How to add points or markers to line chart using plotly express?

Question

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()

Asked By: zesla

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Source

Answer 1

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()

Answered By: vestland

Answer 2

As of Plotly version 5.2.1 this can now be achieved using the markers argument of px.line. I.e.

import plotly.express as px

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

Answered By: Mad

Answer 3

If there is a way to specify marker?
For example, using seaborn I could pass a list of symbols as a parameter and gets a specific marker for each line:
Using fig = sns.lineplot(data=data, markers=[",", "*", "X", "<", "^", "."])
I will receive this picture: enter image description here

Thank you for your answers!

Answered By: Andrey

How to add points or markers to line chart using plotly express?

Question:

Answers:

Update:

Previous answer for older versions: