python绘制三维图像球,的Python / matplotlib：绘制一个三维立方体，球体和一个载体？...

I search how to plot something with less instruction as possible with matplotlib but I don't find any help for this in the documentation.

I want to plot the following things :

- a wireframe cube centered in 0 with a side length of 2

- a "wireframe" sphere centered in 0 with a radius of 1

- a point at coordinates [0, 0, 0]

- a vector that starts at this point and goes to [1, 1, 1]

How to do that ?

Thank you very very much !

解决方案

It is a little complicated, but you can draw all the objects by the following code:

# -*- coding: utf-8 -*-

from mpl_toolkits.mplot3d import Axes3D

import matplotlib.pyplot as plt

import numpy as np

from itertools import product, combinations

fig = plt.figure()

ax = fig.gca(projection='3d')

ax.set_aspect("equal")

#draw cube

r = [-1, 1]

for s, e in combinations(np.array(list(product(r,r,r))), 2):

if np.sum(np.abs(s-e)) == r[1]-r[0]:

ax.plot3D(*zip(s,e), color="b")

#draw sphere

u, v = np.mgrid[0:2*np.pi:20j, 0:np.pi:10j]

x=np.cos(u)*np.sin(v)

y=np.sin(u)*np.sin(v)

z=np.cos(v)

ax.plot_wireframe(x, y, z, color="r")

#draw a point

ax.scatter([0],[0],[0],color="g",s=100)

#draw a vector

from matplotlib.patches import FancyArrowPatch

from mpl_toolkits.mplot3d import proj3d

class Arrow3D(FancyArrowPatch):

def __init__(self, xs, ys, zs, *args, **kwargs):

FancyArrowPatch.__init__(self, (0,0), (0,0), *args, **kwargs)

self._verts3d = xs, ys, zs

def draw(self, renderer):

xs3d, ys3d, zs3d = self._verts3d

xs, ys, zs = proj3d.proj_transform(xs3d, ys3d, zs3d, renderer.M)

self.set_positions((xs[0],ys[0]),(xs[1],ys[1]))

FancyArrowPatch.draw(self, renderer)

a = Arrow3D([0,1],[0,1],[0,1], mutation_scale=20, lw=1, arrowstyle="-|>", color="k")

ax.add_artist(a)

plt.show()