{"version":"1.0","type":"rich","title":"EdX Viewing Patterns by Country, 2013","description":"A world map using a Mercator projection displays circles sized by total video views for HarvardX and MITx online courses in 2013. The visualization uses d3.geoPath for rendering land and graticules, while circles are positioned by longitude and latitude and scaled with d3.scaleSqrt. Hovering reveals country and view counts. A dropdown menu filters between total views and individual courses, although the filtering logic is not connected. Data comes from a CSV dataset of course-person viewer locations.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/31adb8db3021424ab4dc9505c811367d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}