[bokeh] Better precision for HoverTool tooltip

Community Support
1

Andrew,

You can do this with standard python formatting, e.g. in the Texas example replace the following code:

hover.tooltips = [
    ("Name", "@name"),
    ("Unemployment rate)", "@rate%"),
    ("(Long, Lat)", "($x, $y)"),
]
···

with:

hover.tooltips = [
(“Name”, “@name”),
(“Unemployment rate)”, “@rate{0.000000}%”),
(“(Long, Lat)”, “($x, $y)”),
]

If you’re not already aware of it, a good place to search for tips like this is the Bokeh forum here.

Regards,

Marcus.

On Wed, Jun 7, 2017 at 10:53 PM, Andrew Foltz-Morrison [email protected] wrote:

Right now the HoverTool only displays 3 decimal places of precision for float values.

(for these purposes, the default Texas example is illustrative)

http://bokeh.pydata.org/en/latest/docs/gallery/texas.html

It doesn’t seem like there’s a way using HTML to control the number of decimal places displayed, and I can’t find any examples of the functionality being extended to cover greater precision. Any help is much appreciated.

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2

Please also see the expanded formatting options in the upcoming release:

  http://bokeh.pydata.org/en/dev/docs/user_guide/tools.html#formatting-tooltip-fields

Note: That link goes to "dev" docs, until the next (imminent) release, you would need to install from source or install a "dev build" to get this new feature.

Thanks,

Bryan

···

On Jun 8, 2017, at 05:16, Marcus Donnelly <[email protected]> wrote:

Andrew,

You can do this with standard python formatting, e.g. in the Texas example replace the following code:

hover.tooltips = [

("Name", "@name"),

("Unemployment rate)", "@rate%"),

("(Long, Lat)", "($x, $y)"),
]
with:

hover.tooltips = [
    ("Name", "@name"),
    ("Unemployment rate)", "@rate{0.000000}%"),
    ("(Long, Lat)", "($x, $y)"),
]

If you're not already aware of it, a good place to search for tips like this is the Bokeh forum here.

Regards,
Marcus.

On Wed, Jun 7, 2017 at 10:53 PM, Andrew Foltz-Morrison <[email protected]> wrote:
Right now the HoverTool only displays 3 decimal places of precision for float values.

(for these purposes, the default Texas example is illustrative)

http://bokeh.pydata.org/en/latest/docs/gallery/texas.html

It doesn't seem like there's a way using HTML to control the number of decimal places displayed, and I can't find any examples of the functionality being extended to cover greater precision. Any help is much appreciated.

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