{"version":"1.0","type":"rich","title":"D3 Course Code Along - Choropleth Map","description":"This choropleth map displays world countries colored by income group, with a legend showing the ordinal color scale. Built with D3 v5, it uses `d3.geoMercator` for projection, `d3.geoPath` to render geographic features from TopoJSON world-atlas data, and `d3.scaleOrdinal` with `schemeReds` for color encoding. Interactive zooming is enabled via `d3.zoom`. A custom color legend with animated circles transitions updates smoothly, and hover effects highlight individual countries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f3757bd84504403e8d2c6ccbd0a5af06?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}