{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map displays countries colored by their economy category, with an interactive color legend for filtering. Clicking a legend category highlights only matching countries in full color while dimming others. The visualization uses d3.scaleOrdinal with schemeSpectral for color encoding and d3-geo projections for rendering SVG paths from TopoJSON world data. The legend implements click handling and opacity filtering, while hover states change country fill colors.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e190073efbe34f83b1ce43d0f04ca984?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}