{"version":"1.0","type":"rich","title":"D3 test","description":"This example visualizes a historical route from a GeoJSON file, displaying daily segments as dashed black polylines over a light blue graticule-filled map. The code uses D3 v5 with an SVG rendering approach and a Mercator projection configured via `d3.geoMercator()`. It loads coastline and route data with `d3.json()`, then binds the features to SVG paths using `d3.geoPath()`. The graticule is generated with `d3.geoGraticule()`. The visualization clearly shows the path’s progression across the mapped region, with each day’s travel distinguished by styling properties like stroke dasharray.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}