{"version":"1.0","type":"rich","title":"Fork of Choropleth Map with Interactive Filtering","description":"A choropleth map of world economies lets users filter countries by clicking legend items, with unselected countries fading to low opacity. The map uses d3.geoPath with a geoNaturalEarth1 projection and a d3.scaleOrdinal color scale with the schemeSpectral palette, rendering as SVG. The color legend, built with custom enter/merge/exit logic, triggers updates via click handlers that toggle the selected category. Geographic data comes from world-atlas TopoJSON, paired with economic metadata from a TSV file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cff2c2c76aeb4fc99b5de06035e30bfb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}