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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"matplotlib cutsom style sheet: format dates with new line character","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\n\u003c!--A short 1-2 sentences that succinctly describes the bug--\u003e\r\nIn my custom matplotlib style sheet, I want to format the dates in such a way that includes a new line character, i.e., `%b %d\\n%H:%M`. But matplotlib will not recognize the new line character and instead prints `\\n` as text on my figure.\r\n\r\nMore details here: https://stackoverflow.com/questions/59144140/matplotlib-cutsom-style-sheet-format-dates-with-new-line-character?noredirect=1#comment104516325_59144140\r\n\r\n**Code for reproduction**\r\n\r\n\u003c!--A minimum code snippet required to reproduce the bug.\r\nPlease make sure to minimize the number of dependencies required, and provide\r\nany necessary plotted data.\r\nAvoid using threads, as Matplotlib is (explicitly) not thread-safe.--\u003e\r\n\r\n\r\nIn my `my_style.mplstyle` file, I have this formatting instruction for the dates (note the new line character):\r\n\r\n```python\r\n    date.autoformatter.hour    : %b %d\\n%H:%M\r\n```\r\n\r\nWhen I load the style sheet and make a plot with dates on the x axis, it displays the \\n as text rather than recognizing it as a new line character.\r\n\r\n```python\r\n    import matplotlib.pyplot as plt\r\n    plt.style.use('my_style')\r\n    import pandas as pd\r\n    from datetime import datetime\r\n    DATES = pd.date_range(datetime(2019, 1, 1), datetime(2019, 1, 2), 6)\r\n    plt.plot(DATES, range(len(DATES)))\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![image](https://user-images.githubusercontent.com/6249613/69989378-5775bc00-14f8-11ea-8140-2da354c390a4.png)\r\n\r\n```\r\n# If applicable, paste the console output here\r\n#\r\n#\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\n    \r\nI can get the desired outcome if I use the manual method to change the date formats directly in my code, but I would rather avoid repeating these lines of code in all my plotting scripts. That is why I want to use the style sheet to do this.\r\n\r\n```python\r\n    import matplotlib.dates as mdates\r\n    myFmt = mdates.DateFormatter('%b %d\\n%H:%M')\r\n    plt.plot(DATES, range(len(DATES)))\r\n    plt.gca().xaxis.set_major_formatter(myFmt)\r\n```\r\n\r\n![image](https://user-images.githubusercontent.com/6249613/69989465-7f651f80-14f8-11ea-8c09-c4af591745ec.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: Windows\r\n  * Matplotlib version: 3.1.2\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): module://ipykernel.pylab.backend_inline\r\n  * Python version: 3.7.4\r\n  * Jupyter version (if applicable): \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\nInstalled from conda\r\n","author":{"url":"https://github.com/blaylockbk","@type":"Person","name":"blaylockbk"},"datePublished":"2019-12-02T19:43:03.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/15813/matplotlib/issues/15813"}