{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map of world countries colored by economic group, with an interactive legend that filters the map to highlight countries matching a selected category. Users click legend items to toggle filtering, which dims all non-matching countries and slightly emphasizes the selected group. The visualization uses d3.geoNaturalEarth1 and d3.geoPath for map projection, d3.scaleOrdinal with d3.schemeSpectral for color encoding, and d3.zoom for pan/zoom. Data comes from the World Atlas TopoJSON and TSV files loaded via d3.tsv and d3.json.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b436e12348834b41884153d5ee5e67c6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}