René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Quiverkey() positions arrow incorrectly with labelpos 'N' or 'S'","articleBody":"The documentation for `quiverkey()` in versions 1.3 through 1.5 states that\n\n\u003e If _labelpos_ is 'N' or 'S', _X_, _Y_ give the position of the middle of the key arrow.\n\nThis guarantee is clearly violated in version 1.5:\n\n![quiver_1 4 3](https://cloud.githubusercontent.com/assets/906137/11569778/b3f8ee5e-99c1-11e5-804a-1cfebd8ebc5d.png)\n![quiver_1 5 0](https://cloud.githubusercontent.com/assets/906137/11569782/b653cf0c-99c1-11e5-9082-3bdd125e737f.png)\n![quiver_1 5 0 548 g9230cac](https://cloud.githubusercontent.com/assets/906137/11569783/b7907b72-99c1-11e5-8168-616b3e107b6f.png)\n\nThe script that generated these figures is\n\n```\nimport numpy\nimport matplotlib\nfrom matplotlib import pyplot\n\nplot = pyplot.quiver(*numpy.random.rand(2, 10, 10))\npyplot.xlim(-2, 12)\npyplot.ylim(-2, 12)\npyplot.quiverkey(plot, 0.5, 1, 1, 'N', labelpos='N')\npyplot.quiverkey(plot, 1, 0.5, 1, 'E', labelpos='E')\npyplot.quiverkey(plot, 0.5, 0, 1, 'S', labelpos='S')\npyplot.quiverkey(plot, 0, 0.5, 1, 'W', labelpos='W')\npyplot.annotate(matplotlib.__version__, (0, 0), (-1, 11), 'data', 'data',\n  ha='left')\npyplot.savefig('quiver_{}.png'.format(matplotlib.__version__))\n```\n","author":{"url":"https://github.com/EdwinChan","@type":"Person","name":"EdwinChan"},"datePublished":"2015-12-03T18:31:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/5613/matplotlib/issues/5613"}