This example demonstrates a multi-layered D3 map visualization using a conic equal-area projection, combining graticules, country choropleths, US county choropleths, geohash cells, heat points, and a graph network overlaid on the same geographic canvas. It uses the HPCC Systems visualization library, with layers such as ChoroplethCountries, GeoHash, ChoroplethUSCounties, Heat, and Graph, all rendered via D3’s geographic path machinery. The data includes country weights, geohash counts, county values, heat coordinates, and graph nodes, each styled with distinct palettes and opacities to reveal spatial patterns. The map is interactive, centered at the equator with a zoom level of two.