{"version":"1.0","type":"rich","title":"Map drill down","description":"This example demonstrates a drill-down choropleth map of Palghar district blocks, colored by data values from an external CSV. It shows a tooltip on hover and supports pan/zoom interaction. Built with D3 v5, it uses `d3.geoMercator`, `d3.geoPath`, and `d3.zoom` to render and manipulate SVG paths from GeoJSON data, while `d3.csv` and `d3.json` merge the dataset with geographic boundaries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fba74a5ac80a4f7680b9099398fd88d1?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}