{"version":"1.0","type":"rich","title":"react first level drilldown map using zoom","description":"A choropleth map of India supports drill-down navigation by clicking a state to zoom into its district boundaries. Clicking a district returns the view to the national level. The React component uses `d3.geoMercator` and `d3.geoPath` to project TopoJSON features from two remote datasets (state and district boundaries), rendering them as SVG paths with `d3.zoom` and `d3.zoomIdentity` to animate the zoom transition to each clicked feature’s bounding box.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c668376cf7ab4ca583b6bcb2ee8137a7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}