将所有箭头指向matplotlib 3D散点中的原点

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

# 创建数据
n = 10
x = np.random.rand(n)
y = np.random.rand(n)
z = np.random.rand(n)

# 创建3D图形对象
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

# 绘制散点图
sc = ax.scatter(x, y, z, c='b', marker='o')

# 添加指向原点的箭头
for i in range(n):
    ax.quiver(x[i], y[i], z[i], -x[i], -y[i], -z[i], length=0.1, color='r')

# 设置坐标轴标签
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')

# 显示图形
plt.show()