René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Location of subplot.set_aspect(...) matters for imshow","articleBody":"The location of the command `subplot.set_aspect('auto')` - whether it is before or after the command `subplot.imshow(...)` - determines whether the aspect ratio is properly set. The aspect ratio is properly set only if the `set_aspect` command follows the `imshow` command. The same holds true if other values are passed to `set_aspect`, such as `set_aspect(0.05)`.\n\nThis discrepancy is most pronounced for plots with very disproportionate vertical and horizontal ranges. An example code is given below:\n\n```\nx = range(10)\ny = [10**_ for _ in range(10)]\nxmuly = [[i*j for j in y] for i in x]\n# Uncomment this and comment the set_aspect below imshow to see the bug.\n#subplot.set_aspect('auto', adjustable='box')\nsubplot.imshow(xmuly, origin='lower', cmap='jet', extent=[0,9,10**0,10**9], interpolation='catrom')\nsubplot.set_aspect('auto', adjustable='box')\n```\n\nThis code can be tested live [here](http://aleph.sagemath.org/?z=eJyNUk1vozAQvftXjNQDsEIoHHvgUK20_6CnKEUDDI6zYCN7SMm_72CSJu1Kq15gPt58vOfpvRthRJ4Gx4Npit7o2ROYcXKe4U_0VP8N1GD7l2wXbkaNWn8t-Y32jOFFa6WuHatrJs1UmJu1k4S2XIFdV1-DaVmWmVKLJD1aTWm5y9RFvH25e6uhdx5qMPaePKhlnIeI2Jtfp4g4rYjLIdpmtZeDUk_wals3jmQZ-GgCoO3gHiAIxDWGiVqGhgb3LozCUX7sJEUR0sy6UE_XVYt7QZrgzC7JAbvTHBibgaqkcUvySbbYmqVx2RycN9rYKpEx5KWuHXGqkhOx2LSwrFTtd_lzLqR36-f5kAsPJj-5Adk4KW2R5VkeJvxonf_LgI070z-8kcEwdI6CVFt5ODkFWQXejySi-EfhpJ94op9IT8ISsF-Rq3brjlK_jpKRuWgZ2269wvZWcfCDwvEilhwu2e2OIss2Xlf67dTSDZFlNygbfeR6wIubOf2MBjyTmKJRMVmdZB9VHguM\u0026lang=sage).\n\nThis problem is not present when `subplot.plot(...)` is used. The aspect ratio is always correctly set irrespective of whether the `set_aspect` command comes before or after the `plot` command.\n\nCorresponding Sage ticket: http://trac.sagemath.org/15315\n","author":{"url":"https://github.com/ppurka","@type":"Person","name":"ppurka"},"datePublished":"2013-10-23T18:22:34.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/2540/matplotlib/issues/2540"}