{"version":"1.0","type":"rich","title":"EdX Viewership 2013: Aggregating in App!","description":"This visualization maps EdX video viewership for HarvardX and MITx online courses in 2013, plotting circles sized by total video plays per country on a Mercator-projected world map. The circles, generated with d3.scaleSqrt and rendered as SVG paths via d3.geoPath, sit atop land and graticule layers from the World Atlas TopoJSON. Hovering reveals the country name and view count. The React app loads CSV data with d3.csv and aggregates counts by country using d3.bin and d3.sum.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c83a131a891b474984e488c36366d314?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}