{"version":"1.0","type":"rich","title":"TopoJSON","description":"This world map choropleth visualizes population density per km² by country, using a threshold color scale with breakpoints at 1, 10, 30, 50, and 100 people per square kilometer. Countries without matching data appear gray. The visualization renders with d3.geoPath and a Mercator projection fitted to a 960×520 SVG,","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c938421cbf5b4d729caee4aba73b513f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}