{"version":"1.0","type":"rich","title":"A9 Choropleth Map in D3","description":"This choropleth map visualizes poverty rates across U.S. counties, using a blue sequential color scale to encode the percentage of residents in poverty for 2021. County boundaries are rendered as SVG paths via `d3.geoPath()` from TopoJSON data, while color values are mapped from a CSV dataset joined by FIPS codes. The map includes a hover tooltip via SVG `<title>` elements, and missing data appears gray. It uses D3 v7, TopoJSON, and d3-legend for potential legend support.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6aa858d48cca42c98292f21ea4ac6502?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}