René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[ENH]: use new style format strings for colorbar ticks","articleBody":"### Problem\n\nAt the moment, the default format strings in colorbar are old style ones, as in their init there is:\r\n\r\nhttps://github.com/matplotlib/matplotlib/blob/67e18148d87db04d2c8d4293ff12c56fbbb7fde8/lib/matplotlib/colorbar.py#L489-L492\r\n\r\nwhich is a different convention from the one of a normal axis, which was introduced in #16715. \n\n### Proposed solution\n\nAs in `update_ticks` we pass the colorbar's formatter to the long axis,\r\n\r\nhttps://github.com/matplotlib/matplotlib/blob/67e18148d87db04d2c8d4293ff12c56fbbb7fde8/lib/matplotlib/colorbar.py#L801\r\n\r\nthe `if` statement above may be removed to keep the default logic only in `Axis`. Right now one can pass a callable directly (although that's not documented), and the default behaviour from #16715 is triggered. However, I guess making this change for format strings would imply a deprecation cycle, as it breaks current behaviour. Another option would be to check in `Axis._set_formatter`  for what kind of string format we've been passed (unsure how, although there must be way).\n\n### Additional context and prior art\n\n_No response_","author":{"url":"https://github.com/TLouf","@type":"Person","name":"TLouf"},"datePublished":"2021-10-18T14:05:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/21378/matplotlib/issues/21378"}