python绘制3d点云_python – 来自点云的3D凸包

我知道这已经过时了,但是我是从Google来到这里的,所以我认为其他人也可能.

问题仅出在您使用的绘图方法中.

一个单纯形是由3个点定义的nD三角形.

但是绘图功能必须循环回到最后一个点,否则只绘制3个单面边中的2个.

import numpy as np

import matplotlib.pyplot as plt

from mpl_toolkits.mplot3d import Axes3D

from scipy.spatial import ConvexHull

# 8 points defining the cube corners

pts = np.array([[0, 0, 0], [1, 0, 0], [1, 1, 0], [0, 1, 0],

[0, 0, 1], [1, 0, 1], [1, 1, 1], [0, 1, 1], ])

hull = ConvexHull(pts)

fig = plt.figure()

ax = fig.add_subplot(111, projection="3d")

# Plot defining corner points

ax.plot(pts.T[0], pts.T[1], pts.T[2], "ko")

# 12 = 2 * 6 faces are the simplices (2 simplices per square face)

for s in hull.simplices:

s = np.append(s, s[0]) # Here we cycle back to the first coordinate

ax.plot(pts[s, 0], pts[s, 1], pts[s, 2], "r-")

# Make axis label

for i in ["x", "y", "z"]:

[enter image description here][1]eval("ax.set_{:s}label('{:s}')".format(i, i))

plt.show()