{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays a Natural Earth projection world map with semi-transparent red circles sized by population for cities exceeding 50,000 residents. The visualization uses React for component structure and D3 v5 APIs including `d3.geoNaturalEarth1`, `d3.geoPath`, and `d3.geoGraticule` for map rendering, plus a square root scale for circle sizing. City data comes from the Simplemaps World Cities Database, while country boundaries use the World Atlas TopoJSON dataset. The map shows graticules and styled land masses with interactive hover states on country boundaries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/75517f4efc914984ba3f1ea7acce1c62?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}