As one of the creators put it, easy tools for creating data visualizations (Excel, Tableau) aren’t always very expressive. Tools like D3 are very expressive — but you have to write lots and lots of code. It’s hard.
Enter Lyra. Lyra puts a GUI on top of D3, and when you’re done, generates the code. It also puts out a flat JSON file in a format known as Vega. The cool thing about that? Vega is highly reusable. You can reuse a visualization simply by feeding it a different dataset. Cool.
Lyra: An Interactive Data Visualization Tool