使用networkx在两个节点之间绘制多个边 [英] Drawing multiple edges between two nodes with networkx
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问题描述
我需要绘制一个有向图,其中两个节点之间有多个边缘(权重不同).也就是说,我有节点A和B,以及边(A,B)的长度= 2和(B,A)的长度= 3.
I need to draw a directed graph with more than one edge (with different weights) between two nodes. That is, I have nodes A and B and edges (A,B) with length=2 and (B,A) with length=3.
我已经尝试过同时使用G = nx.Digraph和G = nx.Multidigraph.绘制时,我只能查看一个边缘和一个标签. 有什么办法吗?
I have tried both using G=nx.Digraph and G=nx.Multidigraph. When I draw it, I only get to view one edge and only one of the labels. Is there any way to do it?
推荐答案
尝试以下操作:
import networkx as nx
import matplotlib.pyplot as plt
G = nx.DiGraph() #or G = nx.MultiDiGraph()
G.add_node('A')
G.add_node('B')
G.add_edge('A', 'B', length = 2)
G.add_edge('B', 'A', length = 3)
pos = nx.spring_layout(G)
nx.draw(G, pos)
edge_labels=dict([((u,v,),d['length'])
for u,v,d in G.edges(data=True)])
nx.draw_networkx_edge_labels(G, pos, edge_labels=edge_labels, label_pos=0.3, font_size=7)
plt.show()
这将为您返回此图形,该图形具有两个边缘以及边缘上显示的长度:
This will return you this graph with two edges and the length shown on the edge:
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