{"version":"1.0","type":"rich","title":"Points on a Map","description":"This visualization layers city population data onto a world map using a natural Earth projection. Semi-transparent green circles, sized with a square-root scale, represent each city’s population, with larger circles indicating more populous urban centers. The map includes geographic graticules, land masses, and country interiors rendered via `d3.geoNaturalEarth1` and `d3.geoPath`. The React app loads TopoJSON world-atlas data and CSV city coordinates through custom hooks, with map features styled distinctly in light grays.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/04814761e78648099dfa1f5c47e1a8e2?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}