{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map displays global population estimates for 2018, with countries colored in a blue scale on an orthographic projection of the world. The visualization uses `d3.geoOrthographic` to project countries and `d3.geoPath` to render their shapes, while a `d3.scaleSqrt` encodes population counts as circle radii for select countries. Data comes from the UN population estimates CSV and a world TopoJSON, processed with `topojson.feature`. Interactivity includes zooming via `d3.zoom` and a color legend, rendered as SVG.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/13c9d0c723f3444f9f97953cfbe65ac9?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}