René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"nbagg: \"Close figure\" action does not 'close' the figure object","articleBody":"I am not fully sure how the notebook backend is supposed to work (and I also did not found any documentation on it?), but the following did surprise me a bit:\n\n```\n%matplotlib notebook\n\nimport matplotlib.pyplot as plt\nimport numpy as np\n\nt = np.linspace(0, 2*np.pi, 1024)\nplt.plot(t, np.sin(t), t, -np.sin(t))\n```\n\nThe above creates an interactive figure in the notebook. \nBut when I close it (the red button with cross) and the figure is displayed in the notebook as a static image, a subsequent plotting call does nothing:\n\n```\nplt.plot(t, np.sin(t), t, np.cos(t))\n```\n\nIt is only when I explicitely create a new figure that it is displayed:\n\n```\nplt.figure()\nplt.plot(t, np.sin(t), t, np.cos(t))\n```\n\nor if I explicitly close the previous figures with e.g. `plt.close('all')`.\n\nSo to me it seems like the `plt.plot` call is still seeing the original figure as the current figure and so trying to plot it on this original figure, but as this is already displayed as a static image in the previous cell, this does not do anything.\n\nI don't know if this is on purpose, but e.g. with the qt or gtk backend when you close a figure, `plt.plot` will create a new figure automatically, and not trying to plot on the current figure anymore (as this is closed).\n\n---\n\nmatplotlib 1.4.3, ipython 3.0, windows 7\n","author":{"url":"https://github.com/jorisvandenbossche","@type":"Person","name":"jorisvandenbossche"},"datePublished":"2015-03-26T13:24:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/4281/matplotlib/issues/4281"}