如何使用 plotly express 向折线图添加点或标记?

问题描述

plotly.express 非常方便生成漂亮的交互式绘图.下面的代码生成按国家/地区着色的折线图.现在我需要在情节中添加点.有谁知道我如何向折线图添加点?

将 plotly.express 导入为 pxgapminder = px.data.gapminder().query("大陆=='大洋洲'")fig = px.line(gapminder, x="year", y="lifeExp", color='country')图.show()

解决方案

更新:

截至版本

代码:

将 plotly.express 导入为 pxgapminder = px.data.gapminder().query("continent=='Oceania'")fig = px.line(gapminder, x="year", y="lifeExp", color='country')fig.update_traces(mode='markers+lines')图.show()

plotly.express is very convenient to produce nice interactive plots. The code below generates a line chart colored by country. Now what I need is to add points to the plot. Does anyone know how I can add points to the line chart?

import plotly.express as px

gapminder = px.data.gapminder().query("continent=='Oceania'")
fig = px.line(gapminder, x="year", y="lifeExp", color='country')
fig.show()

解决方案

Update:

As of version 5.2.1 you can use markers=True in:

px.line(df, x='year', y='lifeExp', color='country', markers=True)

Previous answer for older versions:

Use fig.update_traces(mode='markers+lines')

Plot:

Code:

import plotly.express as px

gapminder = px.data.gapminder().query("continent=='Oceania'")
fig = px.line(gapminder, x="year", y="lifeExp", color='country')

fig.update_traces(mode='markers+lines')
fig.show()