{"version":"1.0","type":"rich","title":"Gist 954622","description":"This visualization maps a network of species occurrence records and their associated ecoregion polygons. It shows how occurrence sets cluster together through shared taxonomic and geographic references, using an interactive force-directed layout. The code relies on d3.forceSimulation to position nodes representing occurrence sets and polygons, while d3.geoPath renders the underlying geographic boundaries from the stored polygon data. Data is pulled from Google App Engine’s datastore models, including OccurrenceSet and OccurrencePolygon, with the visualization highlighting relationships between species names, sources, and ecoregion types.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-954622?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}