René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: LayoutEngine rect not respected when saving figure with `rcParams['figure.constrained_layout.use'] = True`","articleBody":"### Bug summary\r\n\r\nI use the `rect` parameter of the figure's layout engine to set figure margins. For figures with `layout='constrained'` this parameter appears to be ignored if `rcParams['figure.constrained_layout.use']` is `True` when saving the figure. \r\n\r\n### Code for reproduction\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\nplt.rcParams['figure.constrained_layout.use']=True\r\nfig, ax = plt.subplots()\r\nengine = fig.get_layout_engine()\r\nengine.set(rect=[0.1,0.1,0.8,0.8]) # (left, bottom, width, height)\r\nengine.execute(fig)\r\nfig.savefig('test-constrained-True.png')\r\n```\r\n\r\n\r\n### Actual outcome\r\n\r\nThe saved figure does not have the expected layout. It does not match the figure displayed interactively. The axes extend to the edges of the figure area.\r\n![test-constrained-True](https://user-images.githubusercontent.com/4016348/200223680-cb1cba6b-ee61-4533-94f4-5b0f46441ca9.png)\r\n\r\n\r\n### Expected outcome\r\n\r\nThe saved figure has matches what is shown interactively. The axes do not extend to the edges of the figure area, respecting the `rect` parameter. This saved figure is generated with the code, which does not demonstrate the bug:\r\n```python\r\nplt.rcParams['figure.constrained_layout.use'] = False\r\nfig, ax = plt.subplots(layout='constrained')\r\nengine = fig.get_layout_engine()\r\nengine.set(rect=[0.1,0.1,0.8,0.8]) # (left, bottom, width, height)\r\nengine.execute(fig)\r\nfig.savefig('test-constrained-False.png')\r\n```\r\n![test-constrained-False](https://user-images.githubusercontent.com/4016348/200223804-509d7fec-37a0-41fb-aede-541852706cbf.png)\r\n\r\n\r\n### Additional information\r\n\r\n_No response_\r\n\r\n### Operating system\r\n\r\nWindows\r\n\r\n### Matplotlib Version\r\n\r\n3.6.1\r\n\r\n### Matplotlib Backend\r\n\r\nQt5Agg\r\n\r\n### Python version\r\n\r\n3.10.6\r\n\r\n### Jupyter version\r\n\r\nn/a\r\n\r\n### Installation\r\n\r\nconda","author":{"url":"https://github.com/s-bear","@type":"Person","name":"s-bear"},"datePublished":"2022-11-07T04:30:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/24389/matplotlib/issues/24389"}