René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Color bar has multiple labels for 0 if matplotlib.colors.SymLogNorm is used","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nThe color bar has multiple labels with the value 0 if `matplotlib.colors.SymLogNorm` is used leading to a \"bold-looking\" label.\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\nfrom matplotlib import pyplot as plt\r\nimport matplotlib as mpl\r\n\r\nfig, axes = plt.subplots(1, 2, True, True)\r\n\r\nfor i, ax in enumerate(axes): \r\n    im = ax.imshow([[0]], norm=mpl.colors.SymLogNorm(1e-5, vmin=-1, vmax=1))\r\n    cb = plt.colorbar(im, ax=ax)\r\n\r\n# Clean up the labels\r\nzero_labelled = False\r\nfor label in cb.ax.yaxis.get_ticklabels():\r\n    if label.get_text() == r'$\\mathdefault{0}$':\r\n        if zero_labelled:\r\n            label.set_visible(False)\r\n        zero_labelled = True\r\n```\r\n\r\n**Actual outcome on the left, expected outcome on the right**\r\n\r\n![image](https://user-images.githubusercontent.com/966348/34409719-df9d3246-ebcb-11e7-9e61-58ac9cf63f58.png)\r\n\r\n**Matplotlib version**\r\n\r\n  * Operating system: Linux 1061836d2c20 4.9.49-moby #1 SMP Fri Dec 8 13:40:02 UTC 2017 x86_64 GNU/Linux\r\n  * Matplotlib version: 2.1.1\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): module://ipykernel.pylab.backend_inline\r\n  * Python version: 3.6.3\r\n  * Jupyter version (if applicable): 4.4.0\r\n  * Other libraries: numpy (1.13.3)\r\n\r\nAll libraries were installed using pip in a docker image derived from `python:3`.\r\n","author":{"url":"https://github.com/tillahoffmann","@type":"Person","name":"tillahoffmann"},"datePublished":"2017-12-28T11:38:07.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/10122/matplotlib/issues/10122"}