{"version":"1.0","type":"rich","title":"Courses Tree","description":"This example presents a course prerequisite tree as a static, pre-positioned node-link diagram. Users can click circular nodes to select courses, which highlights all related links and appends the course label to a sidebar list; clicking again deselects it. The visualization uses D3 v5, with an SVG renderer, vertical link paths via `d3.linkVertical`, explicit x/y coordinates per node, and CSS class-based styling for link highlighting. It uses a JSON data file containing nodes with levels and class attributes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0cbf70279dd04743b39a52699785ef36?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}