Also as a reference,
here’s a complete minimal example showing an
updating span based on a slider that was
posted on Stack Overflow the other day:
[http://stackoverflow.com/a/39235127/3406693](http://stackoverflow.com/a/39235127/3406693)
Thanks,
Bryan
> On Sep 4, 2016, at 11:26 PM, Sarah
Bird - Continuum <[email protected] >
wrote:
>
> Hi Angelo,
>
> Thanks for sharing.
>
> You're code's pretty long so it's too
much for me to debug.
>
> A couple of things though:
>
> 1) as soon as you change the metric
select dropdown it causes some kind of
pingponging so there’s a loop in your code
somewhere - this is what’s responsible for
the flashin axis I believe - although it’s
pretty strange and I don’t quite
understand it (You can see this by using
the chrome web developer tools and
selecting the websocket under the network
tab.
>
> 2) I don't see any annotation in the
code you sent so it’s hard for me to
comment, but I would suggest that you
shouldn’t be removing an annotation and
drawing a second one, but rather setting a
new x / y coordinate for your annotation.
>
> Sincerely,
>
> Sarah Bird
>
> On 9/3/16 7:12 PM, Angelo Fausti Neto
wrote:
>> Hi all,
>>
>> in my previous message I
mentioned an issue using annotations in a
bokeh app, here I provide more information
and a complete example to reproduce the
problem.
>>
>> The attached screenshot
illustrates what happens. If I change the
“Metric” select widget it draws the second
annotation, but I cannot remove the
previous one. Another problem is that the
plot start ‘blinking’.
>>
>> The app is here
>>
>> [https://github.com/lsst-sqre/qa-dashboard/blob/tickets/DM-7427/squash/dashboard/viz/metrics.py](https://github.com/lsst-sqre/qa-dashboard/blob/tickets/DM-7427/squash/dashboard/viz/metrics.py)
>>
>> see the methods
draw_spec_annotations() and
on_metric_change()
>>
>> use the following to run, it
requires
>>
>> bokeh==0.12.1
>> requests==2.9.1
>>
>> $ export SQUASH_API_URL=[https://squash.lsst.codes/dashboard/api/](https://squash.lsst.codes/dashboard/api/)
(this give you some data to feed the
plot)
>>
>> $ bokeh serve metrics.py
>>
>> If I could configure the
annotations using a data source then
perhaps changing the datasource would
update the plot correctly, but following
the documentation it seems not possible in
the current bokeh version.
>>
>> [http://bokeh.pydata.org/en/0.12.1/docs/reference/models/annotations.html#bokeh.models.annotations.Span](http://bokeh.pydata.org/en/0.12.1/docs/reference/models/annotations.html#bokeh.models.annotations.Span)
>>
>> any suggestions on how to do
that?
>>
>>
>> Angelo Fausti Neto
>> LIneA/LSST
>>
>>
>>
>> On Tue, Aug 30, 2016 at 1:28 PM,
Angelo Fausti Neto <[email protected] >
wrote:
>> Hi,
>>
>> I am trying to use span
annotations in a bokeh app to draw
threshold lines in a time series plot, I
have a select widget and would like to
change the value of the threshold when the
selection changes.
>>
>> I noticed that I cannot configure
a span annotation with a data source, so I
do:
>>
>> minimum = 1
>> threshold = Span(
location=minimum, dimension=‘width’
>> ,
>>
>> line_width=1, line_color='red'
>> ,
>>
>> line_dash='dotted'
>> ,)
>>
>>
>> self.plot.add_layout(threshold)
>>
>> then I change the selection and
it draws the new annotation but I don’t
know how to remove the previous one.
>>
>> what is the solution for that?
>>
>> Angelo Fausti Neto
>> LIneA/LSST
>>
>>
>>
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>> For more options, visit [https://groups.google.com/a/continuum.io/d/optout](https://groups.google.com/a/continuum.io/d/optout).
>
> --
> Sarah Bird
> Developer, Bokeh
>
>
>
>
