{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"This choropleth map displays world countries colored by income group, with an interactive legend that filters the map when a color swatch is clicked. Hovering over a country reveals its name and value. The map renders geographic boundaries using `d3.geoPath` with a `geoNaturalEarth1` projection, while the legend is built from `scaleOrdinal` and `schemeSpectral`. Clicking a legend item sets a `selectedColorValue`, which adjusts country opacity and highlights matching regions, and also dims the sphere and non-matching legend entries. Country data comes from the world-atlas TopoJSON and TSV files.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d72c42766bf54de2bed301c7f2345a14?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}