René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Removal of x-shared polar axes causes crash","articleBody":"\u003c!--To help us understand and resolve your issue, please fill out the form to the best of your ability.--\u003e\r\n\u003c!--You can feel free to delete the sections that do not apply.--\u003e\r\n\r\n### Bug report\r\n\r\n**Bug summary**\r\n\r\nAll's in the title.\r\n\r\n(Note that x-sharing (which really means theta-sharing) polar axes makes sense because one can use set_thetalims to draw just a wedge.)\r\n\r\n**Code for reproduction**\r\n\r\n\u003c!--A minimum code snippet required to reproduce the bug.\r\nPlease make sure to minimize the number of dependencies required, and provide\r\nany necessary plotted data.\r\nAvoid using threads, as Matplotlib is (explicitly) not thread-safe.--\u003e\r\n\r\n```python\r\nfrom pylab import *\r\nax1, ax2 = gcf().subplots(2, sharex=True, subplot_kw={\"projection\": \"polar\"}); ax2.remove()\r\n```\r\n\r\n**Actual outcome**\r\n\r\n\u003c!--The output produced by the above code, which may be a screenshot, console output, etc.--\u003e\r\n\r\n```\r\nTraceback (most recent call last):\r\n  File \"\u003cstring\u003e\", line 4, in \u003cmodule\u003e\r\n  File \".../path/to/matplotlib/artist.py\", line 162, in remove\r\n    self._remove_method(self)\r\n  File \".../path/to/matplotlib/figure.py\", line 967, in delaxes\r\n    _reset_locators_and_formatters(last_ax.xaxis)\r\n  File \".../path/to/matplotlib/figure.py\", line 930, in _reset_locators_and_formatters\r\n    isDefault = majloc.axis.isDefault_majloc\r\nAttributeError: '_AxisWrapper' object has no attribute 'isDefault_majloc'\r\n```\r\n\r\n**Expected outcome**\r\n\r\nNormal axes removal.\r\n\r\n**Matplotlib version**\r\n\u003c!--Please specify your platform and versions of the relevant libraries you are using:--\u003e\r\n  * Operating system: linux\r\n  * Matplotlib version (`import matplotlib; print(matplotlib.__version__)`): head\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): mplcairo\r\n  * Python version: 39\r\n  * Jupyter version (if applicable): \r\n  * Other libraries: \r\n\r\n#13482 happens to fix this, because it moves handling of isDefault_\\* to the tickers themselves (where they logically belong), rather than having them on the axis.\r\n\r\n(Note that this is a separate issue from https://github.com/matplotlib/matplotlib/issues/19989 as the root cause seems very different.)","author":{"url":"https://github.com/anntzer","@type":"Person","name":"anntzer"},"datePublished":"2021-04-16T16:46:04.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/19988/matplotlib/issues/19988"}