René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[MNT]: 3D z axis margin is handled differently than x and z","articleBody":"### Summary\n\nThe z-axis default margin is 0 for perspective projection, while x/y use 0.05. `zz_dataLim` and `_zmargin` are calibrated to produce the same empty-plot limits as x/y, but they diverge when data is present - x and y get margin but z does not. `scatter` has a special code path to bump `_zmargin` to 0.05, but this is missing from the other plotting methods. We should have everything on a common code path here with margins for all axes, but this will require regenerating a large number of baseline images.\n\nWaiting on https://github.com/matplotlib/matplotlib/pull/30980, to ensure consistency across different scales. That PR also adds a test for equal blank-plot axis limits.\n\n### Proposed fix\n\n_No response_","author":{"url":"https://github.com/scottshambaugh","@type":"Person","name":"scottshambaugh"},"datePublished":"2026-02-27T23:20:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/31213/matplotlib/issues/31213"}