{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays cities with populations exceeding 50,000 as sized points on a world map, using the natural Earth projection. Country boundaries and graticules appear beneath the points. The visualization uses React with D3 v5, including `geoNaturalEarth1`, `geoPath`, and `geoGraticule`. City population data is loaded from a CSV via `d3.csv`, while land and interior boundaries come from World Atlas TopoJSON, processed with `topojson.feature` and `topojson.mesh`. Circle radii are scaled by population values.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7b1ae995f38c48b58e8aab5fbe62288d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}