{"version":"1.0","type":"rich","title":"Making a Choropleth Map","description":"This choropleth map visualizes global HIV prevalence rates among adults aged 15-49 for the year 2017, using a yellow-to-red sequential color scale to encode the percentage of the population infected. The map renders country polygons via `d3.geoPath` with a `geoNaturalEarth1` projection, overlaid with graticules and interior boundaries. Missing data appears in gray. The visualization uses React for component structure, `useWorldAtlas`, `useData`, and `useCodes` hooks to load TopoJSON and CSV datasets, and `d3.scaleSequential` with `interpolateYlOrRd` to map values to colors.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e4c44d627a1e4e8897363b527f5f2a6d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}