Grouped Bar Chart

This example shows a grouped bar chart.

Method syntax

import altair as alt
from vega_datasets import data

source = data.barley()

alt.Chart(source).mark_bar().encode(
    x='year:O',
    y='sum(yield):Q',
    color='year:N',
    column='site:N'
)

Attribute syntax

import altair as alt
from vega_datasets import data

source = data.barley()

alt.Chart(source).mark_bar().encode(
    x='year:O',
    y='sum(yield):Q',
    color='year:N',
    column='site:N'
)
# No channel encoding options are specified in this chart
# so the code is the same as for the method-based syntax.