Question

我正在使用Bokeh绘制Networkx图。但是，我在使用节点/边缘属性设置图形属性（例如边缘颜色和节点悬停属性）时遇到麻烦。

这与Bokeh文档（下面显示的代码，链接：https://bokeh.pydata.org/en/latest/docs/user_guide/graph.html）中提供的示例非常相似。但是，在运行示例时，我得到一个错误：

ERROR:bokeh.core.validation.check:E-1001 (BAD_COLUMN_NAME): Glyph refers to nonexistent column name: edge_color [renderer: GlyphRenderer(id='b8109e7f-9774-4353-905e-275f280952d7', ...)]

此外，悬停工具显示“ ???”用于“俱乐部”属性。知道为什么会这样吗？

import networkx as nx

from bokeh.io import show, output_file
from bokeh.models import Plot, Range1d, MultiLine, Circle, HoverTool, BoxZoomTool, ResetTool
from bokeh.models.graphs import from_networkx
from bokeh.palettes import Spectral4

# Prepare Data
G = nx.karate_club_graph()

SAME_CLUB_COLOR, DIFFERENT_CLUB_COLOR = "black", "red"
edge_attrs = {}

for start_node, end_node, _ in G.edges(data=True):
    edge_color = SAME_CLUB_COLOR if G.nodes[start_node]["club"] == G.nodes[end_node]["club"] else DIFFERENT_CLUB_COLOR
    edge_attrs[(start_node, end_node)] = edge_color

nx.set_edge_attributes(G, edge_attrs, "edge_color")

# Show with Bokeh
plot = Plot(plot_width=400, plot_height=400,
            x_range=Range1d(-1.1, 1.1), y_range=Range1d(-1.1, 1.1))
plot.title.text = "Graph Interaction Demonstration"

node_hover_tool = HoverTool(tooltips=[("index", "@index"), ("club", "@club")])
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=15, fill_color=Spectral4[0])
graph_renderer.edge_renderer.glyph = MultiLine(line_color="edge_color", line_alpha=0.8, line_width=1)
plot.renderers.append(graph_renderer)

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

使用节点和边属性设置图形悬停和颜色属性时出错

0 个答案: