{"version":"1.0","type":"rich","title":"Point size","description":"A world map displays city populations as circles sized by a square-root scale. The visualization uses D3’s `geoNaturalEarth1` projection and `geoPath` for geographic features, with `scaleSqrt` mapping population values to circle radii. City coordinates come from a CSV, while land and country boundaries load from World Atlas TopoJSON. React handles component rendering, and D3’s `csv` and `json` fetch the data.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0a7e4131bf3e48c383611d9505985a07?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}