{"version":"1.0","type":"rich","title":"A9 Proportional Symbols","description":"This proportional symbols map displays transportation costs for each US state, with the circle size encoding the cost amount and the color indicating whether a state ranks in the top ten most expensive. Rendered as an SVG via D3 v7, the visualization uses the `d3.geoAlbers` projection for the contiguous states, with separate `d3.geoMercator` projections for Alaska and Hawaii. State cost data is loaded from a Gist CSV, and the `topojson.feature` API draws state boundaries while circles are positioned using the `projection` function.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1501c761d5fe4ce49d4b0d034c8f35e7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}