多特征散点图

此示例演示如何使用多个特征编码制作散点图。

Method syntax

import altair as alt
from vega_datasets import data

source = data.iris()

alt.Chart(source).mark_circle().encode(
    alt.X('sepalLength').scale(zero=False),
    alt.Y('sepalWidth').scale(zero=False, padding=1),
    color='species',
    size='petalWidth'
)

Attribute syntax

import altair as alt
from vega_datasets import data

source = data.iris()

alt.Chart(source).mark_circle().encode(
    alt.X('sepalLength', scale=alt.Scale(zero=False)),
    alt.Y('sepalWidth', scale=alt.Scale(zero=False, padding=1)),
    color='species',
    size='petalWidth'
)