{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example visualizes global cities with populations above 50,000, using a square-root size scale to encode population magnitude as circle radius on an equirectangular projection. The map renders with a light-styled sphere, graticules, and country boundaries, with semi-transparent teal circles overlaid at city coordinates. Built with React, the visualization uses D3's `geoNaturalEarth1` projection, `geoPath` for map geometries, and `geoGraticule` for the grid. Country shapes come from the World Atlas TopoJSON, while city data is loaded via D3's `csv` parser from Simplemaps' public dataset.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cb8bc186095142fd85a90f7300993dc7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}