{"version":"1.0","type":"rich","title":"Choropleth Map of County Data","description":"A choropleth map shades U.S. counties by poverty rate, with a color legend and state boundaries overlaid. The visualization loads GeoJSON topology and CSV data via promises, then uses `d3.geoPath` and TopoJSON to render county shapes, while `d3.scaleThreshold` and `d3.schemeGreens` map poverty percentages to fill colors. County paths include tooltips showing the exact rate, and an axis below the map labels the legend’s tick values.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/87e7e6242ce54d2ab3023d0a0c9475e3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}