

.. _sphx_glr_gallery_mplot3d_surface3d_3.py:


=========================
3D surface (checkerboard)
=========================

Demonstrates plotting a 3D surface colored in a checkerboard pattern.




.. image:: /gallery/mplot3d/images/sphx_glr_surface3d_3_001.png
    :align: center





.. code-block:: python


    from mpl_toolkits.mplot3d import Axes3D
    import matplotlib.pyplot as plt
    from matplotlib import cm
    from matplotlib.ticker import LinearLocator
    import numpy as np


    fig = plt.figure()
    ax = fig.gca(projection='3d')

    # Make data.
    X = np.arange(-5, 5, 0.25)
    xlen = len(X)
    Y = np.arange(-5, 5, 0.25)
    ylen = len(Y)
    X, Y = np.meshgrid(X, Y)
    R = np.sqrt(X**2 + Y**2)
    Z = np.sin(R)

    # Create an empty array of strings with the same shape as the meshgrid, and
    # populate it with two colors in a checkerboard pattern.
    colortuple = ('y', 'b')
    colors = np.empty(X.shape, dtype=str)
    for y in range(ylen):
        for x in range(xlen):
            colors[x, y] = colortuple[(x + y) % len(colortuple)]

    # Plot the surface with face colors taken from the array we made.
    surf = ax.plot_surface(X, Y, Z, facecolors=colors, linewidth=0)

    # Customize the z axis.
    ax.set_zlim(-1, 1)
    ax.w_zaxis.set_major_locator(LinearLocator(6))

    plt.show()

**Total running time of the script:** ( 0 minutes  0.074 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

     :download:`Download Python source code: surface3d_3.py <surface3d_3.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: surface3d_3.ipynb <surface3d_3.ipynb>`

.. rst-class:: sphx-glr-signature

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_
