René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"BUG: PDF export seems wrong with dash sequences that include a None offset","articleBody":"**Bug summary**\r\n\r\nCustom dash sequences of the form (None, on_off_seq) seem to be rendered as solid lines in PDF exports.\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\n\r\nfig, ax = plt.subplots(num=\"mwe\")\r\n\r\nlinestyles = ('dashed', '--', (None, (3.7, 1.6)), (0, (3.7, 1.6)))\r\nfor y, ls in enumerate(linestyles):\r\n    ax.plot([y]*2, ls=ls, label='{0}'.format(ls))\r\n\r\nax.set_ylim(-0.5, len(linestyles) - 0.5)  # useful on mpl \u003c 2\r\nax.legend()\r\n\r\nfor ext in ('.png', '.pdf'):\r\n    fig.savefig(fig.get_label() + ext)\r\n```\r\n\r\n**Actual outcome**\r\n![screenshot_of_mwe_v2 0 0](https://cloud.githubusercontent.com/assets/17270724/24504235/bf7cbe34-1555-11e7-96b4-05a00055b2a9.png)\r\nPlease note that the picture above is a manual screenshot of the PDF produced with Matplotlib. For an unknown reason, GitHub does not allow me to upload the original PDF file… \r\n\r\n**Expected outcome**\r\nSomething like the PNG export of the same plot:\r\n![mwe_v2 0 0](https://cloud.githubusercontent.com/assets/17270724/24503969/9f269c1e-1554-11e7-954f-bd0be9dbf6d8.png)\r\n\r\nBoth PNG and PDF look fine when exported with Matplotlib 1.5.1 (from conda). PDF export seems to be “broken” in this case both with Matplotlib 2.0.0 (from conda) and and master (from GitHub).\r\n\r\nOS: CentOS 7\r\nPython: 2.7\r\n","author":{"url":"https://github.com/afvincent","@type":"Person","name":"afvincent"},"datePublished":"2017-03-30T12:36:32.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/8405/matplotlib/issues/8405"}