altair
Vega-Altair is a Python library for declarative statistical visualization.
About altair
Vega-Altair is a Python library for declarative statistical visualization built on the Vega-Lite JSON specification. It lets users define charts and interaction in Python code, including selections where one view filters another, such as a scatter plot filtering a histogram. It can display output in JupyterLab, Jupyter Notebook, Visual Studio Code, GitHub and nbviewer, and export to PNG/SVG images, standalone HTML pages, the Online Vega-Lite Editor, and JSON files. It is installed with pip or conda.
Key features
- Declarative Python API built on Vega-Lite JSON specification
- Type-checked visualizations conforming to Vega-Lite specification
- Declarative interaction grammar for selections and linked views
- Display in JupyterLab, Notebook, VS Code, GitHub, nbviewer
- Export to PNG/SVG, standalone HTML, and Online Vega-Lite Editor
- Serialize visualizations as JSON files
Best for: Python users who create statistical charts and interactive views in notebooks and code editors.
Good for
- Built on Vega-Lite specification with type-checked output
- Supports declarative interaction such as selections and linked views
- Displays in multiple notebook and editor environments with several export formats
altair at a glance
- Website
- github.com/altair-viz/altair
- Category
- Design & Creative › Charts & Data Visualization
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Charts & Data Visualization
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altair FAQ
How do I install Vega-Altair?
With pip using pip install altair, or with conda using conda install altair -c conda-forge.
Where can I ask questions or report issues?
Post questions on StackOverflow using the altair tag, and open a GitHub Issue for bugs and feature requests.
Is Vega-Altair affiliated with Altair Engineering, Inc.?
No. The open source project states it is not affiliated with Altair Engineering, Inc.
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