{"version":"1.0","type":"rich","title":"Fork of Circles on a Map","description":"This map visualizes global population by country, with circle area proportional to 2018 population figures. Users can pan and zoom, and hovering over countries reveals detailed population data with a tooltip. The visualization uses D3 v5 with `d3.geoPath` and `geoNaturalEarth1` projection to render world boundaries from TopoJSON, while `d3.scaleSqrt` sizes the circles. Population data comes from a CSV file merged with the geometry. A size legend and color legend provide reference, and SVG rendering supports interactive zoom events.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/46b4103806054de8934cd99e9912f8da?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}