René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Colorbars need tests...","articleBody":"Follow up to #16280, we need tests for colorbars.  i.e.\r\n\r\n```python\r\n@image_comparison(\r\n     baseline_images=['colorbar_norms'], extensions=['png'])\r\n def test_cbar_norms():\r\n     # Test colormaps with different norms\r\n     norms = [mcolors.Normalize(vmin=-1, vmax=2),\r\n              mcolors.BoundaryNorm(boundaries=[-1, 0, 1], ncolors=4),\r\n              mcolors.LogNorm(vmin=1, vmax=1e4),\r\n              mcolors.PowerNorm(gamma=0.2, vmin=0.1, vmax=0.6),\r\n              mcolors.SymLogNorm(1, vmin=-10, vmax=10),\r\n              mcolors.TwoSlopeNorm(1, vmin=0, vmax=2)]\r\n     fig, axs = plt.subplots(ncols=len(norms), constrained_layout=True)\r\n     for ax, norm in zip(axs, norms):\r\n         fig.colorbar(cm.ScalarMappable(norm=norm, cmap='viridis'), cax=ax, extend='both')\r\n```\r\n\r\nbut we can't do them yet because `SymLogNorm` (for instance) is not quite correct yet...\r\n\r\nSee also #16392, #16286 where this test originally came from...","author":{"url":"https://github.com/jklymak","@type":"Person","name":"jklymak"},"datePublished":"2020-02-03T17:41:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/16398/matplotlib/issues/16398"}