('bar',label='Component1')
cluster_bar.add_node(pydot.Node('bar_method_a'))
callgraph.add_subgraph(cluster_bar)

我尝试过:

callgraph.add_edge(pydot.Edge("foo","bar"))

但不起作用.它只是在初始图中再创建两个标记为"foo"和"bar"的节点，并在它们之间放置一条边！

but doesn't work. It just creates two more nodes labeled "foo" and "bar" in the initial graph and puts an edge between them!

任何人都可以帮忙吗?

推荐答案

• Graphviz要求边缘在2个簇中的 nodes 之间.
• 添加图形参数compound ='true'.
• 使用边缘参数lhead =和ltail =.
• Graphviz demands that an edge be between nodes in the 2 clusters.
• Add graph parameter compound='true'.
• Use edge parameters lhead= and ltail=.

因此您的代码将变为:

callgraph = pydot.Dot(graph_type='digraph', fontname="Verdana", compound='true')


cluster_foo=pydot.Cluster('foo',label='foo')
callgraph.add_subgraph(cluster_foo)

node_foo = pydot.Node('foo_method_1',label='method_1')
cluster_foo.add_node(node_foo)


cluster_bar=pydot.Cluster('bar',label='Component1')
callgraph.add_subgraph(cluster_bar)

node_bar = pydot.Node('bar_method_a')
cluster_bar.add_node(node_bar)


callgraph.add_edge(pydot.Edge(node_foo, node_bar, ltail=cluster_foo.get_name(), lhead=cluster_bar.get_name()))

这篇关于如何在pydot中的两个子图之间添加边?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！