{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map colors countries by economic classification, sourced from the World Atlas dataset and displayed using the Natural Earth projection. Clicking a color swatch in the legend filters the map, dimming all countries except those matching the selected category, while a highlighted stroke marks the active group. Built with D3 v6, it uses `d3.geoPath` for map geometry, `d3.scaleOrdinal` with the spectral scheme for color mapping, and `d3.zoom` for interactive panning and zooming. Hovering a country reveals its name and value via a tooltip.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/aa2253d38f6c47039153f8d2995238c0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}