This example shows a choropleth map of Palghar district blocks, using texture patterns to encode the percentage of stunted children. A slider filters the displayed range, and hovering over a block reveals its name and value in a tooltip. The visualization merges block-level GeoJSON with CSV data, then renders it using D3’s `geoMercator` projection and `geoPath`. Interactive brushing and zooming are enabled, with textures generated via the `textures` library to differentiate value bands, and transitions animate the fill changes.