René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"sticky_edges behavior is not consistent within/across subpots","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nI am trying to draw lines that do not get a margin placed around them when the axis is autoscaled. My understanding is that the current way to accomplish that is with [`Artist.sticky_edges`](https://matplotlib.org/3.1.1/api/_as_gen/matplotlib.artist.Artist.sticky_edges.html#matplotlib.artist.Artist.sticky_edges). But I am finding that while this works within a single Axes, it does not work across multiple Axes \r\n\r\n**Code for reproduction**\r\n\r\nThis works:\r\n\r\n```python\r\nf, ax = plt.subplots()\r\n\r\nax.scatter([0, 1], [0, 0])\r\nx1 = ax.get_xlim()\r\nline, = ax.plot(x1, [0, 0])\r\nline.sticky_edges.x[:] = x1\r\n\r\nax.scatter([0, 1], [1, 1])\r\nx2 = ax.get_xlim()\r\nline, = ax.plot(x2, [1, 1])\r\nline.sticky_edges.x[:] = x2\r\n\r\nassert x1 == x2\r\n```\r\n\r\nWhile this fails:\r\n\r\n```python\r\nf, (ax1, ax2) = plt.subplots(1, 2, sharex=True, sharey=True)\r\n\r\nax1.scatter([0, 1], [0, 0])\r\nx1 = ax1.get_xlim()\r\nline, = ax1.plot(x1, [0, 0])\r\nline.sticky_edges.x[:] = x1\r\n\r\nax2.scatter([0, 1], [1, 1])\r\nx2 = ax2.get_xlim()\r\nline, = ax2.plot(x2, [1, 1])\r\nline.sticky_edges.x[:] = x2\r\n\r\nassert x1 == x2\r\n```\r\n\r\nIs this expected to work? I know there are active changes to the autoscaling behavior; is this a bug that has been fixed (I'm not in a position to test things on a development build right now). Is there a different way to accomplish \"ignore an artist when autoscaling\"?\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: macos\r\n  * Matplotlib version: 3.1.1\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): inline\r\n  * Python version: 3.7\r\n\r\n","author":{"url":"https://github.com/mwaskom","@type":"Person","name":"mwaskom"},"datePublished":"2019-12-17T20:23:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/15967/matplotlib/issues/15967"}