Altair is a declarative statistical visualization library for Python, based on the Vega and Vega-Lite visualization grammars. This project converts Altair charts to Matplotlib objects that can be modified using the Matplotlib API, rendered as publication-qualuty figures, and integrated with Matplotlib based tools, libraries, and dashboards.

Want to add docs? Features? Found a bug? Awesome!

Our style guide is matplotlib's and we use pytest for testing. Chat with us on gitter

Initial work on this project was supported by the John Hunter Matplotlib Summer Fellowship.