René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Using a linestyle cycler with plt.errorbar results in strange plots","articleBody":"If the linestyles used in a `plt.errorbar` plot are adjusted manually, results are as expected. However, when using a `linestyle` cycler, the linestyles are simply ignored whereas using a `ls` cycler results in errorbar end points being connected by lines.\n\nConsider the following minimal example\n\n``` python\nimport numpy as np\nimport matplotlib as mpl\nimport matplotlib.pyplot as plt\nfrom cycler import cycler\n\nx = np.arange(0.1, 4, 0.5)\ny = np.exp(-x)\noffsets = [0, 1]\n\n\nlinestyles = ['-', '--']\n\nplt.figure()\nfor offset, linestyle in zip(offsets, linestyles):\n    plt.errorbar(x, y + offset, xerr=0.1, yerr=0.3, ls=linestyle, color='b')\nplt.title('manual plots')\nplt.savefig('manual_plots.png')\n\n\nlinestyle_cycle = cycler('linestyle', linestyles)\nmpl.rcParams['axes.prop_cycle'] = linestyle_cycle\n\nplt.figure()\nfor offset in offsets:\n    plt.errorbar(x, y + offset, xerr=0.1, yerr=0.3, color='b')\nplt.title('Linestyle cycler plots')\nplt.savefig('linestyle_cycler_plots.png')\n\n\nls_cycle = cycler('ls', linestyles)\nmpl.rcParams['axes.prop_cycle'] = ls_cycle\n\nplt.figure()\nfor offset in offsets:\n    plt.errorbar(x, y + offset, xerr=0.1, yerr=0.3, color='b')\nplt.title('ls cycler plots')\nplt.savefig('ls_cycler_plots.png')\n```\n\nwhich produces the following set of figures\n\n![manual_plots](https://cloud.githubusercontent.com/assets/5367057/18388683/e20efd1a-76a2-11e6-8c96-364205a656b0.png)\n![linestyle_cycler_plots](https://cloud.githubusercontent.com/assets/5367057/18388687/e670a52a-76a2-11e6-8f56-9c01664443c0.png)\n![ls_cycler_plots](https://cloud.githubusercontent.com/assets/5367057/18388690/e93dad52-76a2-11e6-8883-d2a526cab9d1.png)\n\nI ran the above example using Anaconda 4.1.1 with Python 3.5.2 and Matplotlib 1.5.1 on Linux.\n","author":{"url":"https://github.com/Chroxvi","@type":"Person","name":"Chroxvi"},"datePublished":"2016-09-09T13:44:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/7074/matplotlib/issues/7074"}