{"version":"1.0","type":"rich","title":"1Question","description":"This example displays a world population choropleth map, coloring selected countries from a custom dataset by population using a blue color scale. The visualization is built with D3 v7 and TopoJSON, projecting geographic data with `d3.geoNaturalEarth1()`. Country polygons are rendered using `d3.geoPath()`, and a hover tooltip shows the country name and population. A quantized legend created with `d3.scaleQuantize()` and `d3.axisBottom()` maps the color range to population values.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1251ef8316bd453c8d1628b35ff75985?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}