Closed
Description
Bug summary
Adding a Line3DCollection to an animation results in Attribute error.
Code for reproduction
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib.collections import LineCollection
from mpl_toolkits.mplot3d.art3d import Line3DCollection
import numpy as np
import pkg_resources
import sys
lc = [(np.fromiter([0., 0., 0.], dtype="float"),
np.fromiter([1., 1., 1.], dtype="float"))]
pc = [np.fromiter([0., 0.], dtype="float"), np.fromiter(
[0., 1.], dtype="float"), np.fromiter([1., 1.], dtype="float")]
print(pkg_resources.get_distribution("matplotlib").version, file=sys.stderr)
fig = plt.figure()
ax = fig.add_subplot(projection="3d")
an = [[ax.add_collection(Line3DCollection(lc)),
ax.scatter(*pc),
ax.scatter(*pc),
],
[ax.scatter(*pc),
ax.scatter(*pc),
]
]
anim = animation.ArtistAnimation(fig, artists=an)
anim.save("mpl-test.webp", fps=100, writer="pillow")Actual outcome
Traceback (most recent call last):
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/animation.py", line 233, in saving
yield self
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/animation.py", line 1107, in save
writer.grab_frame(**savefig_kwargs)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/animation.py", line 495, in grab_frame
self.fig.savefig(
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/figure.py", line 3378, in savefig
self.canvas.print_figure(fname, **kwargs)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/backend_bases.py", line 2366, in print_figure
result = print_method(
^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/backend_bases.py", line 2232, in <lambda>
print_method = functools.wraps(meth)(lambda *args, **kwargs: meth(
^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py", line 445, in print_raw
FigureCanvasAgg.draw(self)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py", line 400, in draw
self.figure.draw(self.renderer)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/artist.py", line 95, in draw_wrapper
result = draw(artist, renderer, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/artist.py", line 72, in draw_wrapper
return draw(artist, renderer)
^^^^^^^^^^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/figure.py", line 3175, in draw
mimage._draw_list_compositing_images(
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/image.py", line 131, in _draw_list_compositing_images
a.draw(renderer)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/artist.py", line 72, in draw_wrapper
return draw(artist, renderer)
^^^^^^^^^^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/mpl_toolkits/mplot3d/axes3d.py", line 492, in draw
super().draw(renderer)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/artist.py", line 72, in draw_wrapper
return draw(artist, renderer)
^^^^^^^^^^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/axes/_base.py", line 3064, in draw
mimage._draw_list_compositing_images(
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/image.py", line 131, in _draw_list_compositing_images
a.draw(renderer)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/artist.py", line 39, in draw_wrapper
return draw(artist, renderer, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/mpl_toolkits/mplot3d/art3d.py", line 643, in draw
with self._use_zordered_offset():
File "/opt/homebrew/Cellar/python@3.11/3.11.4_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/contextlib.py", line 137, in __enter__
return next(self.gen)
^^^^^^^^^^^^^^
File "/opt/homebrew/lib/python3.11/site-packages/mpl_toolkits/mplot3d/art3d.py", line 758, in _use_zordered_offset
if self._offset_zordered is None:
^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Path3DCollection' object has no attribute '_offset_zordered'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/private/tmp/mpl-test.py", line 27, in <module>
anim.save("mpl-test.webp", fps=100, writer="pillow")
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/animation.py", line 1085, in save
with mpl.rc_context({'savefig.bbox': None}), \
File "/opt/homebrew/Cellar/python@3.11/3.11.4_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/contextlib.py", line 155, in __exit__
self.gen.throw(typ, value, traceback)
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/animation.py", line 235, in saving
self.finish()
File "/opt/homebrew/lib/python3.11/site-packages/matplotlib/animation.py", line 501, in finish
self._frames[0].save(
~~~~~~~~~~~~^^^
IndexError: list index out of range
Expected outcome
working animation
Additional information
Affected version: 3.7.2 (macos + homebrew + pip)
Unaffected: 3.6.3 (debian)
I am not sure if it is a backend or version issue. The problem also happens on mac with jupyter notebook and the notebook (inline and widget not tested) backend with my original (non-minimal) code.
Operating system
macos
Matplotlib Version
3.7.2
Matplotlib Backend
MacOSX
Python version
3.11.4
Jupyter version
7.0.2
Installation
pip