software version info
- Bokeh 1.4.0
- Python 3.7.5
- Tornado 6.0.3
- node.js 12.12.0
Description of expected behavior and the observed behavior
Arrow should change its length when updating its data via cds_arrow.data = dict(xS=[0], yS=[1], xE=[new], yE=[1]).
This worked in Bokeh version 1.0.2 (and Python 2.7).
Using cds_arrow.stream(dict(xS=[0], yS=[1], xE=[new], yE=[1]),rollover=1) the update works in both versions.
Complete, minimal, self-contained example code that reproduces the issue
from bokeh.plotting import figure
from bokeh.models import ColumnDataSource, Slider, Arrow, OpenHead
from bokeh.layouts import column
from bokeh.io import curdoc
cds_arrow = ColumnDataSource(dict(xS=[0], yS=[1], xE=[1], yE=[1]))
cds_line = ColumnDataSource(dict(x=[0,1], y=[3,3]))
def slider_callback_data(attr,old,new):
cds_arrow.data = dict(xS=[0], yS=[1], xE=[new], yE=[1])
cds_line.data = dict(x=[0,new], y=[3,3])
#print(cds_arrow.data) # data is updated but not plotted
def slider_callback_stream(attr,old,new):
cds_arrow.stream(dict(xS=[0], yS=[1], xE=[new], yE=[1]),rollover=1)
cds_line.stream(dict(x=[0,new], y=[3,3]),rollover=2)
slider_data = Slider(title="cds.data", value=1.0, start=0.0, end=5.0, step=0.1, width=400)
slider_data.on_change('value',slider_callback_data)
slider_stream = Slider(title="cds.stream", value=1.0, start=0.0, end=5.0, step=0.1, width=400)
slider_stream.on_change('value',slider_callback_stream)
figure_test = figure(title="Example Figure", x_range=(-1,6), y_range=(-0.5,4.5), height=300, width=400, tools="")
figure_test.line(x='x', y='y', source=cds_line)
arrow_glyph = Arrow(end=OpenHead(), x_start='xS', y_start='yS', x_end='xE', y_end='yE',source=cds_arrow)
figure_test.add_layout(arrow_glyph)
curdoc().add_root(column(figure_test, slider_data, slider_stream))Screenshots or screencasts of the bug in action
When moving the upper slider, only the line updates.
Moving the lower slider, both update correctly.
software version info
Description of expected behavior and the observed behavior
Arrow should change its length when updating its data via
cds_arrow.data = dict(xS=[0], yS=[1], xE=[new], yE=[1]).This worked in Bokeh version 1.0.2 (and Python 2.7).
Using
cds_arrow.stream(dict(xS=[0], yS=[1], xE=[new], yE=[1]),rollover=1)the update works in both versions.Complete, minimal, self-contained example code that reproduces the issue
Screenshots or screencasts of the bug in action
When moving the upper slider, only the line updates.
Moving the lower slider, both update correctly.