{"version":"1.0","type":"rich","title":"Choropleth map","description":"This choropleth map colors countries by income group, with a hover effect that highlights each nation and a legend displaying the categorical color scale. Built with React, it uses D3 v5 APIs including `geoNaturalEarth1` for projection, `geoPath` for rendering country boundaries, and `scaleOrdinal` with `schemeSpectral` for color mapping. World shape data comes from the world-atlas TopoJSON dataset, and the view supports zooming through `d3.zoom`. The legend is generated by the custom `colorLegend` module.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/36174223596249e888f7828d9f745401?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}