René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"bbox images do not get placed properly when figure is saved to png or pdf","articleBody":"When I create a figure using bbox images, everything looks fine, but when I save the figure, the images move.  Here is an example\n\n```\nimport matplotlib.pyplot as plt\nimport numpy as np\nfrom matplotlib.image import BboxImage\nfrom matplotlib.transforms import Bbox, TransformedBbox\n\n#Generate the image\nim = np.random.rand(10, 10) * 255.0\n\n#Set up figure\nfig = plt.figure()\nax = fig.add_axes([0.1,0.1,0.8,0.8])\nax.set_xlim(-2,24)\nax.set_ylim(0,10)\n\n#Create image that transforms automatically\nbbox1 = Bbox.from_extents([0,0,10,10])\ntrans_bbox1 = TransformedBbox(bbox1, ax.transData)\nbbox_image1 = BboxImage(trans_bbox1)\nbbox_image1.set_data(im)\nax.add_image(bbox_image1)\n\n#Create image that does not transform\nbbox2 = Bbox.from_extents([12,0,22,10])\ntrans_bbox2 = bbox2.transformed(ax.transData)\nbbox_image2 = BboxImage(trans_bbox2)\nbbox_image2.set_data(im)\nax.add_image(bbox_image2)\n\n#Save the result\nfig.savefig('png_test.png')\nfig.savefig('pdf_test.pdf')\n```\n\nIf I take a screenshot of the figure window, it looks like this\n![screenshot](https://cloud.githubusercontent.com/assets/4099759/5422678/7c175458-824d-11e4-98c2-077af0a6b101.png)\nwhich is what I expect.  However, when I look at the 'png_test.png', the second image that did not use the `TransformedBbox` moves, as shown below\n![png_test](https://cloud.githubusercontent.com/assets/4099759/5422682/b8bedb42-824d-11e4-8d6f-5f61ba3aae3b.png)\nIn the pdf, both images move, as shown below\n![pdf_test](https://cloud.githubusercontent.com/assets/4099759/5422689/eceb7010-824d-11e4-8682-9576bab2111b.png)\n\nIn case it matters, I am using the Qt4Agg interactive backend with the Spyder IDE.  My matplotlib version is 1.4.0.\n","author":{"url":"https://github.com/breedlun","@type":"Person","name":"breedlun"},"datePublished":"2014-12-13T05:29:26.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":20},"url":"https://github.com/3918/matplotlib/issues/3918"}