{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"A world map displays cities with populations over 50,000 as semitransparent circles, with circle size scaled proportionally to population using a square-root scale. The visualization renders geographic boundaries, graticules, and a sphere outline via `d3.geoNaturalEarth1`, `d3.geoPath`, and `d3.geoGraticule` within a React component using SVG. City population data comes from the Simplemaps World Cities Database, while country shapes derive from TopoJSON world-atlas data, processed with topojson’s `feature` and `mesh` functions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5079409f0e9f4392a6733348576d0fdd?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}