Bash script to generate world map svgs, with a given grouping highlighted by color. Since this is for groupings and not detail, the script removes Antarctica, subs in French Guiana as a unit removed from France, and uses the map-units version of France.
We loop over uniques for properties: CONTINENT SUBREGION REGION_WB REGION_UN
GeoJSON sources via: natural-earth-vector
Clues and Facilities: Mike Bostock's command line cartography series. You'll need to install the nodejs packages including:
npm install -g d3-geo-projection