René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"For hist() with uneven bins, histtype=bar and stepfilled interpret align=left/right differently","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\n**Bug summary**\r\n\r\nI'm not really sure what align=left/right is even supposed to mean for uneven bins, but at least histype=bar/stepfilled should interpret them in the same manner (or both should error out).\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\nfrom pylab import *\r\n\r\nnp.random.seed(0)\r\nt = np.random.rand(100)\r\nfig, axs = plt.subplots(3, 2, sharex=True, sharey=True)\r\nfor i, align in enumerate([\"left\", \"mid\", \"right\"]):\r\n    for j, ht in enumerate([\"bar\", \"stepfilled\"]):\r\n        axs[i, j].hist(t, [0, 1/4, 1], histtype=ht, align=align)\r\n        axs[i, j].set(xlabel=f\"histtype={ht!r}\", ylabel=f\"align={align!r}\")\r\n        axs[i, j].label_outer()\r\n\r\nplt.show()\r\n```\r\n\r\n**Actual outcome**\r\n\r\n![test](https://user-images.githubusercontent.com/1322974/46838829-47ae8c00-cdbb-11e8-9663-080a10bcee3e.png)\r\n\r\n**Expected outcome**\r\n\r\nEither consistent plots with both histtypes, or an error indicating that align=left/right is incompatible with uneven bins.\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:\r\n  * Matplotlib version: master\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`):\r\n  * Python version:\r\n  * Jupyter version (if applicable):\r\n  * Other libraries: \r\n\r\nNoted while thinking about #12493.\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\n","author":{"url":"https://github.com/anntzer","@type":"Person","name":"anntzer"},"datePublished":"2018-10-11T23:10:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/12494/matplotlib/issues/12494"}