{"version":"1.0","type":"rich","title":"Untitled","description":"A hierarchical circle-packing visualization displays the distribution of militant organizations across ideological categories and time periods. The code uses D3.js to produce a packed circle layout, encoding each organization as a leaf node with a clipped text label, while internal nodes represent hierarchical groupings. Data is sourced from a JSON file with a nested structure. The visualization is rendered using D3’s `pack` layout, `d3.group`, and SVG elements, with circles colored by tree depth and a drop shadow filter applied for visual separation.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cc8f9014f5b2489e9ed4e99789f34fb8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}