{"version":"1.0","type":"rich","title":"Points on a map sized circles","description":"A world map displays cities as green circles sized by population using a square root scale. The example combines a Natural Earth projection with D3 v7’s `geoPath` and `geoGraticule` to render landmasses, borders, and graticules in SVG, while React manages component state and data loading. City coordinates and population values come from a CSV file, loaded via `d3.csv`, and the atlas topology is fetched from the world-atlas package. Circle radii range from zero to twenty pixels, with semi-transparent fill for overlap visibility.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a6fa6bd260964870bb8858d6a9853dab?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}