René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Add zoom_factory to matplotlib - where to put?","articleBody":"\u003c!--To help us understand and resolve your issue, please fill out the form to the best of your ability.--\u003e\r\n\u003c!--You can feel free to delete the sections that do not apply.--\u003e\r\n\r\n@tacaswell wrote a `zoom_factory` function that enables zooming with the mouse scroll wheel in this gist: https://gist.github.com/tacaswell/3144287 this is very useful and would be great if it was offered as a utility function by matplotlib. In https://github.com/ianhi/ipympl-interactions/pull/21#issuecomment-665743059 tacaswell wrote:\r\n\u003e  I am :+1: on a PR to core Matplotlib to add that factory (not sure where) as it is useful in all backends (not just ipympl).\r\n\r\nSo this issue is to discuss whether/where to incorporate the `zoom_factory` function. Two initial suggestions:\r\n1. in the toolbar\r\n2. in pyplot\r\n   - Architecturally I don't think this makes as much sense but as a user I don't think I would expect to look at the toolbar for utility methods\r\n\r\nAdditionally I forked that gist (https://gist.github.com/ianhi/b638e09fa7a00764ea539940a0519af9) and added two things:\r\n1. push initial position to toolbar navstack so the home button works as expected\r\n2. automatic centering when zoomed out past initial bounds\r\n    - This could be made optional\r\n\r\n if this were to be incorporated in matplotlib it would be nice to have those features as well. \r\n\r\nHere is a gif of this with with some extra code to allow middle click to pan(https://gist.github.com/ianhi/5f514c31f13cc28fbd167849867122b7):\r\n\u003cimg src=https://raw.githubusercontent.com/ianhi/ipympl-interactions/d423ac6b13a7f4565d2bac0f11701df5afaa3d5a/docs/images/zoom-and-pan.gif\u003e\r\n\r\n","author":{"url":"https://github.com/ianhi","@type":"Person","name":"ianhi"},"datePublished":"2020-08-03T14:45:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/18159/matplotlib/issues/18159"}