.. _mplot3d-hist3d_demo:

mplot3d example code: hist3d_demo.py
====================================



.. plot:: /home/tcaswell/source/my_source/matplotlib/doc/mpl_examples/mplot3d/hist3d_demo.py

::

    from mpl_toolkits.mplot3d import Axes3D
    import matplotlib.pyplot as plt
    import numpy as np
    
    fig = plt.figure()
    ax = fig.add_subplot(111, projection='3d')
    x, y = np.random.rand(2, 100) * 4
    hist, xedges, yedges = np.histogram2d(x, y, bins=4)
    
    elements = (len(xedges) - 1) * (len(yedges) - 1)
    xpos, ypos = np.meshgrid(xedges[:-1] + 0.25, yedges[:-1] + 0.25)
    
    xpos = xpos.flatten()
    ypos = ypos.flatten()
    zpos = np.zeros(elements)
    dx = 0.5 * np.ones_like(zpos)
    dy = dx.copy()
    dz = hist.flatten()
    
    ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='b', zsort='average')
    
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)