I am playing with the categorical data handling with Pandas example in the following link. ( Handling categorical data — Bokeh 2.4.1 Documentation.
I am trying to add a label on top of each bar showing the bar value but when I run the code there’s no label. No errors occur, code runs fine and shows me the bar chart but it has no labels. I’ve tried playing with the offset thinking it could be a layer issue to no avail. Near as I can tell no labels are being added to the chart at all.
I’m thinking I must just be missing something simple but any help would be appreciated.
from bokeh.io import output_file, show from bokeh.models import ColumnDataSource, LabelSet from bokeh.palettes import Spectral5 from bokeh.plotting import figure from bokeh.sampledata.autompg import autompg as df from bokeh.transform import factor_cmap output_file("groupby.html") df.cyl = df.cyl.astype(str) group = df.groupby('cyl') source = ColumnDataSource(group) cyl_cmap = factor_cmap('cyl', palette=Spectral5, factors=sorted(df.cyl.unique())) p = figure(height=350, x_range=group, title="MPG by # cylinders", toolbar_location=None, tools="") labels = LabelSet(x='cyl', y='mpg_mean', text='@mpg_mean', x_offset=50, y_offset=-10, source=source, render_mode='canvas') p.vbar(x='cyl', top='mpg_mean', width=1, source=source, line_color=cyl_cmap, fill_color=cyl_cmap) p.y_range.start = 0 p.xgrid.grid_line_color = None p.xaxis.axis_label = "some stuff" p.xaxis.major_label_orientation = 1.2 p.outline_line_color = None show(p)