René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"OrderedDict legends no longer work 2.1","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### Bug report\r\n\r\nLegend handles and labels retrieval break as of `2.1.1`. Trying to call `ax.get_legend_handles_labels()` results in a comparison `ValueError` being thrown. `git bisect` led to https://github.com/matplotlib/matplotlib/commit/4f594f4d735ac1540d043b4843f9247111c5a6b6 being the start of the issue.\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\n%matplotlib inline\r\nimport collections\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np\r\n\r\nX = np.random.randn(10)\r\nY = np.random.randn(10)\r\nlabels = ['a'] * 5 + ['b'] * 5\r\ncolors = ['r'] * 5 + ['g'] * 5\r\n\r\nfig, ax = plt.subplots()\r\nfor x, y, label, color in zip(X, Y, labels, colors):\r\n    ax.scatter(x, y, label=label, c=color)\r\n\r\nhandles, labels = ax.get_legend_handles_labels()\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```python\r\n...in _in_handles(h, l)\r\n   1342                 pass\r\n   1343             try:\r\n-\u003e 1344                 if f_h.get_facecolor() != h.get_facecolor():\r\n   1345                     continue\r\n   1346             except AttributeError:\r\n\r\nValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()\r\n```\r\n\r\n**Expected outcome**\r\n\r\n\u003c!--A description of the expected outcome from the code snippet--\u003e\r\n\u003c!--If this used to work in an earlier version of Matplotlib, please note the version it used to work on--\u003e\r\nProduce a scatter plot, as expected. This worked in `2.1.0`.\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: Ubuntu 16.04 and macOS 10.13\r\n  * Matplotlib version: 2.1.1\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): agg on both\r\n  * Python version: 3.5.4\r\n  * Jupyter version (if applicable): 4.4.0\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\n","author":{"url":"https://github.com/jakereps","@type":"Person","name":"jakereps"},"datePublished":"2018-01-16T20:09:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/10262/matplotlib/issues/10262"}