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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[MNT]: Add tests to codify `ax.clear`","articleBody":"### Summary\n\nAs discussed on today's call.\r\n\r\nWe need to codify what `ax.clear` and `plt.cla` are meant to actually clear on an axes, versus setting on the axes that should remain static.  \r\n\r\nFor instance, it is pretty straight forward that clearing an axes should remove any data artists from the plot.  However, what other properties should be reset.  Labels?  Tick styling, grids?  Units on axes?   Locators and formatters?  The scale of the axises?  \r\n\r\nIf anyone with edit access wants, they should start a list here, or if folks don't have edit access they can add list items on the comments.  \r\n\r\nCrossref: https://github.com/matplotlib/matplotlib/pull/23808\r\n\r\nMore reference from @timhoffm (https://github.com/matplotlib/matplotlib/pull/23808#pullrequestreview-1099932104):\r\n- #20149 is the original issue, that started everything\r\n- #20161 was the bugfix for above (v3.4.2)\r\n- resulting in regressions #20721 and #20219.\r\n- these were hot-fixed in #20826 (v3.4.3)\r\n- #22587 (v3.6.0) claims to be a follow-up cleanup which claims to not change the outcome, but apparently we did not have enough tests.\n\n### Proposed fix\n\n_No response_","author":{"url":"https://github.com/jklymak","@type":"Person","name":"jklymak"},"datePublished":"2022-09-09T00:03:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/23839/matplotlib/issues/23839"}