Hover tool / Tap tool on image

Community Support
1

Hi,
is it possible to implement the Hover Tool or the tap tool on image in such a way that when I moving my mouse or pressing on the image pixels, I get information on the pixel below the mouse, like the pixel coordinates and pixel value.
I would be glad to get an example.
Thanks

Saar

2

Hi Saar,

Hit-testing on images is still an open feature request. If you have experience and would be interested in contributing, we'd be happy to help with any questions. Otherwise, please feel free to make a GH issue to request the feature (I don't think there is an issue for it yet).

Thanks,

Bryan

···

On Feb 21, 2016, at 3:51 PM, [email protected] wrote:

Hi,
is it possible to implement the Hover Tool or the tap tool on image in such a way that when I moving my mouse or pressing on the image pixels, I get information on the pixel below the mouse, like the pixel coordinates and pixel value.
I would be glad to get an example.
Thanks
Saar

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3

I’m pretty sure someon e’s
posted about this before with a workaround.

The idea is to add invisible glyphs (square markers, circles,
whatever) on the same plot and attach a hovertool to them.

</small>
···

On 2/21/16 2:11 PM, Bryan Van de Ven
wrote:


Hi Saar, Hit-testing on images is still an open feature request. If you have experience and would be interested in contributing, we'd be happy to help with any questions. Otherwise, please feel free to make a GH issue to request the feature (I don't think there is an issue for it yet).
Thanks,
Bryan



On Feb 21, 2016, at 3:51 PM, wrote:
Hi, is it possible to implement the Hover Tool or the tap tool on image in such a way that when I moving my mouse or pressing on the image pixels, I get information on the pixel below the mouse, like the pixel coordinates and pixel value.
I would be glad to get an example.
Thanks
Saar
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Sarah Bird
Developer, Bokeh

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[email protected][email protected]@continuum.iohttps://groups.google.com/a/continuum.io/d/msgid/bokeh/a9f27ce4-1e58-4e38-9888-21a5535f5f1f%40continuum.iohttps://groups.google.com/a/continuum.io/d/optout
4

You’re right. I think it’s this post.

···

Le samedi 5 mars 2016 00:19:37 UTC+1, Sarah Bird a écrit :

I’m pretty sure someon e’s
posted about this before with a workaround.