D3.js exercises

D3 (from d.d.d. : data driven document) is a Java Script library focused in data visualziation, created and developed by Mike Bostock and others. https://en.wikipedia.org/wiki/D3.js This is the d3 homepage: https://d3js.org/ There is a portal for d3 exercises, Observable, where you can do graphics in d3, browser-based: https://observablehq.com/ Usualy each graphic has already its own template, like shown in this page, although in previous versions of the library https://d3-graph-gallery.com/ Among the places rthat work with d3 are Flourish and RawGraph: https://flourish.studio/, https://www.rawgraphs.io/ Here you will find a set of bilerplate files made with ChatGPT.