在 python-matplotlib 中绘制 3D 多边形
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Plotting 3D Polygons in python-matplotlib
提问by Developer
I was unsuccessful browsing web for a solution for the following simple question:
我未能成功浏览网页以寻求以下简单问题的解决方案：
How to draw 3D polygon (say a filled rectangle or triangle) using vertices values? I have tried many ideas but all failed, see:
如何使用顶点值绘制 3D 多边形（比如填充矩形或三角形）？我尝试了很多想法但都失败了，请参阅：
from mpl_toolkits.mplot3d import Axes3D
from matplotlib.collections import PolyCollection
import matplotlib.pyplot as plt
fig = plt.figure()
ax = Axes3D(fig)
x = [0,1,1,0]
y = [0,0,1,1]
z = [0,1,0,1]
verts = [zip(x, y,z)]
ax.add_collection3d(PolyCollection(verts),zs=z)
plt.show()
I appreciate in advance any idea/comment.
我提前感谢任何想法/评论。
Updates based on the accepted answer:
基于接受的答案的更新：
import mpl_toolkits.mplot3d as a3
import matplotlib.colors as colors
import pylab as pl
import scipy as sp
ax = a3.Axes3D(pl.figure())
for i in range(10000):
vtx = sp.rand(3,3)
tri = a3.art3d.Poly3DCollection([vtx])
tri.set_color(colors.rgb2hex(sp.rand(3)))
tri.set_edgecolor('k')
ax.add_collection3d(tri)
pl.show()
Here is the result:
结果如下：
采纳答案by DSM
I think you've almost got it. Is this what you want?
我想你已经快明白了。这是你想要的吗？
from mpl_toolkits.mplot3d import Axes3D
from mpl_toolkits.mplot3d.art3d import Poly3DCollection
import matplotlib.pyplot as plt
fig = plt.figure()
ax = Axes3D(fig)
x = [0,1,1,0]
y = [0,0,1,1]
z = [0,1,0,1]
verts = [list(zip(x,y,z))]
ax.add_collection3d(Poly3DCollection(verts))
plt.show()
You might also be interested in art3d.pathpatch_2d_to_3d.
您可能还对 art3d.pathpatch_2d_to_3d 感兴趣。
回答by Alex Kritchevsky
The above solution is for Python 2, and gives an error 'TypeError: object of type 'zip' has no len()' when run with python 3.
上述解决方案适用于 Python 2，并在使用 python 3 运行时给出错误“TypeError: object of type 'zip' has no len()'。
See Plotting 3D Polygons in Python 3for discussion on updating this to Python 3.
有关将其更新为Python 3的讨论，请参阅在 Python 3 中绘制 3D 多边形。
Here's some working code from there:
这是那里的一些工作代码：
from mpl_toolkits.mplot3d import Axes3D
from mpl_toolkits.mplot3d.art3d import Poly3DCollection
import matplotlib.pyplot as plt
fig = plt.figure()
ax = Axes3D(fig)
x = [0, 1, 1, 0]
y = [0, 0, 1, 1]
z = [0, 1, 0, 1]
verts = [list(zip(x, y, z))]
print(verts)
ax.add_collection3d(Poly3DCollection(verts), zs='z')
plt.show()
