{"version":"1.0","type":"rich","title":"World Map Visualization","description":"This visualization presents a choropleth world map where each country’s fill color encodes its population size, using a blue quantized color scale from `d3.scaleQuantize` with `d3.schemeBlues[5]`. The map is rendered as SVG paths via `d3.geoPath` with the Natural Earth projection, using GeoJSON country boundaries from a remote URL. Population data is loaded from a CSV file and matched to countries by name, with missing or unmatched areas colored black.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2d50966464dd4d52bef5bfb64dd61c1c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}