{"version":"1.0","type":"rich","title":"Proportional Symbols Map - Expensive States","description":"This proportional symbols map displays each U.S. state’s cost-of-living index, with circle size scaled to the numeric index and colored uniformly in blue. It uses D3.js 7.8.5 to load GeoJSON state boundaries, project them with `d3.geoAlbersUsa()`, and render the map as SVG paths via `d3.geoPath()`. A separate GeoJSON file of state centroids feeds the proportional symbols. A legend with four circles communicates the radius-to-value mapping. The visualization emphasizes differences in regional expense, highlighting states like Hawaii and California as the most costly.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/220b14a95d0d47f084798cbafcaf864a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}