{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map colors world countries by economic classification, using a spectral color scale to distinguish categories. Clicking a legend item filters the map to highlight only matching countries, while zooming and panning are enabled via d3.zoom. The visualization imports world-atlas TopoJSON and TSV data, projecting features with d3.geoNaturalEarth1 and d3.geoPath. Map and legend are rendered as SVG, with hover states and opacity dimming for non-selected regions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/90951b3a4b7a4b42ae8fc84e5b51e886?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}