{"version":"1.0","type":"rich","title":"Assignment2_Task7_Tree","description":"This animated tree diagram shows hierarchical geographic data, with continents branching into countries and cities. The visualization expands nodes progressively using D3’s `d3.layout.tree` and `d3.svg.diagonal` APIs, with each node’s position calculated by depth. Node colors derive from the dataset’s `fill` properties, while SVG circles and text labels update dynamically through node enter/update transitions. The code uses D3 version 3.5.17 to render the structure, with fixed-depth spacing and a 500-pixel-tall frame.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0988e91c60154816b57acb8137205678?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}