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        "\n# Fractional Brownian field\n\n.. codeauthor:: Fr\u00e9d\u00e9ric Richard <frederic.richard_at_univ-amu.fr>\n\nThis example shows how to simulate a fractional Brownian field with\na prescribed Hurst index.\n"
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        "import numpy as np\nfrom afbf import tbfield\n\nN = 256  # Image size.\nH = 0.2  # Hurst index in (0, 1).\n\n# Define the field.\nZ = tbfield('fbf')\n\n# Change the parameter of the Hurst function.\nZ.hurst.ChangeParameters(np.array([[H]]))\nZ.NormalizeModel()\n\n# Simulate the field.\nz = Z.Simulate()\n\n# Display the simulation.\nz.Display()"
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