Myujth

I'm trying to get separate hover tooltips for nodes and edges in Bokeh, but haven't been able to get it to work. Could someone point out what I'm doing wrong? I believe the code should look something like this:

from bokeh.io import show, output_notebook
from bokeh.models import Plot, Range1d, MultiLine, Circle, HoverTool
from bokeh.models.graphs import from_networkx, NodesAndLinkedEdges, EdgesAndLinkedNodes
import networkx as nx
output_notebook()

# Generate data
G = nx.karate_club_graph()
nx.set_edge_attributes(G, nx.edge_betweenness_centrality(G), "betweenness_centrality")

# Setup plot
plot = Plot(plot_width=400, plot_height=400,
 x_range=Range1d(-1.1, 1.1), y_range=Range1d(-1.1, 1.1))

graph_renderer = from_networkx(G, nx.spring_layout, scale=1, center=(0, 0))
graph_renderer.node_renderer.glyph = Circle(size=15)
graph_renderer.edge_renderer.glyph = MultiLine(line_alpha=0.8, line_width=1)

plot.renderers.append(graph_renderer)

# Add hover
node_hover_tool = HoverTool(renderers=[graph_renderer.node_renderer], 
 tooltips=[("index", "@index"), ("club", "@club")])
edge_hover_tool = HoverTool(renderers=[graph_renderer.edge_renderer], 
 tooltips=[("betweenness_centrality", "@betweenness_centrality")],
 line_policy="interp")

plot.add_tools(node_hover_tool, edge_hover_tool)

# Show
show(plot)

But I don't see any hover over with this. I've tried a few things to work around this:

• If I remove the renderers argument, I can get some hover over, but not specific to the glyphs I want.


• If I remove the renderers argument from both HoverTools, I'm able to get correct tooltips on the nodes along with a betweenness_centrality: ??
  


• If I remove the renderers argument from both HoverTools and add graph_renderer.inspection_policy = NodesAndLinkedEdges(), I get correct tooltips on the nodes


• If I remove the renderers argument from both HoverTools and add graph_renderer.inspection_policy = EdgesAndLinkedNodes(), I get correct tooltips on the edges

I believe this question was asked before on the google group here, but didn't get an answer.

Thanks for any help!