nested (original) (raw)

A grouped bar chart using plain Python lists. This example demonstrates creating a FactorRange with nested categories.

Details

Bokeh APIs:

More info:

Keywords:

bars, categorical, grouped

from bokeh.models import ColumnDataSource, FactorRange from bokeh.plotting import figure, show

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]}

this creates [ ("Apples", "2015"), ("Apples", "2016"), ("Apples", "2017"), ("Pears", "2015), ... ]

x = [ (fruit, year) for fruit in fruits for year in years ] counts = sum(zip(data['2015'], data['2016'], data['2017']), ()) # like an hstack

source = ColumnDataSource(data=dict(x=x, counts=counts))

p = figure(x_range=FactorRange(*x), height=350, title="Fruit Counts by Year", toolbar_location=None, tools="")

p.vbar(x='x', top='counts', width=0.9, source=source)

p.y_range.start = 0 p.x_range.range_padding = 0.1 p.xaxis.major_label_orientation = 1 p.xgrid.grid_line_color = None

show(p)