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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"scatter not showing valid x/y points with invalid color","articleBody":"`scatter` plots are removing points with valid x/y coordinates but invalid color value. As colormaps have a special setting for what color should be used in case of invalid data points (used e.g. in `imshow` array plots) maybe these points should indeed be plotted and plotted with the specified \"bad value\" color.\n\nConsider this example:\n\n``` python\nimport matplotlib.pyplot as plt\nfrom matplotlib.cm import spring\nimport numpy as np\n\nspring.set_bad(\"k\", 1)\n\ncolors = np.array([1, 3, 9, np.nan])\nx = [0, 1, 2, 3]\n\nplt.figure()\nplt.imshow(colors.reshape((2, 2)), interpolation=\"nearest\", cmap=spring)\n\nplt.figure()\nplt.scatter(x, x, s=1e4, c=colors, cmap=spring)\nplt.show()\n```\n\nThe right-hand side `scatter` plot is not showing the `x=3`, `y=3`, `color=np.nan` data point:\n\n![figure_1](https://cloud.githubusercontent.com/assets/1842780/7219252/88a221ea-e697-11e4-8862-421f6d1115ee.png)\n","author":{"url":"https://github.com/megies","@type":"Person","name":"megies"},"datePublished":"2015-04-19T11:28:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/4354/matplotlib/issues/4354"}