{"version":"1.0","type":"rich","title":"Tree Test","description":"A hierarchical tree layout arranges data from a CSV file by a categorical column, with each leaf sized according to a rollup sum. The visualization shows the nested structure of the data2.csv dataset, grouping entries by activity and rendering the resulting hierarchy as a tree with curved links. The code uses d3.nest, d3.hierarchy, and d3.tree to compute the layout, and d3.linkHorizontal to generate the connecting paths.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/26fdad98d12a48e5aa8bb84682c229c8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}