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[Bug]: surface_plot cannot generate image even the axis #24725
Description
Bug summary
When I used surface_plot function with matplotlib version 3.6.2 on MacOS to draw a 3D image, nothing appears even the axis.
When I tried to degrade matplotlib to 3.5 and run the same code, it works.
Code for reproduction
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
from scipy.stats import multivariate_normal
def Gaussian_Distribution(N=2, M=1000, m=0, sigma=1):
mean = np.zeros(N) + m
cov = np.eye(N) * sigma
data = np.random.multivariate_normal(mean, cov, M)
Gaussian = multivariate_normal(mean=mean, cov=cov)
return data, Gaussian
M = 100
data, Gaussian = Gaussian_Distribution(N=2, M=M, sigma=0.1)
X, Y = np.meshgrid(np.linspace(-1,1,M), np.linspace(-1,1,M))
d = np.dstack([X,Y])
Z = Gaussian.pdf(d).reshape(M,M)
fig = plt.figure(figsize=(6,4))
ax = Axes3D(fig)
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap='seismic', alpha=0.8)
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
plt.savefig('123.png')
plt.show()Actual outcome
Expected outcome
Additional information
No response
Operating system
No response
Matplotlib Version
3.6.2
Matplotlib Backend
No response
Python version
No response
Jupyter version
No response
Installation
None
Activity
greglucas commented on Dec 14, 2022
That is not a recommended way to add a 3D axes to a figure since version 1.0.
https://matplotlib.org/stable/tutorials/toolkits/mplot3d.html#sphx-glr-tutorials-toolkits-mplot3d-py
Change ax = Axes3D(fig) to ax = fig.add_subplot(projection='3d')
rcomer commented on Dec 14, 2022
Since #24715 is documenting that Axes should not be instantiate directly, I guess that closes this.