{"version":"1.0","type":"rich","title":"Fork of China City Basemap","description":"This example visualizes a basemap of Chinese cities, using a Mercator projection centered on China to render province and city boundaries as SVG paths. The map displays the geographic outlines in a muted blue with subtle black strokes. The code uses `d3.geoMercator`, `d3.geoPath`, and TopoJSON's `feature` method to convert TopoJSON data into GeoJSON for rendering. The basemap data is loaded remotely from a GitHub gist, and each feature is styled via a CSS class.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6c07c6985d2140908ee2152248aef727?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}