René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: colorbar doesn't register inset_axis as cax ","articleBody":"### Bug summary\n\nWhen constructing inset axes using the tutorial on [this page](https://matplotlib.org/stable/gallery/axes_grid1/demo_colorbar_with_inset_locator.html) the gradient of the colorbar does not appear in the constructed inset axis but somewhere else on the figure (location seems to depend on figure size) once saved to a PDF with multiple other figures if bbox_inches='tight'. Similar to #27143 and #25176.\n\n### Code for reproduction\n\n```python\nfrom mpl_toolkits.axes_grid1.inset_locator import inset_axes\r\nimport matplotlib.pylab as plt\r\nfrom matplotlib.backends.backend_pdf import PdfPages\r\n\r\n#make the first figure\r\nfig, axes = plt.subplots(1, 1, facecolor = 'white', figsize = (20, 5), constrained_layout = True)\r\n\r\nx = random.randint(100, size=(100, 2048))\r\nc = axes.imshow(x, origin = 'lower', cmap = 'Reds', vmin = 0, vmax = 100, aspect = \"auto\")\r\naxins1 = inset_axes(axes,\r\n                    width=\"10%\",\r\n                    height=\"30%\",\r\n                    loc=\"upper left\",\r\n                    bbox_to_anchor = (0.045, 0., 1, 1),\r\n                    bbox_transform = axes.transAxes\r\n                    )\r\naxins1.xaxis.set_ticks_position(\"bottom\")\r\nfig.colorbar(c, cax=axins1, orientation=\"horizontal\")\r\naxes.set_yticklabels([])\r\n\r\nfig.suptitle(\"Title\")\r\nplt.figtext(-0.02, 0.5, 'Random', c = 'k', rotation = 90, ma = 'center', fontsize = medium)\r\n\r\n#make figure 2\r\nfig2, axes = plt.subplots(1, 1, facecolor = 'white', figsize = (20, 5), constrained_layout = True)\r\n\r\nx = random.randint(100, size=(100, 2048))\r\nc = axes.imshow(x, origin = 'lower', cmap = 'Reds', vmin = 0, vmax = 100, aspect = \"auto\")\r\naxins1 = inset_axes(axes,\r\n                    width=\"10%\",\r\n                    height=\"30%\",\r\n                    loc=\"upper left\",\r\n                    bbox_to_anchor = (0.045, 0., 1, 1),\r\n                    bbox_transform = axes.transAxes\r\n                    )\r\naxins1.xaxis.set_ticks_position(\"bottom\")\r\nfig2.colorbar(c, cax=axins1, orientation=\"horizontal\")\r\naxes.set_yticklabels([])\r\n\r\nfig2.suptitle(\"Title\")\r\nplt.figtext(-0.02, 0.5, 'Random', c = 'k', rotation = 90, ma = 'center', fontsize = medium)\r\n\r\n#save figs to PDF\r\nfigs = [fig, fig2]\r\nwith PdfPages('test.pdf') as pdf:\r\n    for fig in figs:\r\n        pdf.savefig(fig, bbox_inches='tight')\n```\n\n\n### Actual outcome\n\nThe gradient for the colorbar appears outside of the inset axes on each of the plots\r\n[test_small.pdf](https://github.com/matplotlib/matplotlib/files/14215554/test_small.pdf)\r\n\n\n### Expected outcome\n\nThe result for this particular example when bbox_inches='tight' is not called in savefig(). Note: when running in jupyter lab this is always the outcome--only when saving the figure does the gradient jump out of the inset axis.\r\n[test_loose.pdf](https://github.com/matplotlib/matplotlib/files/14215555/test_loose.pdf)\r\n\n\n### Additional information\n\nI tried the same suggestion as in #27143 and used `axins1 = axes.inset_axes([0.05, 0.7, 0.1, 0.2], transform = axes.transAxes)` in my own code which seemed to fix this. Unsure why the example constructor for inset_axes [here](https://matplotlib.org/stable/gallery/axes_grid1/demo_colorbar_with_inset_locator.html) doesn't work in this case.\n\n### Operating system\n\nMac OS 13.6.3 (Ventura) Intel\n\n### Matplotlib Version\n\n3.8.0\n\n### Matplotlib Backend\n\nInstalled osx event loop hook. MacOSX\n\n### Python version\n\nPython 3.9.18\n\n### Jupyter version\n\nJupyter Lab 3.6.3\n\n### Installation\n\nconda","author":{"url":"https://github.com/ericasaw","@type":"Person","name":"ericasaw"},"datePublished":"2024-02-08T23:28:26.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/27763/matplotlib/issues/27763"}