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# Demo Gridspec06

    import matplotlib.pyplot as plt
    import matplotlib.gridspec as gridspec
    import numpy as np
    from itertools import product

    def squiggle_xy(a, b, c, d):
        i = np.arange(0.0, 2*np.pi, 0.05)
        return np.sin(i*a)*np.cos(i*b), np.sin(i*c)*np.cos(i*d)

    fig = plt.figure(figsize=(8, 8))

    # gridspec inside gridspec
    outer_grid = gridspec.GridSpec(4, 4, wspace=0.0, hspace=0.0)

    for i in range(16):
        inner_grid = gridspec.GridSpecFromSubplotSpec(3, 3,
                subplot_spec=outer_grid[i], wspace=0.0, hspace=0.0)
        a = i // 4 + 1
        b = i % 4 + 1
        for j, (c, d) in enumerate(product(range(1, 4), repeat=2)):
            ax = plt.Subplot(fig, inner_grid[j])
            ax.plot(*squiggle_xy(a, b, c, d))
            ax.set_xticks([])
            ax.set_yticks([])
            fig.add_subplot(ax)

    all_axes = fig.get_axes()

    #show only the outside spines
    for ax in all_axes:
        for sp in ax.spines.values():
            sp.set_visible(False)
        if ax.is_first_row():
            ax.spines['top'].set_visible(True)
        if ax.is_last_row():
            ax.spines['bottom'].set_visible(True)
        if ax.is_first_col():
            ax.spines['left'].set_visible(True)
        if ax.is_last_col():
            ax.spines['right'].set_visible(True)

    plt.show()

Total running time of the script: ( 0 minutes 3.460 seconds)

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