python写一段读取并可视化点云的代码

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

# 读取点云
points = np.loadtxt('points.txt')

# 创建3D图形
fig = plt.figure()
ax = Axes3D(fig)

# 绘制点云
ax.scatter(points[:,0], points[:,1], points[:,2])

# 显示图形
plt.show()