根据列名称为NetworkX节点分配颜色 | 根据列名称为NetworkX节点分配颜色

本文介绍了根据列名称为NetworkX节点分配颜色的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试使用NetworkX和Bokeh构建网络图.我正在使用NetworkX from_pandas_edgelist函数为图形添加数据.我想根据初始数据输入中的列为图的节点着色.

I am attempting to build a network graph using NetworkX and Bokeh. I am using the NetworkX from_pandas_edgelist function to add data for the graph. I would like to color the node of the graph based on the column in the initial data input.

relation数据帧如下:

company   client

Google    AT&T
Google    Cisco
Amazon    Facebook
Amazon    Snap
Amazon    Microsoft
Apple     Intel
Apple     IBM
Apple     Visa

上面的代码片段只是DataFrame的一部分.

The above snippet is only a portion of the DataFrame.

我希望company中的所有节点以不同的颜色返回client.

I would like all of the nodes from company to return in a different color to client.

下面的代码生成一个网络图，其中所有节点都是相同的颜色.

The code below produces a network graph where all nodes are the same color.

G=nx.from_pandas_edgelist(relation, 'company', 'client')

# Show with Bokeh
plot = Plot(plot_width=1000, plot_height=800,
            x_range=Range1d(-1.1, 1.1), y_range=Range1d(-1.1, 1.1))
plot.title.text = "Company - Client Network"

node_hover_tool = HoverTool(tooltips=[("Company Name", "@index")])
plot.add_tools(node_hover_tool, BoxZoomTool(), ResetTool())

graph_renderer = from_networkx(G, nx.spring_layout, scale=1, center=(0, 0))

graph_renderer.node_renderer.glyph = Circle(size=20)

graph_renderer.edge_renderer.glyph = MultiLine(line_color="red", line_alpha=0.8, line_width=1)
plot.renderers.append(graph_renderer)

output_file("interactive_graphs.html")
show(plot)

任何人都可以提供的任何帮助将不胜感激.

Any assistance anyone could provide would be greatly appreciated.

推荐答案

在旧版编辑之后:

不能提供太多的上下文信息，因为我对bokeh并不十分熟悉，但是看起来您可以使用与我最初的方法类似的方法，而不必通过"color_map"来完成绘制功能，因此必须粘贴此处graph_renderer.node_renderer.data_source.data['colors']中的数据无论如何，这似乎可以解决问题，祝你好运.老兄.

Can't give too much context as I am not super familiar with bokeh, but looks like you can use a similar approach to what I did initially just instead of passing the "color_map" do your draw function you have to stick your data in here graph_renderer.node_renderer.data_source.data['colors']Anyway this seems to do the job, Good luck dude.

relation = pd.DataFrame({
                "company":["Google", "Google", "Amazon", "Amazon", "Amazon",
                            "Apple", "Apple", "Apple"],
                "client":["AT&T", "Cisco", "Facebook", "Snap", "Microsoft",
                          "Intel", "IBM", "Visa"]})

G=nx.from_pandas_edgelist(relation, 'company', 'client')
colors = []

for node in G:
    if node in relation["client"].values:
        colors.append("blue")
    else: colors.append("green")

plot = Plot(plot_width=1000, plot_height=800,
            x_range=Range1d(-1.1, 1.1), y_range=Range1d(-1.1, 1.1))
plot.title.text = "Company - Client Network"

node_hover_tool = HoverTool(tooltips=[("Company Name", "@index")])
plot.add_tools(node_hover_tool, BoxZoomTool(), ResetTool())

graph_renderer = from_networkx(G, nx.spring_layout, scale=1, center=(0, 0))

graph_renderer.node_renderer.data_source.data['colors'] = colors
graph_renderer.node_renderer.glyph = Circle(size=20, fill_color='colors')

graph_renderer.edge_renderer.glyph = MultiLine(line_color="red", line_alpha=0.8, line_width=1)
plot.renderers.append(graph_renderer)

output_file("boo.html")
show(plot)

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