{"version":"1.0","type":"rich","title":"San Francisco County Map","description":"This map shows the geographic boundaries of San Francisco County as an SVG-rendered chloropleth, with county shapes drawn from a TopoJSON source loaded via `d3.json`. The visualization uses `feature` from topojson to extract GeoJSON data and `d3.geoPath` with an `geoEqualEarth` projection to render each county outline as a path. The React-based component, `Marks.js`, maps over the GeoJSON features to generate the SVG paths, while the map initially displays a \"Loading...\" state until the asynchronous data fetch completes via `useEffect`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f0e697153ffe4cb28bcb5e334e5da448?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}