René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"boxplot: positions used to take Int64Index","articleBody":"\u003c!--To help us understand and resolve your issue, please fill out the form to the best of your ability.--\u003e\r\n\u003c!--You can feel free to delete the sections that do not apply.--\u003e\r\n\r\n### Bug report\r\n\r\nI upgraded matplotlib recently and my `boxplot` stopped working. I realized it was the keyword positions which was taking in a `Int64Index` array created by pandas. Using `Int64Index.values` fixes this, but `plot` takes a `Int64Index` array so can't see why it isn't desirable for `boxplot` or why it was removed/no longer works.\r\n\r\n\u003c!--A short 1-2 sentences that succinctly describes the bug--\u003e\r\n\r\n**Code for reproduction**\r\n\r\n\u003c!--A minimum code snippet required to reproduce the bug, also minimizing the number of dependencies required--\u003e\r\n\r\n```python\r\nimport numpy as np\r\nimport pandas as pd\r\nimport matplotlib.pyplot as plt\r\ndata = np.random.rand(5,2)\r\nyears = pd.date_range('1/1/2000',\r\n                      periods=2, freq=pd.DateOffset(years=1)).year                      \r\n# Does not work\r\nplt.figure()\r\nplt.boxplot(data, positions=years)\r\n# Works\r\nplt.figure()\r\nplt.boxplot(data, positions=years.values)\r\n# Works\r\nplt.figure()\r\nplt.plot(years, data[0,:]) \r\n```\r\n\r\n**Actual outcome**\r\n\r\n\u003c!--The output produced by the above code, which may be a screenshot, console output, etc.--\u003e\r\n\r\n```\r\nTraceback (most recent call last):\r\n\r\n  File \"\u003cipython-input-38-2540b7c8b9eb\u003e\", line 6, in \u003cmodule\u003e\r\n    plt.boxplot(data, positions=years)\r\n\r\n  File \"/Users/Ray/anaconda/lib/python3.6/site-packages/matplotlib/pyplot.py\", line 2729, in boxplot\r\n    zorder=zorder, data=data)\r\n\r\n  File \"/Users/Ray/anaconda/lib/python3.6/site-packages/matplotlib/__init__.py\", line 1717, in inner\r\n    return func(ax, *args, **kwargs)\r\n\r\n  File \"/Users/Ray/anaconda/lib/python3.6/site-packages/matplotlib/axes/_axes.py\", line 3378, in boxplot\r\n    manage_xticks=manage_xticks, zorder=zorder)\r\n\r\n  File \"/Users/Ray/anaconda/lib/python3.6/site-packages/matplotlib/axes/_axes.py\", line 3698, in bxp\r\n    cap_x = np.array([cap_left, cap_right])\r\n\r\nValueError: setting an array element with a sequence.\r\n```\r\n\r\n**Expected outcome**\r\n\r\nExpect to produce boxplot and label the xaxis '2000, 2001'\r\nUnfortunately I cannot remember which version I previously used...\r\n\r\n\r\n**Matplotlib version**\r\n\u003c!--Please specify your platform and versions of the relevant libraries you are using:--\u003e\r\n  * Operating system: macOS\r\n  * Matplotlib version: 2.1.1\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): module://ipykernel.pylab.backend_inline\r\n  * Python version: Python 3.6.3 :: Anaconda custom (x86_64)\r\n  * Pandas version: 0.21.1 \r\n\r\n**Installation**\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n`conda upgrade matplotlib`\r\n\r\np.s. don't have much dev experience but happy to have a crack at this if it is desired.\r\n\r\n","author":{"url":"https://github.com/raybellwaves","@type":"Person","name":"raybellwaves"},"datePublished":"2017-12-16T04:49:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/10022/matplotlib/issues/10022"}