{"version":"1.0","type":"rich","title":"Circles on a Map","description":"A world map visualizes population by country via teal circles, with circle area scaled to 2018 population data. Pan and zoom are enabled through the `d3.zoom` behavior. Hovering a country reveals details, while a custom size legend displays the population scale. The visualization uses the `d3.geoNaturalEarth1` projection, `d3.geoPath` for rendering country borders, and `d3.scaleSqrt` for circle sizing. Data merges UN CSV statistics with world atlas TopoJSON, rendered as SVG with CSS styling for hover effects.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/14524fc7c5cb4bc89e2be0b32d943e96?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}