带插值的折线图

此图表显示了路径经过插值的折线图。插值方法的完整列表可在文档中找到。

方法语法

import altair as alt
from vega_datasets import data

source = data.stocks()

alt.Chart(source).mark_line(interpolate="monotone").encode(
    x="date:T",
    y="price:Q",
    color="symbol:N"
)

属性语法

import altair as alt
from vega_datasets import data

source = data.stocks()

alt.Chart(source).mark_line(interpolate="monotone").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.