René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: constrained layout clips y-label above y-axis","articleBody":"### Bug summary\r\n\r\nWhen placing the y-label above the y-axis/spine, it gets clipped with constrained layout. It works OK with tight layout and on the left in constrained layout.\r\n\r\n### Code for reproduction\r\n\r\n```Python\r\nimport matplotlib.pyplot as plt\r\nx = range(10)\r\nlab = \"foo bar baz\"\r\n\r\n# with extra space it works, but the second plot with two lines gets\r\n# clipped.\r\nfig0, axes0 = plt.subplots(1, 2, constrained_layout=True)\r\n[ax.plot(x, x) for ax in axes0]\r\n[ax.set_ylabel(\"\\n\".join([lab]*(i+1)),\r\n               y=1.0,\r\n               rotation=\"horizontal\",\r\n               horizontalalignment=\"left\",\r\n               multialignment=\"left\",)\r\n for i, ax in enumerate(axes0)]\r\n\r\n# single plot with one line also gets clipped\r\nfig1, ax1 = plt.subplots(constrained_layout=True)\r\nax1.plot(x, x)\r\nax1.set_ylabel(lab,\r\n               y=1.0,\r\n               rotation=\"horizontal\",\r\n               horizontalalignment=\"left\",\r\n               multialignment=\"left\",)\r\n\r\n# For reference it works fine when placing the ylab on the 'side'\r\n# as a conventional matplotlib plot\r\nfig2, ax2 = plt.subplots(constrained_layout=True)\r\nax2.plot(x, x)\r\nax2.set_ylabel(f\"{lab}\\n{lab}\",\r\n               rotation=\"horizontal\",\r\n               horizontalalignment=\"right\",\r\n               multialignment=\"right\",)\r\n\r\nfor i, fig in enumerate((fig0, fig1, fig2)):\r\n    fig.savefig(f\"fig{i}.png\")\r\n```\r\n\r\n### Actual outcome\r\n\r\nThe y-label gets clipped. The second plot should have a two line long y label. \r\n![fig0](https://github.com/matplotlib/matplotlib/assets/666845/d3d58412-9646-40d8-90a7-048bc5903fd9)\r\n\r\nIt also happens with a y-label that is just one line:\r\n![fig1](https://github.com/matplotlib/matplotlib/assets/666845/056c95b3-7159-49c9-bc14-db80cd485e99)\r\n\r\n\r\n### Expected outcome\r\n\r\nI would expect the y label to be included, even when putting it above the axis. Example with tight layout (`fig1.tight_layout()`)\r\n\r\n![fig1_tight](https://github.com/matplotlib/matplotlib/assets/666845/e60bfa47-eb5f-4515-be7c-107769562de2)\r\n\r\n\r\n### Additional information\r\n\r\nI *think* this is a bug(?).  \r\nI have tried various vertical alignments, and it doesn't make much of a difference. I also tried to follow the legend `set_in_layout`-example in the [constrained layout guide](https://matplotlib.org/stable/users/explain/axes/constrainedlayout_guide.html#legends) without much luck.\r\n\r\nA temporary fix is to set the title to `' '` or increasing the constrained layout padding, I guess. \r\n\r\nNote that constrained layout works as expected with long y-labels on the left:\r\n\r\n![fig2](https://github.com/matplotlib/matplotlib/assets/666845/15f435ad-0150-41c3-8a55-6c2ec2346e3d)\r\n\r\n\r\n### Operating system\r\n\r\nWindows\r\n\r\n### Matplotlib Version\r\n\r\n3.8.0\r\n\r\n### Matplotlib Backend\r\n\r\nmodule://matplotlib_inline.backend_inline, but present in saved figures (`savefig`) \r\n\r\n### Python version\r\n\r\n3.12.1\r\n\r\n### Jupyter version\r\n\r\nJupyter console 6.6.3\r\n\r\n### Installation\r\n\r\nconda","author":{"url":"https://github.com/pank","@type":"Person","name":"pank"},"datePublished":"2024-03-07T13:36:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/27877/matplotlib/issues/27877"}