{"version":"1.0","type":"rich","title":"A9 - Choropleth Map","description":"This example displays a choropleth map of population estimates by U.S. county, using a green sequential color scale to encode values from roughly 900 to 4 million. It loads GeoJSON county boundaries and a CSV dataset, then renders the map with `d3.geoPath` and an equirectangular projection. The map supports zooming and panning through `d3.zoom`, and each county includes a tooltip showing its name and population.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e7f204b322ad419fa771f01ea555b165?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}