vega/altair

Declarative visualization library for Python observed · 2026-08-28

github.com/vega/altair · homepage · Python · BSD-3-Clause (permissive) observed · 2026-08-28

Health v2 · maintenance only

91/100

Activity 98
Release rhythm 78
Longevity 100

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.

gap_med: 45
age_days: 4001
days_rel: 71
days_push: 17
n_releases_24m: 6

Full methodology

Adoption not part of the score

10458 stars · 867 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Vega-Altair is a declarative statistical visualization library for Python built on the Vega-Lite JSON grammar. It lets users create interactive, publication-quality charts with concise, consistent code.

Use cases

create scatter plots and histograms from pandas dataframes
build interactive charts with linked selections and brushing
make statistical visualizations with minimal code in Python
embed charts in Jupyter notebooks or export to Vega-Lite JSON
explore datasets visually during data analysis

When to choose

you want declarative, grammar-of-graphics style plotting in Python
you need interactive charts with little boilerplate
you work in Jupyter or data-science notebooks
you want charts that compile to portable Vega-Lite JSON

When to avoid

you need pixel-level imperative control over rendering
you need extremely large datasets rendered server-side without aggregation
you require a non-web (native desktop) chart backend

Facets

library · maturity stable

data-visualization charts data-visualization data-science python cross-platform vega-lite declarative-visualization jupyter statistical-graphics plotting python

3 sources

readme: https://github.com/vega/altair · fetched 2026-08-28 · 2b3c7e99b010
homepage: https://altair-viz.github.io/ · fetched 2026-08-29 · 7133c99bedce
registry_pypi: https://pypi.org/pypi/altair/json · fetched 2026-08-29 · dd006bca76f1

Member repositories

Repository	Role	Health v2
vega/altair	main	91

For agents

markdown · JSON · MCP: product_card(name="vega/altair")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem