René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: inset_axes position same as parent axes position.  Breaks indicate_axes_zoom","articleBody":"### Bug summary\r\n\r\nAn inset axes created using `mpl_toolkits.axes_grid1.inset_locator.inset_axes` seems to inherit its position from the parent axes.  This prevents any connection lines being drawn by `indicate_inset_zoom` showing up, as [their \"visible\" attributes depend on the result of get_position](https://github.com/matplotlib/matplotlib/blob/710fce3df95e22701bd68bf6af2c8adbc9d67a79/lib/matplotlib/axes/_axes.py#L467-L479).\r\n\r\n\r\n\r\n### Code for reproduction\r\n\r\n```python\r\n# Adapted from the gallery example, but replacing the axes method with the function from toolkits.\r\n\r\nfrom matplotlib import cbook\r\nimport matplotlib.pyplot as plt\r\nfrom mpl_toolkits.axes_grid1.inset_locator import inset_axes\r\nimport numpy as np\r\n\r\n\r\ndef get_demo_image():\r\n    z = cbook.get_sample_data(\"axes_grid/bivariate_normal.npy\", np_load=True)\r\n    # z is a numpy array of 15x15\r\n    return z, (-3, 4, -4, 3)\r\n\r\nfig, ax = plt.subplots(figsize=[5, 4])\r\n\r\n# make data\r\nZ, extent = get_demo_image()\r\nZ2 = np.zeros((150, 150))\r\nny, nx = Z.shape\r\nZ2[30:30+ny, 30:30+nx] = Z\r\n\r\nax.imshow(Z2, extent=extent, origin=\"lower\")\r\n\r\n# inset axes....\r\naxins = inset_axes(ax, width=\"50%\", height=\"50%\")\r\naxins.imshow(Z2, extent=extent, origin=\"lower\")\r\n\r\n# sub region of the original image\r\nx1, x2, y1, y2 = -1.5, -0.9, -2.5, -1.9\r\naxins.set_xlim(x1, x2)\r\naxins.set_ylim(y1, y2)\r\naxins.set_xticklabels([])\r\naxins.set_yticklabels([])\r\n\r\nprint(\"main axes position:\", ax.get_position())\r\nprint(\"inset axes position:\", axins.get_position())\r\n\r\nax.indicate_inset_zoom(axins, edgecolor=\"black\")\r\n\r\nplt.show()\r\n```\r\n\r\n\r\n### Actual outcome\r\n\r\n```\r\nmain axes position: Bbox(x0=0.20449999999999996, y0=0.10999999999999999, x1=0.8205, y1=0.88)\r\ninset axes position: Bbox(x0=0.20449999999999996, y0=0.10999999999999999, x1=0.8205, y1=0.88)\r\n```\r\n\r\n![zoom_no_indicate](https://user-images.githubusercontent.com/10599679/156891838-5462649a-2012-44e3-9fc3-7e69a114c32a.png)\r\n\r\n\r\n### Expected outcome\r\n\r\nPlot should have connecting lines, similar to the [zoom region inset axes](https://matplotlib.org/stable/gallery/subplots_axes_and_figures/zoom_inset_axes.html#sphx-glr-gallery-subplots-axes-and-figures-zoom-inset-axes-py) gallery example.\r\n\r\n### Additional information\r\n\r\n_No response_\r\n\r\n### Operating system\r\n\r\nRHEL\r\n\r\n### Matplotlib Version\r\n\r\n3.5.1\r\n\r\n### Matplotlib Backend\r\n\r\nTKAgg\r\n\r\n### Python version\r\n\r\n3.10.2\r\n\r\n### Jupyter version\r\n\r\n_No response_\r\n\r\n### Installation\r\n\r\nconda","author":{"url":"https://github.com/rcomer","@type":"Person","name":"rcomer"},"datePublished":"2022-03-05T16:40:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/22606/matplotlib/issues/22606"}