{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays a world map with circles sized by population for cities exceeding 50,000 residents. It uses a natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath` to render landmasses, graticules, and interiors. City data is loaded from a CSV using `d3.csv`, with circle radii scaled by a square root scale (`d3.scaleSqrt`). The visualization is built with React and rendered as SVG, styled with soft teal, semi-transparent points.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/db1d051671c545028deb7cdd3e06ae29?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}