Multiple vbar's hover alpha change only updated when hitting last vbar

Hi,

Trying to get change in fill alpha to work when plotting multiple vbar’s and using the hover. In the code below there are 3 vbar’s per category and the hover tool has been activated. For each vbar, hover_fill_color and hover_fill_alpha have been specified. However, when moving the hover across the bar’s the alpha is only changed when hitting the 2017 vbar, then all 3 vbar’s alpha is changed. Have I implemented the hover tool wrong?

Kind regards,

Jonas

···

from bokeh.core.properties import value

from bokeh.io import show, output_file

from bokeh.models import ColumnDataSource, HoverTool

from bokeh.plotting import figure

from bokeh.transform import dodge

output_file(“dodged_bars.html”)

fruits = [‘Apples’, ‘Pears’, ‘Nectarines’, ‘Plums’, ‘Grapes’, ‘Strawberries’]

years = [‘2015’, ‘2016’, ‘2017’]

data = {‘fruits’ : fruits,

‘2015’ : [2, 1, 4, 3, 2, 4],

‘2016’ : [5, 3, 3, 2, 4, 6],

‘2017’ : [3, 2, 4, 4, 5, 3]}

source = ColumnDataSource(data=data)

df = source.to_df()

p = figure(x_range=fruits, y_range=(0, 10), plot_height=250,

title=“Fruit Counts by Year”,

toolbar_location=None, tools="")

r_15=p.vbar(x=dodge(‘fruits’, -0.25, range=p.x_range), top=‘2015’,

width=0.2, source=source, color="#c9d9d3",

legend=value(“2015”), fill_alpha = 0.6, hover_alpha = 1,

hover_color = “#c9d9d3”)

r_16=p.vbar(x=dodge(‘fruits’, 0.0, range=p.x_range), top=‘2016’,

width=0.2, source=source, color="#718dbf",

legend=value(“2016”), fill_alpha = 0.6, hover_alpha = 1,

hover_color ="#718dbf")

r_17=p.vbar(x=dodge(‘fruits’, 0.25, range=p.x_range), top=‘2017’,

width=0.2, source=source, color="#e84d60",

legend=value(“2017”), fill_alpha = 0.6, hover_alpha = 1,

hover_color = “#e84d60”)

p.x_range.range_padding = 0.1

p.xgrid.grid_line_color = None

p.legend.location = “top_left”

p.legend.orientation = “horizontal”

p.add_tools(HoverTool(renderers = [r_15,r_16,r_17],tooltips= None))

show§