无法在bokeh网络图中填充“悬停工具提示"值 [英] Cannot populate Hover Tooltip values in bokeh network plot

问题描述

我有一个网络，有这样的节点:

I have a network, with nodes as such:

[('user_0', {'pk': 2, 'tname': 'user_0'}), ('user_1', {'pk': 3, 'tname': 'user_1'}), ('user_2', {'pk': 4, 'tname': 'user_2'}), ('user_3', {'pk': 5, 't': 'user_3'}), ('user_4', {'pk': 6, 't': 'user_4'})]

我的绘图代码本质上是以下两个示例的组合文档.如下:

        # Create plot
    plot = Plot(plot_width=600, 
                plot_height=600,
                x_range=Range1d(-1.1,1.1), 
                y_range=Range1d(-1.1,1.1))

    # Set title
    plot.title.text = "Graph Interaction Demonstration"

    # Create and set up graph renderer ------------------------------------
    # Use renderer to plot from network x, with given layout
    graph = self.as_plottable()

    nodes = list(graph .nodes)
    n_nodes = len(list(graph .nodes))
    graph_renderer = from_networkx(graph ,
                                   nx.shell_layout,
                                   nlist=[nodes[0:int(n_nodes/3)], 
                                          nodes[int(n_nodes/3):2*int(n_nodes/3)],
                                          nodes[2*int(n_nodes/3):]],
                                   scale=1, 
                                   center=(0,0))

    # Add interaction tools
    node_hover_tool = HoverTool(tooltips=[
            ('Name','@tname'),
            ('ID','@pk')
            ])
    plot.add_tools(node_hover_tool, 
                   BoxZoomTool(),
                   ResetTool())

    graph_renderer.node_renderer.glyph = Circle(size=8, fill_color=Spectral4[0])
    graph_renderer.node_renderer.selection_glyph = Circle(size=8, fill_color=Spectral4[2])
    graph_renderer.node_renderer.hover_glyph = Circle(size=12, fill_color=Spectral4[1])

    graph_renderer.edge_renderer.glyph = MultiLine(line_color="#BFBFBF", line_alpha=0.8, line_width=3)
    graph_renderer.edge_renderer.selection_glyph = MultiLine(line_color=Spectral4[2], line_width=3)
    graph_renderer.edge_renderer.hover_glyph = MultiLine(line_color=Spectral4[1], line_width=3)

    # Provide logic for selection of graph components
    graph_renderer.selection_policy = NodesAndLinkedEdges()

    # Provide logic for inspection of graph components
    graph_renderer.inspection_policy = EdgesAndLinkedNodes()

    # Add network graph renderer to plot
    plot.renderers.append(graph_renderer)

    # Output graph to a file
    output_file(filename)

    # Plot graph
    show(plot)

我已经尝试过按顺序排列，更改节点属性的名称以及进行其他各种调整，但是我的hovertip数据始终显示为名称:???"，"ID:???".我已经读到，当您的数据源中实际上没有正确的列时，可能会发生这种情况，但是我打印了dict:

I've tried shuffling around the order of things, changing the names of my node attributes, and various other adjustments, but my hovertip data always displays as "Name: ???", "ID: ???". I've read that this can happen when you don't actually have the right columns in your data source, but I printed the dict:

graph_renderer.node_renderer.data_source.data

它同时具有"tname"和"pk"的条目.我很困惑有什么想法吗?

And it had entries for both "tname" and "pk". I'm stumped. Any ideas?

推荐答案

解决了此问题，问题在于将我的检查策略设置为EdgesAndLinkedNodes().这导致我的工具提示在边缘而不是节点中寻找信息.

Solved it, the problem was setting my inspection policy to EdgesAndLinkedNodes(). This was causing my tooltips to look for information in the edges, rather than the nodes.

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