{"version":"1.0","type":"rich","title":"Fork of Let's make a map with D3.js!","description":"This choropleth map of Spain overlays bubble markers on each province to compare COVID-19 cases and vaccination rates. Circle size encodes case counts via `d3.scaleSqrt`, while fill color uses `d3.scaleSequential` with `d3.interpolateRdYlBu` for vaccination percentages. The map is rendered with `d3.geoMercator` and `d3.geoPath` from TopoJSON data, with interactive tooltips and legend components built from `d3.csv` data and custom SVG groups.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/77dc19b667594e80a86bf4f45874e0b5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}