{"version":"1.0","type":"rich","title":"Points on a Map","description":"This visualization displays a world map with circles representing the populations of cities, scaled using a square root scale from D3. The map, rendered as SVG in a React app, uses the D3 `geoNaturalEarth1` projection to place points. Geographic data comes from the world-atlas TopoJSON via `topojson.feature` and `topojson.mesh`, while city data loads from a CSV. The graticule, sphere, and land outlines are styled via CSS, and the semi-transparent teal circles have opacity set to 0.3.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e19f093c301248b3aa0053c0b2753777?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}