Vega is a declarative format for creating, saving, and sharing visualization designs.
With Vega, visualizations are described in JSON, and generate interactive views using either HTML5 Canvas or SVG.
Toolkits
new Vega 2.0
offers a full declarative visualization grammar, suitable for
expressive custom interactive visualization design and programmatic generation.
Systems
Lyra
is an interactive environment that enables custom visualization design.
Without writing any code, designers can create visualizations on-par with hand-coded D3 and Processing.
new PoleStar
is a web-based visualization specification interface, inspired by Tableau.
Analysts can rapidly generate visualizations as part of the
data exploration process.
3rd Party Integration
ggvis is a data visualization package for R that renders web-based visualizations using Vega. It features a syntax similar in spirit to ggplot2.
Vincent allows you to build Vega specifications in a Pythonic way. It performs type-checking to ensure your specifications are correct, and offers convenience methods that turn Python data structures into Vega specifications.
The MediaWiki Graph extension allows you to embed Vega visualizations on MediaWiki sites, including Wikipedia.
Cedar integrates Vega with the GeoServices from ArcGIS. It adds templated documents for reusable charts that programatically bind to new data sources.