{"version":"1.0","type":"rich","title":"D3 Test","description":"This example shows a directed graph of university courses, with nodes representing courses and links indicating prerequisites. Users can drag nodes to reposition them; double-clicking a node releases it from its fixed position, while dragging fixes it in place. The visualization uses D3 v3’s `d3.layout.force` for physics-based layout, with `d3.json` loading the course data from `graph.json`. Node and link positions are updated during the force simulation’s `tick` event, although the tick handler itself is left unimplemented, so nodes remain static initially. Rendering is done via SVG elements styled with CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/84d024b2af674026b26d7426cf8a0e6b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}