在 Python 的 3D 散点图中点旁边显示坐标

Displaying Coordinates next to points in a 3D Scatter Plot with Python

我想简单地显示此 3D 散点图上每个点及其旁边的坐标。我看过这个:Matplotlib: Annotating a 3D scatter plot,但需要知道如何轻松获取和显示坐标。

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 = [1, 1, 2]
y = [1, 1, 2]
z = [1, 2, 2]

a = []
b = []
c = []
for item in x:
    a.append(float(item))
for item in y:
    b.append(float(item))
for item in z:
    c.append(float(item))
print(a, b, c)

r = np.array(a)
s = np.array(b)
t = np.array(c)

print(r, s, t)

ax.set_xlabel("x axis")
ax.set_ylabel("y axis")
ax.set_zlabel("z axis")

ax.scatter(r,s,zs = t, s=200, label='True Position')
plt.show()

谢谢。这么长的时间来提供一个更简单的代码介绍。任何关于缩短它的意见也会有所帮助。

mpl gallery为例:

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')

# You can convert to float array in several ways
r = np.array([1, 1, 2], dtype=np.float)
s = np.array([float(i) for i in [1, 1, 2]])
t = np.array([1, 2, 2]) * 1.0

ax.scatter(r,s,zs = t, s=200, label='True Position')
for x, y, z in zip(r, s, t):
    text = str(x) + ', ' + str(y) + ', ' + str(z)
    ax.text(x, y, z, text, zdir=(1, 1, 1))

ax.set_xlabel("x axis")
ax.set_ylabel("y axis")
ax.set_zlabel("z axis")

plt.show()

您可以更改 zdir 为文本提供不同的方向。