{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map colors countries by economic category using an ordinal color scale derived from d3.scaleOrdinal and d3.schemeSpectral. Clicking a legend item filters the map, reducing the opacity of non-matching countries and highlighting the selected category. The map uses d3.geoNaturalEarth1 and d3.geoPath to render world features from TopoJSON data, while d3.zoom enables panning and zooming on the SVG. Hovering a country turns it red via CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7eecbc08b7d64662917450f0619081bc?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}