动画化 3D 线框图

一个非常简单的 3D 图“动画”。另请参见 旋转 3D 图.

（此示例在构建文档库时会被跳过，因为它有意需要很长时间才能运行。）

import time

import matplotlib.pyplot as plt
import numpy as np

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

# Make the X, Y meshgrid.
xs = np.linspace(-1, 1, 50)
ys = np.linspace(-1, 1, 50)
X, Y = np.meshgrid(xs, ys)

# Set the z axis limits, so they aren't recalculated each frame.
ax.set_zlim(-1, 1)

# Begin plotting.
wframe = None
tstart = time.time()
for phi in np.linspace(0, 180. / np.pi, 100):
    # If a line collection is already remove it before drawing.
    if wframe:
        wframe.remove()
    # Generate data.
    Z = np.cos(2 * np.pi * X + phi) * (1 - np.hypot(X, Y))
    # Plot the new wireframe and pause briefly before continuing.
    wframe = ax.plot_wireframe(X, Y, Z, rstride=2, cstride=2)
    plt.pause(.001)

print('Average FPS: %f' % (100 / (time.time() - tstart)))