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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug] set_3d_properties type error in Matplotlib 3.5.1","articleBody":"### Bug summary\r\nI had a code that uses `animation.FuncAnimation` to generate an animation, where I update a `mpl_toolkits.mplot3d.art3d.Line3D` object using `set_data(a, b)` and `set_3d_properties(c)` where `a`, `b`, and `c` are of type `numpy.float64`. This code works perfectly in Matplotlib 3.4.3. However, after I upgraded to Matplotlib 3.5.1, it fails with the following error\r\n```bash\r\n  File \"/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/mpl_toolkits/mplot3d/art3d.py\", line 175, in set_3d_properties\r\n    zs = np.broadcast_to(zs, len(xs))\r\nTypeError: object of type 'numpy.float64' has no len()\r\n```\r\n\r\n### Source\r\nI checked the source code of `mpl_toolkits/mplot3d/art3d.py` and found that in Matplotlib 3.4.3, line 175 (the line where the error occurred) was `zs = np.broadcast_to(zs, xs.shape)` instead, and this avoids the error. I was able to make my code run again in Matplotlib 3.5.1 by changing my code to `set_data([a], [b])` and `set_3d_properties([c])`, but as expected, this would not run in 3.4.3. I am using Python 3.10.\r\n\r\nWas this change in line 175 of `mpl_toolkits/mplot3d/art3d.py` intended?\r\n","author":{"url":"https://github.com/jiashuhan","@type":"Person","name":"jiashuhan"},"datePublished":"2022-01-24T23:30:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":21},"url":"https://github.com/22308/matplotlib/issues/22308"}