{"version":"1.0","type":"rich","title":"Sized Points on a Map - Episode 37","description":"This example displays world cities as circles on a natural Earth projection, with each circle's radius proportional to the city's population using a square-root scale. The visualization renders a land and graticule backdrop using D3's geoPath and geoNaturalEarth1, and overlays the sized points as SVG circles. City data is loaded from a CSV URL, while world map geometry comes from the world-atlas TopoJSON. The React application uses D3's `csv`, `json`, `feature`, and `mesh` functions to prepare and project the data.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/36070c02fc0e4ad2a72f62399dab953c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}