René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Wrong datalims with empty plots with shared axes","articleBody":"``` python\nimport matplotlib.pyplot as plt\n\nfig, (ax1, ax2) = plt.subplots(1, 2, True, False)\nx1 = [1, 2, 3, 4, 5, 6, 7, 8, 9]\ny1 = [x*x for x in x1]\nax1.plot(x1, y1)\nx2=y2=[]\nax2.plot(x2, y2)\nplt.show()\n```\n\nNow ax1.get_xlim() returns erroneous (-0.06, 0.06) because when bounding boxes of two plots are united, infinitely small bounding box of ax2 (Bbox('array([[ inf,  inf],\\n       [-inf, -inf]])')) is considered infinitely large in transforms.BboxBase.union(). E. g. transforms.BboxBase.union([ax1.dataLim, ax2.dataLim]) returns Bbox('array([[-inf, -inf],\\n       [ inf,  inf]])') which is incorrect.\n\nThis bug prevents correct display of two plots with shared axis while one of them has empty data.\n","author":{"url":"https://github.com/pyatachyok","@type":"Person","name":"pyatachyok"},"datePublished":"2014-06-05T22:49:45.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/3118/matplotlib/issues/3118"}