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Vega-Altair

A Vega-Lite-based visualization library for building statistical graphics declaratively from Python.

Vega-Altair is a Python library for creating statistical visualizations declaratively. By combining data, encodings, marks, transforms, and interactions, you can build Vega-Lite-based charts with concise code.

It supports not only basic charts such as scatter plots, bar charts, and line charts, but also facets, aggregation, filtering, selections, and tooltips through a consistent grammar. It is a practical way to learn reproducible visualization specifications while doing data analysis in Python.

Licensed under CC BY-NC-SA 4.0
Last updated on Jun 15, 2026 10:20 +0900