>>> """
============
3D errorbars
============

An example of using errorbars with upper and lower limits in mplot3d.
"""
... 
... import matplotlib.pyplot as plt
... import numpy as np
... 
... ax = plt.figure().add_subplot(projection='3d')
... 
... # setting up a parametric curve
... t = np.arange(0, 2*np.pi+.1, 0.01)
... x, y, z = np.sin(t), np.cos(3*t), np.sin(5*t)
... 
... estep = 15
... i = np.arange(t.size)
... zuplims = (i % estep == 0) & (i // estep % 3 == 0)
... zlolims = (i % estep == 0) & (i // estep % 3 == 2)
... 
... ax.errorbar(x, y, z, 0.2, zuplims=zuplims, zlolims=zlolims, errorevery=estep)
... 
... ax.set_xlabel("X label")
... ax.set_ylabel("Y label")
... ax.set_zlabel("Z label")
... 
... plt.show()
...