{"version":"1.0","type":"rich","title":"choropleth map","description":"This choropleth map shows global economic classifications by country, with a color legend that supports interactive highlighting. Using D3 v5 and topojson, it renders GeoJSON features through `d3.geoNaturalEarth1` and `d3.geoPath` onto an SVG, while a `scaleOrdinal` maps the discrete economy values to a `schemeSpectral` palette. Clicking a legend entry filters the map via opacity changes. The map fetches world-atlas TopoJSON and TSV data, with hover and zoom enabled through D3’s zoom behavior.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/196fd1cc3ee1433886bf73e064da3420?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}