{"version":"1.0","type":"rich","title":"Choropleth map","description":"This example displays a choropleth map of the world, coloring each country according to its income group using a categorical color scale. The visualization loads geographic data from the World Atlas TopoJSON and TSV files, projecting it with `d3.geoNaturalEarth1` and rendering paths via `d3.geoPath`. A custom legend component uses D3 selections to show color categories. The map supports zoom and pan through `d3.zoom`, and hovering over a country highlights it in red while a tooltip reveals its name and income group.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fc29514b09844921acd38468ae78d24c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}