{"version":"1.0","type":"rich","title":"United States Educational Attainment - Choropleth Map","description":"This choropleth map visualizes the percentage of adults aged 25 and older with a bachelor's degree or higher across U.S. counties, using data from the FreeCodeCamp education dataset. Counties are colored on a purple sequential scale, with gray indicating missing data. Built with React and D3 v5, the visualization uses `d3.geoPath` to render county boundaries from TopoJSON and `d3.scaleThreshold` to map education percentages to colors. A custom tooltip, implemented via global D3 selectors, displays county name, state, and value on hover, while a legend shows the threshold color scale.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ea77c59e1c264e7fb7c885fe7d2c7909?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}