{"version":"1.0","type":"rich","title":"Circle Packing","description":"This example visualizes hierarchical data as nested circles using a circle packing layout. The circles, sized by each node’s `value` and sorted by descending value, are filled with colors from the magma sequential scale. The chart uses the `d3.pack` and `d3.hierarchy` APIs to compute the layout, while `d3.scaleSequential` and `d3.interpolateMagma` handle color mapping. Rendered as SVG in a full-screen viewport, the code imports all required functions from the d3 library and applies a fixed 3-pixel padding between circles.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1d50923fb9f04dccb43f759225692be8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}