René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ax.bar doesn't work correctly when width is a timedelta64 object","articleBody":"The following example\r\n\r\n```python\r\nIn [1]: x = np.array(range(100), dtype='M8[D]')\r\n\r\nIn [2]: ax = plt.subplot(1,1,1)\r\n\r\nIn [3]: y = np.random.random(100)\r\n\r\nIn [4]: ax.bar(x, y)\r\nOut[4]: \u003cBarContainer object of 100 artists\u003e\r\n```\r\n\r\nworks fine, but if I set width to be the diff of the ``datetime64`` array, which gives a ``timedelta64`` array, things break:\r\n\r\n```python\r\nIn [7]: ax.bar(x[:-1], y[:-1], width=np.diff(x))\r\n---------------------------------------------------------------------------\r\nTypeError                                 Traceback (most recent call last)\r\n\u003cipython-input-7-f05692d600cb\u003e in \u003cmodule\u003e()\r\n----\u003e 1 ax.bar(x[:-1], y[:-1], width=np.diff(x))\r\n\r\n~/miniconda3/envs/dev/lib/python3.6/site-packages/matplotlib/__init__.py in inner(ax, *args, **kwargs)\r\n   1853                         \"the Matplotlib list!)\" % (label_namer, func.__name__),\r\n   1854                         RuntimeWarning, stacklevel=2)\r\n-\u003e 1855             return func(ax, *args, **kwargs)\r\n   1856 \r\n   1857         inner.__doc__ = _add_data_doc(inner.__doc__,\r\n\r\n~/miniconda3/envs/dev/lib/python3.6/site-packages/matplotlib/axes/_axes.py in bar(self, *args, **kwargs)\r\n   2257         if align == 'center':\r\n   2258             if orientation == 'vertical':\r\n-\u003e 2259                 left = x - width / 2\r\n   2260                 bottom = y\r\n   2261             elif orientation == 'horizontal':\r\n\r\nTypeError: ufunc subtract cannot use operands with types dtype('float64') and dtype('\u003cm8[D]')\r\n```\r\n\r\nThis should however be unambiguous, so it would be nice if it worked.","author":{"url":"https://github.com/astrofrog","@type":"Person","name":"astrofrog"},"datePublished":"2018-05-22T21:18:09.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/11290/matplotlib/issues/11290"}