{"version":"1.0","type":"rich","title":"A9- Choropleth Map","description":"A choropleth map displays the poverty rate for every county in the US for 2021, with counties colored on a sequential red scale. Hovering over a county reveals its name and poverty percentage via a tooltip. Built with React and D3 v7, the visualization uses `d3.geoPath` to render county and state boundaries from a TopoJSON file, while `d3.json` and `d3.csv` load geographic and poverty data. A legend, created with `d3.scaleLinear` and `d3.axisBottom`, maps the color scale to percentages.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7a6016960f514d25ab849af3d331ec94?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}