René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Different line styles between PNG and PDF exports.","articleBody":"### Is the line style supposed to depend on the export backend?\n\n_MPL 1.5.1 is from Anaconda and MPL 2.x is from Github, both on Linux (CentOS 7)_\n\nWith MPL 1.5.1, I get the same line styles between both PDF and PNG exports:\n- PNG @ 100 DPI: \n\n![mpl_ver_1 5 1_100dpi](https://cloud.githubusercontent.com/assets/17270724/16085565/ba31196e-331c-11e6-8788-01ca2774bcce.png)\n- PDF @ None DPI: [MPL_ver_1.5.1_None.pdf](https://github.com/matplotlib/matplotlib/files/316429/MPL_ver_1.5.1_None.pdf)\n\nwhile with master version, they are different between PDF and PNG exports:\n- PNG @ 100 DPI: \n\n![mpl_ver_2 0 0b1 post1628 g1aba7c3_100dpi](https://cloud.githubusercontent.com/assets/17270724/16085566/ba8419de-331c-11e6-987c-527ed2194cfb.png)\n- PDF @ None DPI: [MPL_ver_2.0.0b1.post1628+g1aba7c3_None.pdf](https://github.com/matplotlib/matplotlib/files/316430/MPL_ver_2.0.0b1.post1628.g1aba7c3_None.pdf)\n\nNB: the problem seems to be independent from the DPI value: I get similar line styles between both PNG exports with 100 DPI and 300 DPI.\n- PNG @ 300 DPI: \n\n![mpl_ver_2 0 0b1 post1628 g1aba7c3_300](https://cloud.githubusercontent.com/assets/17270724/16085887/e244d8b8-331d-11e6-89b1-d6af79a79cbe.png)\n\nThe example snippet is\n\n``` python\nimport matplotlib\nimport matplotlib.pyplot as plt\nimport numpy as np\n\ntest_case = matplotlib.__version__\n\nfig, ax = plt.subplots(num=test_case, figsize=(4.8, 3.2))\nax.set_title(\"MPL version: {0:s}\".format(test_case))\n\nxx = np.array([0.0, 1.0])\n\nax.plot(xx, 1 * xx, ls='dashed', label='default lw')\nax.plot(xx, 2 * xx, ls='dashed', lw=2, label='lw=2')\nax.plot(xx, 3 * xx, ls='dashed', lw=3, label='lw=3')\n\nax.legend(loc='upper left')\n\nplt.show()\n\nfor ext, dpi in (('pdf', None), ('png', 100), ('png', 300)):\n    fig.savefig(\"MPL_ver_{v:s}_{d}.{e:s}\".format(v=test_case, d=dpi, e=ext),\n                dpi=dpi)\n```\n\nMy guess would that I may be somehow related to the new behavior introduced in #5926, _but I didn't have time to have a look yet_.\n","author":{"url":"https://github.com/afvincent","@type":"Person","name":"afvincent"},"datePublished":"2016-06-15T15:36:29.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/6588/matplotlib/issues/6588"}