在Python中使用matplotlib和带有numpy的数组绘制3D点

Question

I want to plot a point with an array using matplotlib, but it fails to read the array for data.

A test case is provided here, where if I use plt.plot([1], [1], [1], 'or') it works, but if I use plt.plot(Point[0], Point[1], Point[2], 'or') it fails generating the error:

TypeError: object of type 'numpy.int32' has no len()

Any suggestions?

Thanks for the help!

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

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

ax.set_xlabel('x')
ax.set_ylabel('y')
ax.set_zlabel('z')

ax.set_xlim3d(0,3)
ax.set_ylim3d(0,3)
ax.set_zlim3d(0,3)

Point = np.array([1,1,1])
plt.plot([1], [1], [1], 'or')
plt.plot(Point[0], Point[1], Point[2], 'or')

plt.show()

Answer 1

as @cel told in the comments plot expects sequence of points. Try this for instance:

plt.plot([[1]], [[1]], [[1]], 'or')
plt.plot([Point[0]], [Point[1]], [Point[2]], 'or')