我正在使用 NetworkX 1.9.1。
我有一个需要按位置组织的图表,然后导出为 graphml 格式。
我已经尝试过这个问题的代码。它不起作用,这是我的示例
import networkx as nx
import matplotlib.pyplot as plt
G = nx.read_graphml("colored.graphml")
pos=nx.spring_layout(G) # an example of quick positioning
nx.set_node_attributes(G, 'pos', pos)
nx.write_graphml(G, "g.graphml")
nx.draw_networkx(G, pos)
plt.savefig("g.pdf")
这是我得到的错误,问题是如何保存位置(graphml 不接受数组)。
C:\Anaconda\python.exe C:/Users/sturaroa/Documents/PycharmProjects/node_labeling_test.py
Traceback (most recent call last):
File "C:/Users/sturaroa/Documents/PycharmProjects/node_labeling_test.py", line 11, in <module>
nx.write_graphml(G, "g.graphml")
File "<string>", line 2, in write_graphml
File "C:\Anaconda\lib\site-packages\networkx\utils\decorators.py", line 220, in _open_file
result = func(*new_args, **kwargs)
File "C:\Anaconda\lib\site-packages\networkx\readwrite\graphml.py", line 82, in write_graphml
writer.add_graph_element(G)
File "C:\Anaconda\lib\site-packages\networkx\readwrite\graphml.py", line 350, in add_graph_element
self.add_nodes(G,graph_element)
File "C:\Anaconda\lib\site-packages\networkx\readwrite\graphml.py", line 307, in add_nodes
self.add_attributes("node", node_element, data, default)
File "C:\Anaconda\lib\site-packages\networkx\readwrite\graphml.py", line 300, in add_attributes
scope=scope, default=default_value)
File "C:\Anaconda\lib\site-packages\networkx\readwrite\graphml.py", line 288, in add_data
'%s as data values.'%element_type)
networkx.exception.NetworkXError: GraphML writer does not support <type 'numpy.ndarray'> as data values.
我的印象是,我最好将位置定义为 2 个单独的节点属性 x 和 y,并分别保存它们,以 graphml 格式为它们中的每一个定义一个键,如下所示。
但是,我对 Python 不是很熟悉,在我来回迭代弄得一团糟之前,我想听听您的意见。
谢谢。