{"version":"1.0","type":"rich","title":"Simple Circle Pack (d3 v4; CSV; 50 Lines)","description":"This example demonstrates a circle packing visualization that encodes hierarchical data as nested circles, where the area of each circle represents a numeric size value. The visualization shows a dataset of car acquisition and trading history, with parent-child relationships defined by the CSV structure. The implementation uses d3.v4's `d3.stratify` to process the tabular data, `d3.hierarchy` with a size summation function to compute the tree structure, and `d3.pack` to generate the circle layout. Circles are rendered as SVG elements with white strokes and semi-transparent blue fills.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e6e17f5995c247e98b68d9b282a5955e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}