Change 3D background to black in matplotlib

问题

I'm having trouble changing the background of my 3d graph to black. This is my current code. When I do set facecolor to black, it changes the inside of the graph to be grey, which is not what I want.

fig = plt.figure()
fig.set_size_inches(10,10)
ax = plt.axes(projection='3d')
ax.grid(False)
ax.xaxis.pane.set_edgecolor('b')
ax.yaxis.pane.set_edgecolor('b')
ax.zaxis.pane.set_edgecolor('b')

# plt.gca().patch.set_facecolor('white')
# plt.axis('On')
fig.patch.set_facecolor('black')

ax.scatter(xs = Z['PC1'], ys = Z['PC2'], zs = Z['PC3'], c = Z['color'], s = 90, depthshade= False)
ax.set(title = 'test', xlabel = 'PC1', ylabel = 'PC2', zlabel = 'PC3')

回答1:

If you want to keep the wireframe axis you can do

ax.w_xaxis.pane.fill = False
ax.w_yaxis.pane.fill = False
ax.w_zaxis.pane.fill = False

Here's a complete example:

fig = plt.figure()
ax = plt.axes(projection='3d')
x, y, z = np.random.randint(10, size=(3, 250))

ax.scatter(x, y, z, c=np.random.randn(250))

fig.set_facecolor('black')
ax.set_facecolor('black') 
ax.grid(False) 
ax.w_xaxis.pane.fill = False
ax.w_yaxis.pane.fill = False
ax.w_zaxis.pane.fill = False

Or you can hide them altogether with

ax.w_xaxis.set_pane_color((0.0, 0.0, 0.0, 0.0))
ax.w_yaxis.set_pane_color((0.0, 0.0, 0.0, 0.0))
ax.w_zaxis.set_pane_color((0.0, 0.0, 0.0, 0.0))

Complete example:

fig = plt.figure()
ax = plt.axes(projection='3d')
x, y, z = np.random.randint(10, size=(3, 250))

ax.scatter(x, y, z, c=np.random.randn(250))

fig.set_facecolor('black')
ax.set_facecolor('black')
ax.grid(False)
ax.w_xaxis.set_pane_color((0.0, 0.0, 0.0, 0.0))
ax.w_yaxis.set_pane_color((0.0, 0.0, 0.0, 0.0))
ax.w_zaxis.set_pane_color((0.0, 0.0, 0.0, 0.0))

回答2:

Use Matplotlib's dark background style sheet, which uses white for elements that are typically black (text, borders, etc). It also works for 3D plots.

import numpy as np
import matplotlib.pyplot as plt


plt.style.use('dark_background')

fig, ax = plt.subplots()

L = 6
x = np.linspace(0, L)
ncolors = len(plt.rcParams['axes.prop_cycle'])
shift = np.linspace(0, L, ncolors, endpoint=False)
for s in shift:
    ax.plot(x, np.sin(x + s), 'o-')
ax.set_xlabel('x-axis')
ax.set_ylabel('y-axis')
ax.set_title("'dark_background' style sheet")

plt.show()

来源：https://stackoverflow.com/questions/51107968/change-3d-background-to-black-in-matplotlib