{"version":"1.0","type":"rich","title":"VI7 Node- link diagram","description":"This example visualizes U.S. state connectivity through a force-directed node-link diagram. Each circle represents a state, colored by its Census region (e.g., New England, South Atlantic, Mountain) using a categorical color scale, with 9 distinct groups. The graph uses D3's force layout with charge (-120) and link distance (30), causing states with fewer connections to drift more freely while highly connected states cluster together. Links show connections between states, with stroke width proportional to link value. Hovering over a node reveals its name via a tooltip. The dataset groups states into nine regions, with a notably higher number of states (DC, DE, FL, GA, MD, NC, SC, VA, WV) belonging to the South Atlantic region. The visualization is based on Mike Bostock's force-directed graph implementation, rendered as SVG, and uses D3 v3 with a categorical color scale to distinguish regional groups.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-13c5ec70f7840df9ce5c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}