René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Hatches filling an empty color contour not saved in pdf ","articleBody":"\r\n\r\nI am trying to create a contour plot with the contours filled with hatches and no color. The following example works if I save it to .png but when I save it to .pdf the output is just the axis.\r\n![github](https://cloud.githubusercontent.com/assets/26870251/24703884/2f5ff954-19fd-11e7-8e89-99d0d588fbbe.png)\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n```python\r\nimport numpy as np\r\nimport matplotlib.pyplot as plt\r\n\r\n\r\n\r\ndelta = 0.025\r\n\r\nx = y = np.arange(-3.0, 3.01, delta)\r\n\r\n\r\nX, Y = np.meshgrid(x, y)\r\nZ1 = plt.mlab.bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0)\r\nZ2 = plt.mlab.bivariate_normal(X, Y, 1.5, 0.5, 1, 1)\r\nZ = 10 * (Z1 - Z2)\r\n\r\n\r\nlevels=[0,1]\r\nplt.contourf(X, Y, Z/X, \r\n                  levels,\r\n                  #alpha=0.5,\r\n                  colors='none', label='AGH',\r\n                   hatches=['\\\\'])\r\n\r\nplt.tight_layout()   \r\n\r\nplt.savefig('GitHub.pdf')\r\nplt.show()\r\n```\r\n\r\n\r\n\r\n\r\n\r\nI am using Matplotlib2.00 in Linux, installed  from source.\r\n\r\n","author":{"url":"https://github.com/andres0l1","@type":"Person","name":"andres0l1"},"datePublished":"2017-04-05T11:41:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":13},"url":"https://github.com/8431/matplotlib/issues/8431"}