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Archived discussions · Captured October 28, 2026

Error bars on bar charts?

Community Support
EM1
EM1

Hey everybody,

Just wondering whether it’s possible to add error bars to bar charts? If not, what might the most logical place be to start a contribution, if nobody is already working on it?

Cheers,

Eric

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Bryan
Bryan

All of the "glyph methods" on bokeh.plotting.Figure (e.g. "circle", "line", "segment", etc.) were recently added to Chart as well. So I'd say it is possible to draw error bars (or anything, really) "by hand" using these glyph methods. I'd recommend starting with that for your immediate needs, and then once it is working, your code could be a useful starting point for a discussion around adding this as a convenient API feature somehow.

Thanks,

Bryan

···

On Aug 4, 2016, at 9:10 AM, EM <ericmajinglong@gmail.com> wrote:

Hey everybody,

Just wondering whether it's possible to add error bars to bar charts? If not, what might the most logical place be to start a contribution, if nobody is already working on it?

Cheers,
Eric

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EM1
EM1

Oh wow, this is amazing! Love it that glyph methods are added to charts. Gives a whole new world of flexibility.

I have written a bunch of working prototype of functions that can check the shape of error bars such that they are correctly provided like in matplotlib. Will share once I’ve tested it with a few cases!

···

On Thu, Aug 4, 2016 at 10:16 AM Bryan Van de Ven bryan@bokeh.org wrote:

All of the “glyph methods” on bokeh.plotting.Figure (e.g. “circle”, “line”, “segment”, etc.) were recently added to Chart as well. So I’d say it is possible to draw error bars (or anything, really) “by hand” using these glyph methods. I’d recommend starting with that for your immediate needs, and then once it is working, your code could be a useful starting point for a discussion around adding this as a convenient API feature somehow.

Thanks,

Bryan

On Aug 4, 2016, at 9:10 AM, EM ericmajinglong@gmail.com wrote:

Hey everybody,

Just wondering whether it’s possible to add error bars to bar charts? If not, what might the most logical place be to start a contribution, if nobody is already working on it?

Cheers,

Eric

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