{"version":"1.0","type":"rich","title":"Fork of D3.js collapsible tree with boxes","description":"This example presents a collapsible tree visualization where each node is a labeled box, colored by type, and connected by curved links with arrows. The tree expands and collapses nodes with animated transitions. It uses the D3.js v3 layout `d3.layout.tree` and applies a breadth-first traversal to size the SVG canvas dynamically, color nodes, and resolve collisions. Pan and zoom are enabled via `d3.behavior.zoom`, and custom tooltips appear on hover. The data comes from a JSON file with nested node objects.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/508d2b991dae4bc199520a09a45bbee8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}