Harvard X-MITx Viewership by Country
This example maps HarvardX-MITx course viewership by country for AY2013. A geoMercator projection with d3.geoPath renders the world map from World Atlas TopoJSON, while overlaid circles mark viewer locations using linear scales derived from the dataset. The visualization uses React to manage state and render SVG elements, with d3.json and d3.tsv loading the map topology and viewership data. Graticules, landmasses, and interiors are styled separately to distinguish geographic features from data points.
AI-generated descriptionThis shows HarvardX-MITx viewership for AY2013 by country. This is forked from Rachel Hahn's Map of Nuclear Explosions with Data.
The world map behind the points is a Mercator type map using the World Atlas TopoJSON.
The data for the Person-Course Dataset for HarvardX-MITx, AY2013 can be found here.