René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: Background of rotated png is rendered black","articleBody":"### Bug summary\n\nIf I rotate an image, the background of its bounding box is rendered black when rendering as .pdf or .png\n\n### Code for reproduction\n\n```Python\nimport matplotlib.pyplot as plt\nfrom matplotlib.transforms import Affine2D\nimport numpy as np\n\nimg = np.random.random((100, 20, 3))\n\ntr_rotate = Affine2D().rotate_deg_around(0 / 2, 0 / 2, 45)\ntr_translate = Affine2D().translate(250, 250)\n\nfig, ax = plt.subplots()\n\nax.imshow(\n    img,\n    transform=tr_rotate + ax.transData,\n    clip_on=False,\n)\n\nax.imshow(\n    img,\n    transform=tr_translate + ax.transData,\n    clip_on=False,\n)\n\nax.set_xlim(-250, 500)\nax.set_ylim(-250, 500)\n\nfig.savefig(\"MWE.png\")\n```\n\n\n### Actual outcome\n\n![Image](https://github.com/user-attachments/assets/0ebbc21c-22ca-4001-978b-9c483d5121c7)\n\n\n### Expected outcome\n\nTransparent Bounding Box\n\n### Additional information\n\nIn the past this was possible, however I don't know which version of matplotlib was used...\n\n### Operating system\n\nKDE Neon\n\n### Matplotlib Version\n\n3.9.2\n\n### Matplotlib Backend\n\ntkagg\n\n### Python version\n\n3.12.3\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\npip","author":{"url":"https://github.com/maederan201","@type":"Person","name":"maederan201"},"datePublished":"2024-12-13T06:41:27.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":15},"url":"https://github.com/29300/matplotlib/issues/29300"}