{"version":"1.0","type":"rich","title":"Sophie's version: Aggregation by Country using Excel","description":"This example visualizes the total video views for HarvardX and MITx online courses in 2013, aggregated by country and shown as circles on a world map. Circle size encodes view count, and hovering reveals the country and number of views. The map uses a Mercator projection built with D3’s `geoMercator`, `geoPath`, and `geoGraticule`, layered with land and interior boundaries from the World Atlas TopoJSON. Data is loaded from a remote CSV via D3’s `csv` function, and the circles are positioned using the projection, with their radius scaled by `scaleSqrt` in SVG.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9b50c7246a8848e2a034f3bbcc37863b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}