{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"A world map displays cities with populations over 50,000 as semi-transparent teal circles sized by population using a square-root scale. The map renders via SVG with a natural Earth projection from d3.geoNaturalEarth1, with country boundaries, land masses, and graticules drawn using d3.geoPath. React manages the component state, fetching city data from a CSV via d3.csv and world topology from TopoJSON using d3.json, with the feature and mesh APIs extracting land and interior boundaries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a35b906750004c5f8020c43d52214b02?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}