{"version":"1.0","type":"rich","title":"Fixed projection for US States","description":"This example divides US states into four color-coded census regions—Northeast, Midwest, South, and West—drawn as fixed geographic projections. It uses D3 v5 with `d3.json`, `d3.geoPath`, and the `topojson` library to merge state geometries from the us-10m.v1 TopoJSON dataset. Each region is rendered as a separate SVG path with distinct fill colors defined in CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0a0d8a12bd3a4ca980a910cdd17be9d3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}