Networkx drawing and common library function coordinate drawing

explain ： Not stitching , Mainly take notes by yourself , Recently learned about a process

1. The creation of a figure

G = nx.Graph() # Create an undirected graph

G = nx.DiGraph() # Create a directed graph

G = nx.MultiGraph() # Create multiple undirected graphs

G = nx.MultiDigraph() # Create multiple digraphs AttributeError: module ‘networkx’ has no attribute ‘MultiDigraph’

G.clear() # Empty map

2.Networkx Parameters of drawing and sorting function ,networkx, drawing , Function parameter

Common functions 1

Plot function 2

3.Networkx Library draws a directed graph , Customize and fix the coordinates of each node

If you want to use an undirected graph , When defining a graph, just change , Refer to below
Fixed coordinates

import networkx as nx
import matplotlib.pyplot as plt


def main():
    G = nx.DiGraph()
    #  Add corresponding edges and points 
    for i in range(1, 10):
        G.add_node(i, desc='v'+str(i))  #  Node name cannot be str,desc Is the label, that is, the node name 
    G.add_edge(1, 2, name='6')          #  Add edge ,  Parameters name As the edge weights 
    G.add_edge(1, 3, name='4')
    G.add_edge(1, 4, name='5')
    G.add_edge(2, 5, name='1')
    G.add_edge(3, 5, name='1')
    G.add_edge(4, 6, name='2')
    G.add_edge(5, 7, name='9')
    G.add_edge(5, 8, name='7')
    G.add_edge(6, 8, name='4')
    G.add_edge(7, 9, name='2')
    G.add_edge(8, 9, name='4')

    pos = [(1, 3), (1, 3), (2, 4), (2, 2),  (2, 1),  (3, 3),  (4, 1),  (5, 4),  (5, 2),  (6, 3)]  # pos The list starts at 0 Bit start , But my definition is from the node 1 Start , Here let the first two coordinates be the same 
    #  Press pos Draw nodes at the specified position , No tag no value 
    nx.draw_networkx(G, pos, with_labels=None)
    #  Draw a label 
    node_labels = nx.get_node_attributes(G, 'desc')
    nx.draw_networkx_labels(G, pos, labels=node_labels)
    #  Draw edge weights 
    edge_labels = nx.get_edge_attributes(G, 'name')
    nx.draw_networkx_edge_labels(G, pos, edge_labels=edge_labels)

    plt.title('AOE_CPM', fontsize=10)
    plt.show()


if __name__ == '__main__':
    main()

4.gephi、Graphviz And other drawing tools

The coder or the code draws points and lines according to the data , Tools are too troublesome , Never tried.
drawing tools