What is Vega?
Vega is a tool for creating visualizations based on D3.js and JavaScript. For comparison, Vega is the D3.js equivalent to R’s ggplot2. While D3 visualizations require you to think of all of the possible aspects of the visualization, Vega allows for quick visualizations through data manipulation without needing to input all the little details that quickly become quite complicated. As with D3, Vega is creates a JSON visualization that is a representation of the data that is fed to it.