{"version":"1.0","type":"rich","title":"Fork of Working Region Filter","description":"This interactive treemap visualizes US steel scrap trade data, showing the relative monetary value of imports and exports by partner country within a selected region. Users can filter the view by region and toggle between import and export flows. The visualization uses a hierarchical treemap layout, rendered as SVG, with color intensity reflecting magnitude. Built with D3 v7, the code leverages `d3.hierarchy` and `d3.treemap` to structure and compute rectangle positions, while `d3.scaleSequential` drives the color mapping. Clicking a country cell initiates a drill-down, suggesting further exploration of commodity-level details.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6a14c7cd54a44525a8b00474d5f285bf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}