Population of the countries of the world, encoded as circular areas as in the previous example. This time, countries are not depicted. Bubbles are placed onto a country's centroid, and the graticule is left to help locating faraway bubbles (e.g., the pacific islands) and give a sense of geographical displacement.
https://d3js.org/d3.v4.min.js
https://d3js.org/d3-selection-multi.v0.4.min.js
https://d3js.org/d3-geo-projection.v2.min.js
https://d3js.org/topojson.v2.min.js