René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"weighted_wiggle stackplot fails when all lines are zero at same x","articleBody":"When using `stackplot(..., baseline='weighted_wiggle')` if all `y` arrays contain zero at some (interval of) `x` the plot stops rendering after that zero point.\n\n``` python\nimport numpy as np\nimport matplotlib.pyplot as plt\n\nx = np.arange(10)\ny = np.random.random(10)\ny2 = np.random.random(10)\ny3 = np.random.random(10)\n\ny[5] = 0\ny3[5] = 0\n\nfig, ax = plt.subplots(3,2, figsize=(12,8))\n\nax[0,0].stackplot(x, y, baseline='sym')\nax[0,1].stackplot(x, y, baseline='weighted_wiggle')\nax[1,0].stackplot(x, y, y2, baseline='sym')\nax[1,1].stackplot(x, y, y2, baseline='weighted_wiggle')\nax[2,0].stackplot(x, y, y3, baseline='sym')\nax[2,1].stackplot(x, y, y3, baseline='weighted_wiggle')\n\nax[0,0].set_title('sym: no problem')\nax[0,1].set_title('failed: stops after zero `y` (x\u003e4)')\nax[1,1].set_title('success: non-zero `y2` saves the day')\nax[2,1].set_title('failed: stops after zero `y` and `y3` (x\u003e4)')\n\nplt.tight_layout()\nplt.show()\n```\n\nI have this issue with Matplotlib 1.5.1, installed via pip, with Python 2.7.10 on Ubuntu Linux 15.10.\n","author":{"url":"https://github.com/egpbos","@type":"Person","name":"egpbos"},"datePublished":"2016-04-18T11:32:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/6313/matplotlib/issues/6313"}