{"version":"1.0","type":"rich","title":"DV2_6.2_Regional Map","description":"This example displays a choropleth-style regional map of Swedish counties, rendered as an SVG using React and D3 v5. It shows the geographic boundaries of each county filled with a teal color, while interior borders are highlighted with a lighter stroke. The code loads TopoJSON data from a GitHub gist, converts it to GeoJSON using `topojson.feature` and `topojson.mesh`, and projects it with `d3.geoMercator` fitted to the viewport via `projection.fitExtent`. Paths are drawn using the `d3.geoPath` generator.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/05eae9de522c4cd3a39f4c0950a5c936?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}