{"version":"1.0","type":"rich","title":"CARTO Locations | Training","description":"This interactive map shows choropleth data for U.S. census tracts and counties, colored by the `acfosw_200` attribute. A readout overlay indicates that tract boundaries appear at zoom levels 0–12, while block-level data displays at zoom 12 and higher. The visualization uses Leaflet with the CARTO.js library, applying CartoCSS styles that switch between quantile-based color ramps and manual class breaks depending on zoom. Clicking a feature opens a popup revealing its GEOID and attribute value.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-37aa667f5d1b765f68b0d110271a82da?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}