{"version":"1.0","type":"rich","title":"Map","description":"This visualization is a world population density map where each country is colored according to its inhabitants per square kilometer, using a sequential color scale from light blue (sparse) to red (dense). It displays a legend and tooltips on hover, allowing users to inspect individual countries. Built with D3 v7, the map uses `d3.geoNaturalEarth1` and `d3.geoPath` to render geographic boundaries from TopoJSON data, while population statistics are parsed from a TSV file and aggregated with `d3.rollup` and `d3.sum`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e10abae2910843d9b34c3ad9015ca490?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}