{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map of world economies displays countries colored with an ordinal spectral scale. Users click a legend to filter the map, highlighting matching countries and dimming all others. Built with D3 v5, the map uses a natural Earth projection with `d3.geoPath` and `d3.geoNaturalEarth1`. Economic data comes from a TSV file loaded via `d3.tsv`, while country boundaries are processed from TopoJSON using the `topojson` library. The visualization supports zooming and panning via the `d3.zoom` API.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c8ef4f2cec6a4bc6ba2325b86b0d2dff?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}