{"version":"1.0","type":"rich","title":"usa map","description":"This choropleth map shows the percentage of adults aged 25 and older with a bachelor's degree or higher across U.S. counties, using a sequential purple color scale. The visualization is built with React and D3 v5, projecting county boundaries via `d3.geoPath` from a TopoJSON file. County data is loaded from the U.S. Education Data JSON, with counties missing data rendered in gray. Hovering over a county triggers a tooltip displaying the county name and its percentage. A legend uses `d3.scaleThreshold` with a linear scale to map the color ranges.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/08a315070efa49b5bea2481bec524193?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}