Description
Bug summary
Calling plot_surface followed by fig.colorbar results in the following deprecation warning:
Auto-removal of grids by pcolor() and pcolormesh() is deprecated since 3.5
and will be removed two minor releases later; please call grid(False) first.
However, setting ax.grid(False) first does not help, the Warning is still shown.
Code for reproduction
Edit: As noted further down in the discussion: The warning does not appear for the default style. But if you load, e.g., plt.style.use('bmh'), you will see the warning.
# https://matplotlib.org/stable/gallery/mplot3d/surface3d.html
import matplotlib.pyplot as plt
from matplotlib import cm
from matplotlib.ticker import LinearLocator
import numpy as np
plt.style.use('bmh') # Edit: One of the styles with which you will see the warning
fig, ax = plt.subplots(subplot_kw={"projection": "3d"})
# Make data.
X = np.arange(-5, 5, 0.25)
Y = np.arange(-5, 5, 0.25)
X, Y = np.meshgrid(X, Y)
R = np.sqrt(X**2 + Y**2)
Z = np.sin(R)
# Plot the surface.
surf = ax.plot_surface(X, Y, Z, cmap=cm.coolwarm,
linewidth=0, antialiased=False)
# Customize the z axis.
ax.set_zlim(-1.01, 1.01)
ax.zaxis.set_major_locator(LinearLocator(10))
# A StrMethodFormatter is used automatically
ax.zaxis.set_major_formatter('{x:.02f}')
# Add a color bar which maps values to colors.
fig.colorbar(surf, shrink=0.5, aspect=5)
plt.show()Actual outcome
MatplotlibDeprecationWarning: Auto-removal of grids by pcolor() and pcolormesh() is deprecated
since 3.5 and will be removed two minor releases later; please call grid(False) first.
fig.colorbar(surf, shrink=0.5, aspect=5)
Expected outcome
No Warning or a warning with a fix that works.
Additional information
Works fine for matplotlib<3.5.
Operating system
Linux
Matplotlib Version
3.5.0
Matplotlib Backend
module://ipykernel.pylab.backend_inline
Python version
3.88
Jupyter version
6.4.0
Installation
conda