{"version":"1.0","type":"rich","title":"Fork of D3 Course Code Along - Choropleth Map","description":"This choropleth map visualizes world country income groups using a natural Earth projection, with color-coded paths representing each nation. Users can pan and zoom interactively, while a legend highlights the categorical color scale. The visualization loads TopoJSON country boundaries and TSV metadata via `Promise.all`, processes them with `d3.geoPath` and `geoNaturalEarth1`, and renders the legend with custom D3 selections and transitions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3c61b5e9bce34f218dda3ee29db8ebbf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}