René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"plt.hist chooses improper range when using string-based bin options","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### plt.hist range bug\r\n\r\nWhen using plt.hist with multiple input data sets, not supplying a range, and using a string-based binning option ('auto', for example), the range determined will cut off the later datasets and only fully include the first.\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 matplotlib.pyplot as plt\r\n\r\ndata = np.random.normal(0, 1, size=1000)\r\ndata2 = np.random.normal(3, 1, size=1000)\r\ndata3 = np.random.normal(6, 1, size=1000)\r\n\r\nplt.hist([data, data2, data3], bins='auto', histtype='stepfilled', stacked=False)\r\n\r\n```\r\n\r\n**Actual outcome**\r\n![bad_hist](https://cloud.githubusercontent.com/assets/5065341/26168360/6b32991e-3aff-11e7-95ea-bb6b95c98c82.png)\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\n**Expected outcome**\r\nThis is the plot using the bin-edges as determined by np.histogram using the following code:\r\n```python\r\n_, be = np.histogram([data, data2, data3], bins='auto')\r\nplt.hist([data, data2, data3], bins=be, histtype='stepfilled', stacked=False)\r\n```\r\n![good_hist](https://cloud.githubusercontent.com/assets/5065341/26168446/b42be1e8-3aff-11e7-9b72-5a78a051055a.png)\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: OSX 10.10.5\r\n  * Matplotlib Version: 2.0.1\r\n  * Python Version: 2.7.13\r\n  * Jupyter Version (if applicable): 4.0.6\r\n  * Other Libraries: \r\n\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\r\nPython installed via Homebrew, all python packages installed via pip.\r\n","author":{"url":"https://github.com/pollackscience","@type":"Person","name":"pollackscience"},"datePublished":"2017-05-17T17:56:27.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/8636/matplotlib/issues/8636"}