{"version":"1.0","type":"rich","title":"D3 Choropleth Map - interactable","description":"This interactive choropleth map visualizes world economies using a color-coded legend. Users can click legend items to highlight countries matching the selected economic category, with non-matching countries dimmed to 20% opacity. The map uses D3 v7 with d3.geoNaturalEarth1 projection, d3.geoPath for SVG rendering, and d3-scaleOrdinal with d3.schemeSpectral. Data comes from World Atlas TopoJSON and TSV files, with the legend built through reusable functions that manage unidirectional data flow and zoom support.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/04a3d4d473df4f0d85b3b0ea526622fb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}