Python 在节点上绘制图形

我有一组簇，提取了每个簇的质心坐标，并将其绘制在散点图上。以下是坐标：

112 59
214 90
244 182
254 167
255 112
261 139
283 152
291 134
314 138
334 49
333 34

下面是绘制散点图的代码：

import pylab as pl
import matplotlib.pyplot as plt
import numpy as np

data = np.loadtxt('centroid_coordinates.txt')
pl.scatter(data[:,0], data[:,1])
pl.xlabel('x-coordinate')
pl.ylabel('y-coordinate')


#print result
plt.title('Centroids')
pl.show()

…其结果如下：

---

现在我想把质心节点连接在一起，形成一个图表，显示它的空间连接性关系。有什么建议吗

networkx

是你的朋友：

import matplotlib.pyplot as plt
import networkx as nx
import itertools

nodes = [[112, 59],
[214, 90],
[244, 182],
[254, 167],
[255, 112],
[261, 139],
[283, 152],
[291, 134],
[314, 138],
[334, 49],
[333, 34]]

# initialise empty graph
G = nx.Graph()

# create dictionary for node positions
positions={}
for node, properties in enumerate(nodes):
    positions[node] = properties

# add the nodes to the graph
G.add_nodes_from(positions.keys())

# list all possible combinations of nodes within the graph    
edges = itertools.product(positions.keys(), positions.keys())

# and add them to the graph
G.add_edges_from(edges)

# draw nodes and edges, positioned at the centroids
nx.draw_networkx_nodes(G, pos=positions)
nx.draw_networkx_edges(G, pos=positions)

---

networkx

是您的朋友：

import matplotlib.pyplot as plt
import networkx as nx
import itertools

nodes = [[112, 59],
[214, 90],
[244, 182],
[254, 167],
[255, 112],
[261, 139],
[283, 152],
[291, 134],
[314, 138],
[334, 49],
[333, 34]]

# initialise empty graph
G = nx.Graph()

# create dictionary for node positions
positions={}
for node, properties in enumerate(nodes):
    positions[node] = properties

# add the nodes to the graph
G.add_nodes_from(positions.keys())

# list all possible combinations of nodes within the graph    
edges = itertools.product(positions.keys(), positions.keys())

# and add them to the graph
G.add_edges_from(edges)

# draw nodes and edges, positioned at the centroids
nx.draw_networkx_nodes(G, pos=positions)
nx.draw_networkx_edges(G, pos=positions)

---

您可以使用Python包构建图形并显示它们。谢谢，我现在就看一看。您可以使用Python包构建图形并显示它们。谢谢，我现在就看一看。只是一个简单的问题。有没有办法不列出所有的组合？仅仅是一个简单的连通图就可以了，因为有些图有太多的节点，而图变得太拥挤了。干杯查看的文档。您可以传递一个附加参数，

edgelist

，该参数允许您指定要显示的参数。只需一个简单的问题。有没有办法不列出所有的组合？仅仅是一个简单的连通图就可以了，因为有些图有太多的节点，而图变得太拥挤了。干杯查看的文档。您可以传递一个附加参数，

edgelist

，该参数允许您指定要显示的参数。