René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"set_url() without effect in the plot for instances of Tick","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nUsing SVG back-end, setting the url attribute in objects of class Tick does nothing regarding the final plot, whereas it does for other objects.\r\n\r\n**Code for reproduction**\r\n\r\nIt is an extension of the [hyperlinks example](https://github.com/matplotlib/matplotlib/blob/master/examples/misc/hyperlinks_sgskip.py) to\r\nto deal with hyperlinks in the ticks:\r\n\r\n```python\r\nimport matplotlib as mpl\r\nmpl.use('SVG')\r\nimport matplotlib.pyplot as plt\r\n\r\nf = plt.figure()\r\nax = f.gca()\r\ns = plt.scatter([1, 2, 3], [4, 5, 6])\r\ns.set_urls(['http://www.bbc.co.uk/news', 'http://www.google.com', None])\r\nfor tick, pos, label in ax.yaxis.iter_ticks():\r\n    tick.set_url('http://www.python.org')\r\n    print(tick.get_url(), pos, label)\r\nf.savefig('scatter.svg')\r\n```\r\n\r\n**Actual outcome**\r\n\r\nI get:\r\n\r\n```\r\nhttp://www.python.org 3.75 3.75\r\nhttp://www.python.org 4.0 4.00\r\nhttp://www.python.org 4.25 4.25\r\n.....\r\nhttp://www.python.org 6.25 6.25\r\n```\r\nSo it properly changes the `url` attribute. Unfortunately, the svg file generated has no trace of the ticks hyperlinks:\r\n\r\n```\r\n\u003e grep python scatter.svg\r\n\u003e\r\n```\r\n...while it does for the scatter plot links, for instance:\r\n\r\n```\r\n \u003e egrep google scatter.svg\r\n    \u003ca xlink:href=\"http://www.google.com\"\u003e\r\n```\r\n\r\n**Expected outcome**\r\n```\r\n\u003e egrep python scatter.svg\r\n      \u003ca xlink:href=\"http://www.python.org\"\u003e\r\n      \u003ca xlink:href=\"http://www.python.org\"\u003e\r\n.....\r\n      \u003ca xlink:href=\"http://www.python.org\"\u003e\r\n```\r\n\r\n**Matplotlib version**\r\n  * Operating system:\r\n  * Matplotlib version: current dev ('2.1.0.post658.dev0+g39694f2)\r\n  * Matplotlib backend: SVG \r\n  * Python version: 3.6.3\r\n\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n\r\n**Posible cause and suggested solution**\r\nI traced the problem to the Trick class, where the `url` attribute is not passed to any of the objects that are to be drawn. My successful workaround has been to override the `set_url()` method in the class Tick to transfer the `url` attribute content to the tick labels, that are to be drawn. I'll prepare a PR with this simple solution to be evaluated.","author":{"url":"https://github.com/khyox","@type":"Person","name":"khyox"},"datePublished":"2017-11-06T04:45:26.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/9695/matplotlib/issues/9695"}