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# Scatter plot and histograms

A scatter plot of 2D points with matching histograms.

    import numpy as np

    import vispy.plot as vp

    np.random.seed(2324)
    n = 100000
    data = np.empty((n, 2))
    lasti = 0
    for i in range(1, 20):
        nexti = lasti + (n - lasti) // 2
        scale = np.abs(np.random.randn(2)) + 0.1
        scale[1] = scale.mean()
        data[lasti:nexti] = np.random.normal(size=(nexti-lasti, 2),
                                             loc=np.random.randn(2),
                                             scale=scale / i)
        lasti = nexti
    data = data[:lasti]

    color = (0.3, 0.5, 0.8)
    n_bins = 100

    fig = vp.Fig(show=False)
    line = fig[0:4, 0:4].plot(data, symbol='o', width=0,
                              face_color=color + (0.02,), edge_color=None,
                              marker_size=4)
    line.set_gl_state(depth_test=False)
    fig[4, 0:4].histogram(data[:, 0], bins=n_bins, color=color, orientation='h')
    fig[0:4, 4].histogram(data[:, 1], bins=n_bins, color=color, orientation='v')

    if __name__ == '__main__':
        fig.show(run=True)

Total running time of the script: (0 minutes 8.502 seconds)

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