{"version":"1.0","type":"rich","title":"first level drilldown","description":"This example demonstrates a hierarchical drilldown of geographic data using the D3.js library, showing districts, projects, and beats in the Palghar region of India. Clicking on a district zooms into the selected area by fetching a new GeoJSON file and redrawing the map with the corresponding sub-regions. The visualization uses `d3.geoMercator` for map projection, `d3.geoPath` for rendering geometries, and `d3.zoom` to handle pan and zoom interactions. A \"back\" button resets the view to the full district map.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d58b2e57d2e64da7a669c30e015aea8e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}