René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"imshow interpolation uses masked values","articleBody":"### Bug report\r\n\r\nI recently upgraded to v2.0.0 and noticed that the new imshow interpolation is not honoring masked values.  This is likely related to the new edge handling, described here: http://matplotlib.org/examples/pylab_examples/image_interp.html\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\na = np.random.random((7,7))*1000\r\nndv = -9999.0\r\na[2:4,1:5] = ndv\r\nam = np.ma.masked_equal(a, ndv)\r\n\r\nplt.figure()\r\n#Plot with no interpolation, looks fine\r\nplt.imshow(am, interpolation='none')\r\nplt.title(\"interpolation='none'\")\r\n#Plot with bilinear interpolation, the -9999.0 values are used \r\nplt.imshow(am, interpolation='bilinear')\r\nplt.title(\"interpolation='bilinear'\")\r\n```\r\n\r\n**Actual outcome**\r\n\r\n![none](https://cloud.githubusercontent.com/assets/1103530/22578435/9caeb99c-e97d-11e6-9b57-056f348f9048.png)\r\n\r\n![bilinear](https://cloud.githubusercontent.com/assets/1103530/22578437/a01c81fe-e97d-11e6-9fc7-b60fdae837cb.png)\r\n\r\n**Expected outcome**\r\n\r\nThe interpolation should ignore masked values as in previous versions.\r\n\r\n**Matplotlib version**\r\n\r\n- Matplotlib v2.0.0, Python 2.7.13, OSX\r\n- installed from pip\r\n\r\n","author":{"url":"https://github.com/dshean","@type":"Person","name":"dshean"},"datePublished":"2017-02-03T03:30:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/8012/matplotlib/issues/8012"}