René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"hatch_demo.py does not correctly save all the hatches in pdf","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\n\r\n**Code for reproduction**\r\nThe same code available in \r\n\r\nhttps://matplotlib.org/2.0.2/examples/pylab_examples/hatch_demo.html\r\n\r\nwith just two addition: `matplotlib.use('Agg')` and `plt.savefig` in different formats.\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\n# Paste your code here\r\n\"\"\"\r\nHatching (pattern filled polygons) is supported currently in the PS,\r\nPDF, SVG and Agg backends only.\r\n\"\"\"\r\nimport matplotlib\r\nmatplotlib.use('Agg') #the same happen also without this line backend TkAgg\r\nimport matplotlib.pyplot as plt\r\nfrom matplotlib.patches import Ellipse, Polygon\r\n\r\nfig = plt.figure()\r\nax1 = fig.add_subplot(131)\r\nax1.bar(range(1, 5), range(1, 5), color='red', edgecolor='black', hatch=\"/\")\r\nax1.bar(range(1, 5), [6] * 4, bottom=range(1, 5), color='blue', edgecolor='black', hatch='//')\r\nax1.set_xticks([1.5, 2.5, 3.5, 4.5])\r\n\r\nax2 = fig.add_subplot(132)\r\nbars = ax2.bar(range(1, 5), range(1, 5), color='yellow', ecolor='black') + \\\r\n    ax2.bar(range(1, 5), [6] * 4, bottom=range(1, 5), color='green', ecolor='black')\r\nax2.set_xticks([1.5, 2.5, 3.5, 4.5])\r\n\r\npatterns = ('-', '+', 'x', '\\\\', '*', 'o', 'O', '.')\r\nfor bar, pattern in zip(bars, patterns):\r\n    bar.set_hatch(pattern)\r\n\r\nax3 = fig.add_subplot(133)\r\nax3.fill([1, 3, 3, 1], [1, 1, 2, 2], fill=False, hatch='\\\\')\r\nax3.add_patch(Ellipse((4, 1.5), 4, 0.5, fill=False, hatch='*'))\r\nax3.add_patch(Polygon([[0, 0], [4, 1.1], [6, 2.5], [2, 1.4]], closed=True, fill=False, hatch='/'))\r\nax3.set_xlim((0, 6))\r\nax3.set_ylim((0, 2.5))\r\n\r\n#plt.show()\r\n\r\nplt.savefig('hatch_demo.pdf')\r\nplt.savefig('hatch_demo.png')\r\nplt.savefig('hatch_demo.eps')\r\nprint(matplotlib.__version__)\r\nprint(matplotlib.get_backend())\r\n```\r\n\r\n**Actual outcome**\r\n\r\nThe pdf saved image does not show all the hatch.\r\n\u003c!--The output produced by the above code, which may be a screenshot, console output, etc.--\u003e\r\n[hatch_demo.pdf](https://github.com/matplotlib/matplotlib/files/2437141/hatch_demo.pdf)\r\n\r\nInstead, the png and the eps ones show all the hatch correctly.\r\n\r\n**Expected outcome**\r\n\r\nThe same shown in \r\n\r\nhttps://matplotlib.org/2.0.2/mpl_examples/pylab_examples/hatch_demo.pdf\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\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 18.04 x86_64\r\n  * Matplotlib version: v3.0.0 (but the same happen also whit v2.1.1) \r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): `Agg` (but the same happen also whit  `TkAgg`)\r\n  * Python version: Python 3.6.6\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\nMatplotlib installed with pip\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/ftesser","@type":"Person","name":"ftesser"},"datePublished":"2018-10-02T08:46:50.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":17},"url":"https://github.com/12367/matplotlib/issues/12367"}