Philipp Plewa: D3.js (Data-Driven Documents) Java Library: Let's Make a Star Chart

D3 is a data visualization library (not a chart library like plotly.js or Vega-Lite).

D3 maintains a mapping between your data and graphic elements.

Can use SVG (Scalable Vector Graphics).  Or, canvas (raster-based, faster for many elements).

Examples: https://bl.ocks.org/
Editable examples: http://blockbuilder.org/

Good colours: http://colorbrewer2.org/

Star chart with subtle colour and twinkling: www.bit.ly/217O2C5