{"version":"1.0","type":"rich","title":"Assignment 9 Chloropleth Map","description":"This choropleth map visualizes the number of births in 2022 per county across the United States, using a green color scale to encode population data. The visualization loads CSV data from a GitHub repository and county geometry from the US-10m TopoJSON file, rendering with SVG paths via `d3.geoPath` and `topojson.feature`. Interactive tooltips display the county name and birth count on mouseover, while a `d3.legendColor` legend provides scale reference. The code relies on D3 v6, d3-legend, and topojson libraries to create the map.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c67be9609fbc43eb9d10b3e89e565efe?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}