René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Interactive plots stay small when process busy on HiDPI displays","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nWhen using `%matplotlib notebook` in Jupyter Notebooks on a HiDPI screen (tested on multiple MacBooks of different generations), the plot stays half-sized until the cell is finished with all its computations. \r\n\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\n%matplotlib notebook\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np\r\nimport time\r\n\r\ndef draw(ax):\r\n    \"\"\"Scatter some new data into an axis.\"\"\"\r\n    ax.cla()\r\n    ax.scatter(*np.random.rand(2, 1000))\r\n    ax.get_figure().canvas.draw()\r\n\r\n_, ax = plt.subplots(1, 1)\r\n\r\nfor _ in range(10):\r\n    # Draw some new data\r\n    draw(ax)\r\n    # Do some intermediate computations\r\n    time.sleep(.1)\r\n\r\n# Plot wont upscale till this sleep is over\r\ntime.sleep(10)\r\n```\r\n\r\n**Actual outcome**\r\n\r\nPlots stay small until last `sleep` finishes.\r\n\r\n**Expected outcome**\r\n\r\nPlots should rescale to screen's DPI right after initial drawing.\r\n\r\n**Matplotlib version**\r\n\r\n  * Operating system: Ubuntu 16.04 / macOS 10.13\r\n  * Matplotlib version: `2.1.2`\r\n  * Matplotlib backend: `nbAgg`\r\n  * Python version: `3.6.4`\r\n  * Jupyter version: `4.4.0`\r\n\r\n**Other Information**\r\n\r\n#5383 is probably relevant for when attempting to fix this problem.","author":{"url":"https://github.com/ahoereth","@type":"Person","name":"ahoereth"},"datePublished":"2018-02-14T11:27:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/10456/matplotlib/issues/10456"}