{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map displays global income groups, coloring each country through a categorical `scaleOrdinal` with the `schemeSpectral` range. Users click legend items to filter the map, highlighting matching countries while dimming others and the sphere backdrop. The map renders via `geoNaturalEarth1`, `geoPath`, and `zoom` interactions, while the legend uses click handlers and opacity toggling. Data comes from TopoJSON world-atlas and TSV files loaded through `d3.json` and `d3.tsv`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/851be23356504d06953318893f97e8c4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}