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Add image value to x=, y= cursor text. #2477
Description
In Matlab, imshow pets you see the data value under the mouse cursor. This would be helpful in Matplotlib. I'm thinking it would go at to bottom of the window where the mouse-position text is.
This seems like it should be easy to add. I'm just not sure where I need to look to add it. If someone can tell me where to look, I'll take a stab at it. Where is the code that does the x=, y= text?
Activity
tonysyu commentedon Sep 30, 2013
This example should be helpful: http://matplotlib.org/examples/api/image_zcoord.html
BenFrantzDale commentedon Sep 30, 2013
Thanks. Given that someone has already thought of this enough to make that page, is there a reason it's not the default behavior? That is, if I made a pull request that made that the default behavior is there a blanket reason it wouldn't be accepted?
WeatherGod commentedon Sep 30, 2013
No blanket reason, I don't think. I just think no one has spent enough time
to gracefully implement it. I don't think that there is any philosophical
objections. The feature would have to work regardless of the type of image
(some images are specified strictly as rgb values obtained from reading an
image), and it shouldn't be thrown off by having multiple images in the
axes (should work with whatever is "on top").
tacaswell commentedon Sep 30, 2013
You also have to be aware of the use of
extentand all the subtleties it can introduce.pelson commentedon Oct 10, 2013
It is worth knowing about @joferkington's https://github.com/joferkington/mpldatacursor/
tacaswell commentedon Jan 17, 2014
Closing as won't fix as I think a general solution will be more complex that it is worth.