René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: Duplicating the labels in the `height`/`width` argument in `barh()`/`bar` leads to undrawn bars","articleBody":"### Bug summary\n\nWhen there are duplicate labels in my label array (for example: `['first label', 'second label’, ‘third label', 'second label']`), `ax.bar()` and `ax.barh()` ignore the duplicates (both bars and labels).\n\n### Code for reproduction\n\n```Python\nimport matplotlib.pyplot as plt\n\nname = [\n    \"first label\",\n    \"second label\",\n    \"third label\",\n    \"second label\",\n]\nvalue = [1, 2, 3, 4]\n\nfig, ax = plt.subplots(layout=\"tight\")\nax.barh(name, value)\n\nfor i in range(len(name)):\n    n = name[i]\n    v = value[i]\n    ax.text(x=v + 1, y=i, s=f\"{n} ({i})\", va=\"center\")\n```\n\n### Actual outcome\n\n![Image](https://github.com/user-attachments/assets/c8831178-25fb-41ba-975f-604bd7a88f7a)\n\n### Expected outcome\n\nA bar chart with 4 bars (the second ‘second label’ would be above the bar of the ‘third label’).\n\nWhat's more, for some reason the bar on the ‘second label’ has a value of 4, whereas I was intuitively expecting it to have a value of 2?\n\n### Additional information\n\nYou might expect there to be only single labels, but as this isn't explained in the documentation, I've pointed it out just in case. It's quite hard to spot when you're drawing a lot of bars.\n\n### Operating system\n\nMacOS Sonoma\n\n### Matplotlib Version\n\n3.10.0\n\n### Matplotlib Backend\n\nmodule://positron_ipykernel.matplotlib_backend\n\n### Python version\n\n3.13.1\n\n### Jupyter version\n\n/\n\n### Installation\n\npip","author":{"url":"https://github.com/JosephBARBIERDARNAL","@type":"Person","name":"JosephBARBIERDARNAL"},"datePublished":"2025-01-23T16:28:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/29507/matplotlib/issues/29507"}