{"version":"1.0","type":"rich","title":"Circles on the Map","description":"This example displays a world map with countries colored according to their economic classification, using a categorical color scale with a legend rendered as circles. It loads world geometry from TopoJSON and metadata from TSV files, then projects the map with `d3.geoNaturalEarth1` and renders it as SVG paths via `d3.geoPath`. A `d3.zoom` behavior enables panning and zooming, while the color legend is built with a custom function that updates scales and ticks. The visualization uses `d3.scaleOrdinal` with the `schemeSpectral` palette and supports hover highlighting through CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/be876d71a3d34238858acb966be6c0bc?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}