{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map colors countries by economic classification using D3's `geoNaturalEarth1` projection and `geoPath`, with an ordinal color scale from `schemeSpectral`. Clicking a legend item filters the map by highlighting matching countries and dimming others, while the sphere fades to emphasize the selection. The visualization loads country boundaries from TopoJSON world-atlas data and supports pan and zoom via `d3.zoom`, with tooltips showing country names and values.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fbe6305b155c47c5b11c8e02fc512c33?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}