{"version":"1.0","type":"rich","title":"Points On A Map IV","description":"This example displays a world map with cities plotted as semi-transparent circles, where the circle size encodes each city’s population using a d3.scaleSqrt. The map uses a d3.geoNaturalEarth1 projection and d3.geoPath to render landmasses, graticules, and country boundaries from world-atlas TopoJSON data. City coordinates and populations come from a Simplemaps CSV loaded via d3.csv. The visualization is built with React components, rendering SVG marks and styled with CSS classes for land, sphere, interiors, and graticules.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c3c4c210dd9246578369c251aa9383cb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}