{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays a world map with circles sized and colored according to the number of cultural heritage objects associated with each country. The code uses `d3.geoMercator` for projection, `d3.geoPath` to render country boundaries, and `d3.scaleSqrt` for circle radii based on data from a SPARQL query. Hovering enlarges a circle and shows a tooltip with the country name and object count, while a dropdown filters by material category. A legend and zoom functionality are also included.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8df3a0ae802e423381c8d9d15157c1c4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}