René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: ContourLabeler.clabel with manual != False breaks unconnected contours","articleBody":"### Bug summary\r\n\r\nWhen adding contour label positions manually (either via clicking or specifying an iterable of positions), contours with disconnected parts are not handled correctly, but sometimes rejoined seemingly arbitrarily.\r\n\r\n### Code for reproduction\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np\r\nfig, ax = plt.subplots()\r\nx, y = np.mgrid[-1:1:21j, -1:1:21j]\r\n\r\ncs = ax.contour(x, y, 1/np.sqrt(0.01+(x+0.3)**2+y**2) + 1/np.sqrt(0.01+(x-0.3)**2+y**2), levels=[7])\r\ncs.clabel(manual=[(0.2, 0.1)])\r\n```\r\n\r\n\r\n### Actual outcome\r\n\r\n![image](https://github.com/matplotlib/matplotlib/assets/100362316/2a3136bc-17f6-483a-a6a3-e8a3a1ad8877)\r\n\r\n\r\n### Expected outcome\r\n\r\nAs it looked in matplotlib 3.7.3:\r\n![image](https://github.com/matplotlib/matplotlib/assets/100362316/7a1ab0a4-5799-4468-a4e4-3e9b19b79766)\r\n\r\n\r\n### Additional information\r\n\r\n_No response_\r\n\r\n### Operating system\r\n\r\n_No response_\r\n\r\n### Matplotlib Version\r\n\r\n3.8.0\r\n\r\n### Matplotlib Backend\r\n\r\n_No response_\r\n\r\n### Python version\r\n\r\n_No response_\r\n\r\n### Jupyter version\r\n\r\n_No response_\r\n\r\n### Installation\r\n\r\nconda","author":{"url":"https://github.com/rho-novatron","@type":"Person","name":"rho-novatron"},"datePublished":"2023-10-11T16:37:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/27062/matplotlib/issues/27062"}