Digital Geography

D3 Geodata Basics – A Map Overlay can have many Faces

Within that tutorial I will show you how to: add a geoJSON file using pure Leaflet open a geoJSON file with D3 open a TopoJSON file with D3 add a map-overlay to a leaflet map using D3 Again…we begin with a simple map … already seen in D3 mapping basics and in geoJSON & Leaflet Add a geoJSON file using pure Leaflet You should know how to do this! Just add some very simple data to the map, as we have already done it in a previous post! Import the data file… …add the data to the map… …define theā€¦