Dear all,

I've got two questions concerning axis in 3d plots.

When I do something similar to my minimal working example (see below), then I see a grid and light gray filling forming half a cube.

1. How do I turn off this cube in z-direction, so that the x-y-plane still has got the ticks and labels, but there is no x-z-plane, nor a y-z-plane.

In the first attached image there is how far I got and the other image is what I intend to have.

In the left plot, there I turned off the axis (`ax2.axis('off')`, but this also turns off the x-y-plane and in the right plot there is the box.

2. The best case would be that I get the right plot with a shifted dedicated z-axis, but I haven't looked into creating such new axis, yet.

Unfortunately, I couldn't find an option like `ax2.axis(x=True,y=True,z=False)` or `plt.grid('no-z')` and the 3d examples from the gallery also include all this box, even the frontpage example[1] which has no ticks.

Also emptying the ticks and labels in z still leaves the gray box (trick 1 in MWE). And trying to hide them behind a white surface (trick 2 in MWE) still leaves a small grey border.

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Minimal Working Example

# MWE

import matplotlib.pyplot as plt

from matplotlib import cm

from mpl_toolkits.mplot3d import Axes3D

import numpy as np

# sample data

x = np.linspace(-2, 2, 10)

y = np.linspace(-2, 2, 10)

X, Y = np.meshgrid(x, y)

def fun(x, y):

return x + y

Z = fun(X, Y)

# plotting problem

fig = plt.figure()

ax1 = fig.add_subplot(1, 1, 1, projection='3d', frame_on=False, )

surf1 = ax1.plot_surface(X, Y, Z, linewidth=0, antialiased=True, cmap=cm.RdYlBu)

# trick 1

ax1.set_zticks()

ax1.set_zticklabels()

ax1.grid(False)

# trick 2

ax1.contourf(X, Y,

np.array([np.ones_like(Z)[-1, :] * i for i in np.linspace(-4, 4, 10)]).T,

zdir='x', offset=-2, colors="white")

ax1.set_xlim(-2,2)

ax1.set_ylim(-2,2)

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[1] Frontpage 3D example — Matplotlib 3.3.4 documentation

I hope, I could make my intention and attempts clear, hope a solution exists and someone here knows of it and can tell me how to proceed.

Thank you very much in advance,

Julian