{"version":"1.0","type":"rich","title":"Merging States","description":"A choropleth of U.S. states highlights a selected subset in orange while the remaining states appear gray with white interior boundaries. The example demonstrates `topojson.merge`, which combines multiple polygon geometries into one unified path, removing shared borders between selected states. It uses D3 v3 with `d3.geo.albersUsa` projection, `d3.geo.path` for rendering, and TopoJSON to load the U.S. state data. The selected states are chosen by a hardcoded set of state IDs, and the merged result is drawn as a single SVG path.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-1482afbca45b883d28d1da4168d57766?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}