{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"This example presents a choropleth map of world countries colored by economic classification, with an interactive legend that filters the map's display. Clicking a legend category highlights matching countries while dimming others; clicking again clears the filter. The visualization uses D3 v5's `geoNaturalEarth1` projection with `geoPath` for rendering, and `scaleOrdinal` with `schemeSpectral` for color mapping. Pan and zoom are enabled via `d3.zoom`. Geographic data comes from the World Atlas TopoJSON dataset, loaded and processed with `topojson.feature` and merged with TSV metadata.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/94c7be24a0684388bb97192e310af20f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}