René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: plt.errorbar error for all-nan xerr and yerr","articleBody":"### Bug summary\r\n\r\n`plt.errorbar` don't give result when only nan data in the xerr or yerr. This is similar to issue #24127.\r\n\r\n### Code for reproduction\r\n\r\n```python\r\nimport numpy as np\r\nimport matplotlib.pyplot as plt\r\nplt.errorbar(x=[0], y=[0], xerr =[np.nan], yerr=[np.nan])\r\nplt.show()\r\n```\r\n\r\n\r\n### Actual outcome\r\n\r\n\u003e ---------------------------------------------------------------------------\r\nStopIteration                             Traceback (most recent call last)\r\n[\u003cipython-input-12-e7cb66e16887\u003e](https://localhost:8080/#) in \u003cmodule\u003e\r\n      1 import numpy as np\r\n      2 import matplotlib.pyplot as plt\r\n----\u003e 3 plt.errorbar(x=[0], y=[0], xerr =[np.nan], yerr=[np.nan])\r\n      4 plt.show()\r\n\r\n4 frames\r\n[/usr/local/lib/python3.9/dist-packages/matplotlib/pyplot.py](https://localhost:8080/#) in errorbar(x, y, yerr, xerr, fmt, ecolor, elinewidth, capsize, barsabove, lolims, uplims, xlolims, xuplims, errorevery, capthick, data, **kwargs)\r\n   2562         uplims=False, xlolims=False, xuplims=False, errorevery=1,\r\n   2563         capthick=None, *, data=None, **kwargs):\r\n-\u003e 2564     return gca().errorbar(\r\n   2565         x, y, yerr=yerr, xerr=xerr, fmt=fmt, ecolor=ecolor,\r\n   2566         elinewidth=elinewidth, capsize=capsize, barsabove=barsabove,\r\n\r\n[/usr/local/lib/python3.9/dist-packages/matplotlib/__init__.py](https://localhost:8080/#) in inner(ax, data, *args, **kwargs)\r\n   1440     def inner(ax, *args, data=None, **kwargs):\r\n   1441         if data is None:\r\n-\u003e 1442             return func(ax, *map(sanitize_sequence, args), **kwargs)\r\n   1443 \r\n   1444         bound = new_sig.bind(ax, *args, **kwargs)\r\n\r\n[/usr/local/lib/python3.9/dist-packages/matplotlib/axes/_axes.py](https://localhost:8080/#) in errorbar(self, x, y, yerr, xerr, fmt, ecolor, elinewidth, capsize, barsabove, lolims, uplims, xlolims, xuplims, errorevery, capthick, **kwargs)\r\n   3530 \r\n   3531         if xerr is not None and not isinstance(xerr, np.ndarray):\r\n-\u003e 3532             xerr = _upcast_err(xerr)\r\n   3533         if yerr is not None and not isinstance(yerr, np.ndarray):\r\n   3534             yerr = _upcast_err(yerr)\r\n\r\n[/usr/local/lib/python3.9/dist-packages/matplotlib/axes/_axes.py](https://localhost:8080/#) in _upcast_err(err)\r\n   3514                     # location first on pandas objects so err[0] almost always\r\n   3515                     # fails.\r\n-\u003e 3516                     isinstance(cbook._safe_first_finite(err), np.ndarray)\r\n   3517             ):\r\n   3518                 # Get the type of the first element\r\n\r\n[/usr/local/lib/python3.9/dist-packages/matplotlib/cbook/__init__.py](https://localhost:8080/#) in _safe_first_finite(obj, skip_nonfinite)\r\n   1713                            \"support generators as input\")\r\n   1714     else:\r\n-\u003e 1715         return next(val for val in obj if safe_isfinite(val))\r\n   1716 \r\n   1717 \r\n\r\nStopIteration:\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n### Expected outcome\r\n\r\nPlot nothing\r\n\r\n### Additional information\r\n\r\n_No response_\r\n\r\n### Operating system\r\n\r\ncolab\r\n\r\n### Matplotlib Version\r\n\r\n3.7.1\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\nNone","author":{"url":"https://github.com/Nanta-Sp","@type":"Person","name":"Nanta-Sp"},"datePublished":"2023-03-25T22:30:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/25549/matplotlib/issues/25549"}