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# Spy Demos

Plot the sparsity pattern of arrays

    import matplotlib.pyplot as plt
    import numpy as np

    fig, axs = plt.subplots(2, 2)
    ax1 = axs[0, 0]
    ax2 = axs[0, 1]
    ax3 = axs[1, 0]
    ax4 = axs[1, 1]

    x = np.random.randn(20, 20)
    x[5, :] = 0.
    x[:, 12] = 0.

    ax1.spy(x, markersize=5)
    ax2.spy(x, precision=0.1, markersize=5)

    ax3.spy(x)
    ax4.spy(x, precision=0.1)

    plt.show()

Total running time of the script: ( 0 minutes 0.085 seconds)

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