{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays a world map with circles sized proportionally to city populations, using a square root scale to encode population values. The visualization renders geographic landmasses, graticules, and interiors via D3’s `geoNaturalEarth1` projection and `geoPath`, while city points are positioned with the same projection. Data comes from a Simplemaps CSV of cities with populations over 50,000, and country boundaries from TopoJSON’s world-atlas. React manages the component state, and SVG circles use a max radius of 15 pixels with a teal fill.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/14d5c6cd926742799bdf95f80012db41?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}