Note

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# Visualize NetworkX Graph

This example demonstrates how to visualise a NetworkX graph using a VisPy Graph.

Out:

    /build/python-vispy-xIf0nH/python-vispy-0.14.1/examples/scene/graph.py:27: FutureWarning: adjacency_matrix will return a scipy.sparse array instead of a matrix in Networkx 3.0.
      graph = nx.adjacency_matrix(

    import sys

    import networkx as nx

    from vispy import app, scene
    from vispy.visuals.graphs import layouts

    canvas = scene.SceneCanvas(title='Simple NetworkX Graph', size=(600, 600),
                               bgcolor='white', show=True)
    view = canvas.central_widget.add_view('panzoom')

    graph = nx.adjacency_matrix(
        nx.fast_gnp_random_graph(500, 0.005, directed=True))
    layout = layouts.get_layout('force_directed', iterations=100)

    visual = scene.visuals.Graph(
        graph, layout=layout, line_color='black', arrow_type="stealth",
        arrow_size=30, node_symbol="disc", node_size=20,
        face_color=(1, 0, 0, 0.2), border_width=0.0, animate=True, directed=False,
        parent=view.scene)

    @canvas.events.draw.connect
    def on_draw(event):
        if not visual.animate_layout():
            canvas.update()

    if __name__ == '__main__':
        if sys.flags.interactive != 1:
            app.run()

Total running time of the script: ( 0 minutes 2.403 seconds)

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