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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"get error when show a picture(image) : 'numpy.ndarray' object has no attribute 'mask'","articleBody":"\r\nHi\r\n\r\nI was using python3.5.2, numpy 1.14.1, and matplotlib 2.1.2 and encountered a problem when I attempted to show a picture with pyplot. It always gave errors saying 'numpy.ndarray object has no attribute mask', and the related source code seemed in 'matplotlib/image.py'.\r\n\r\nI'm not sure whether it was caused by matplotlib or numpy.  How do I fix this ?\r\n\r\n```shell\r\n$ python3\r\nPython 3.5.2 (default, Nov 23 2017, 16:37:01) \r\n[GCC 5.4.0 20160609] on linux\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e import matplotlib.pyplot as plt\r\n\u003e\u003e\u003e from PIL import Image\r\n\u003e\u003e\u003e img=Image.open('test.jpg')\r\n\u003e\u003e\u003e imgfig = plt.figure()\r\n\u003e\u003e\u003e imgplt = imgfig.add_subplot(111)\r\n\u003e\u003e\u003e imgplt.imshow(img)\r\n\u003cmatplotlib.image.AxesImage object at 0x7ff142877438\u003e\r\n\u003e\u003e\u003e plt.show()\r\nException in Tkinter callback\r\nTraceback (most recent call last):\r\n  File \"/usr/lib/python3.5/tkinter/__init__.py\", line 1553, in __call__\r\n    return self.func(*args)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py\", line 233, in resize\r\n    self.show()\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py\", line 304, in draw\r\n    FigureCanvasAgg.draw(self)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_agg.py\", line 430, in draw\r\n    self.figure.draw(self.renderer)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py\", line 55, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/figure.py\", line 1299, in draw\r\n    renderer, self, artists, self.suppressComposite)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 138, in _draw_list_compositing_images\r\n    a.draw(renderer)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py\", line 55, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/axes/_base.py\", line 2437, in draw\r\n    mimage._draw_list_compositing_images(renderer, self, artists)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 138, in _draw_list_compositing_images\r\n    a.draw(renderer)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py\", line 55, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 566, in draw\r\n    renderer, renderer.get_image_magnification())\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 793, in make_image\r\n    unsampled=unsampled)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 430, in _make_image\r\n    if A.mask.shape == A.shape:\r\nAttributeError: 'numpy.ndarray' object has no attribute 'mask'\r\nException in Tkinter callback\r\nTraceback (most recent call last):\r\n  File \"/usr/lib/python3.5/tkinter/__init__.py\", line 1553, in __call__\r\n    return self.func(*args)\r\n  File \"/usr/lib/python3.5/tkinter/__init__.py\", line 599, in callit\r\n    func(*args)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py\", line 323, in idle_draw\r\n    self.draw()\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py\", line 304, in draw\r\n    FigureCanvasAgg.draw(self)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_agg.py\", line 430, in draw\r\n    self.figure.draw(self.renderer)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py\", line 55, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/figure.py\", line 1299, in draw\r\n    renderer, self, artists, self.suppressComposite)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 138, in _draw_list_compositing_images\r\n    a.draw(renderer)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py\", line 55, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/axes/_base.py\", line 2437, in draw\r\n    mimage._draw_list_compositing_images(renderer, self, artists)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 138, in _draw_list_compositing_images\r\n    a.draw(renderer)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py\", line 55, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 566, in draw\r\n    renderer, renderer.get_image_magnification())\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 793, in make_image\r\n    unsampled=unsampled)\r\n  File \"/usr/local/lib/python3.5/dist-packages/matplotlib/image.py\", line 430, in _make_image\r\n    if A.mask.shape == A.shape:\r\nAttributeError: 'numpy.ndarray' object has no attribute 'mask'\r\n```\r\n","author":{"url":"https://github.com/NewThinker-Jeffrey","@type":"Person","name":"NewThinker-Jeffrey"},"datePublished":"2018-02-27T03:07:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":16},"url":"https://github.com/10616/matplotlib/issues/10616"}