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# Create a Point Cloud

Demonstrates use of visual.Markers to create a point cloud with a standard turntable camera to fly around with and a centered 3D Axis.

    import numpy as np
    import vispy.scene
    from vispy.scene import visuals

    #
    # Make a canvas and add simple view
    #
    canvas = vispy.scene.SceneCanvas(keys='interactive', show=True)
    view = canvas.central_widget.add_view()

    # generate data
    pos = np.random.normal(size=(100000, 3), scale=0.2)
    # one could stop here for the data generation, the rest is just to make the
    # data look more interesting. Copied over from magnify.py
    centers = np.random.normal(size=(50, 3))
    indexes = np.random.normal(size=100000, loc=centers.shape[0] / 2,
                               scale=centers.shape[0] / 3)
    indexes = np.clip(indexes, 0, centers.shape[0] - 1).astype(int)
    symbols = np.random.choice(['o', '^'], len(pos))
    scales = 10**(np.linspace(-2, 0.5, centers.shape[0]))[indexes][:, np.newaxis]
    pos *= scales
    pos += centers[indexes]

    # create scatter object and fill in the data
    scatter = visuals.Markers()
    scatter.set_data(pos, edge_width=0, face_color=(1, 1, 1, .5), size=5, symbol=symbols)

    view.add(scatter)

    view.camera = 'turntable'  # or try 'arcball'

    # add a colored 3D axis for orientation
    axis = visuals.XYZAxis(parent=view.scene)

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

Total running time of the script: (0 minutes 1.299 seconds)

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