Line Chart with Point Markers

This chart shows a simple line chart with points marking each value.

Method syntax

import altair as alt
from vega_datasets import data

source = data.stocks()

alt.Chart(source).mark_line(point=True).encode(
    x='date:T',
    y='price:Q',
    color='symbol:N'
)

Attribute syntax

import altair as alt
from vega_datasets import data

source = data.stocks()

alt.Chart(source).mark_line(point=True).encode(
    x='date:T',
    y='price:Q',
    color='symbol:N'
)# No channel encoding options are specified in this chart
# so the code is the same as for the method-based syntax.