René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Shadow applied to a simple patch does not show","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nAdding a shadow to a patch as described in the [documentation](https://matplotlib.org/devdocs/api/_as_gen/matplotlib.patches.Shadow.html) does nothing. From the documentation it appears as if `matplotlib.patches.Shadow` accepts a `patch` object. I am also not clear on the units of the required `ox` and `oy` properties.\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\nimport matplotlib.patches as mpatches\r\n\r\nfig, ax = plt.subplots(1, 1, figsize=(5, 5))\r\n\r\nrectangle = mpatches.Rectangle(\r\n    xy=(0.25, 0.25),\r\n    width=1/2,\r\n    height=1/2)\r\n\r\nshadow = mpatches.Shadow(\r\n    rectangle,\r\n    ox=0.5,\r\n    oy=0.5)\r\n\r\nax.add_patch(rectangle)\r\nax.add_patch(shadow)\r\n```\r\n\r\n**Actual outcome**\r\n\r\n![download](https://user-images.githubusercontent.com/4634699/31471867-e485db64-ae9f-11e7-964a-39fcdd1916e6.png)\r\n\r\n\r\n**Expected outcome**\r\n\r\nA shadow of the blue rectangle patch nearby.\r\n\r\n**Matplotlib version**\r\n\u003c!--Please specify your platform and versions of the relevant libraries you are using:--\u003e\r\n  * Operating system: Manjaro 17.0.5\r\n  * Matplotlib version: (2.0.2)\r\n  * Matplotlib backend: module://ipykernel.pylab.backend_inline\r\n  * Python version: 3.6.2\r\n\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n\r\nI installed `matplotlib` via the Arch package repositories at `sudo pacman -S python-matplotlib`.\r\n\r\n**Edit:** added a missing import to make the example self-sufficient. (afvincent)","author":{"url":"https://github.com/clintval","@type":"Person","name":"clintval"},"datePublished":"2017-10-11T23:23:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/9377/matplotlib/issues/9377"}