| see: http://bost.ocks.org/mike/map/ | |
| brew install gdal | |
| npm install -g topojson | |
| To generate continental US map: | |
| $ wget 'http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/50m/cultural/ne_50m_admin_1_states_provinces_lakes.zip' | |
| $ unzip ne_50m_admin_1_states_provinces_lakes.zip | |
| $ ogr2ogr -f GeoJSON -where "sr_adm0_a3 IN ('USA')" states.json ne_50m_admin_1_states_provinces_lakes.shp | |
| edit states.json to remove data for Hawaii and Alaska | |
| $ topojson states.json > topology.json | |