{"version":"1.0","type":"rich","title":"TopoJSON - Rajan ","description":"A world map choropleth visualizes population estimates by country, with countries colored on a blue sequential scale, while nations lacking data appear in gray. The example loads country boundaries from TopoJSON via the `topojson-client` library and renders them with `d3.geoPath` in an SVG, applying a Mercator projection. Interactive tooltips display each country’s population value on mouse hover. The color mapping is derived from a `d3.scaleQuantize` scheme, and the map includes a graticule overlay for reference.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f4ba76540be4433a900f06d1264276c2?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}