{"version":"1.0","type":"rich","title":"Quantity added to the visuals and","description":"This interactive treemap visualizes steel scrap import and export quantities by partner country for a selected region, with each rectangle sized by trade value and colored on a light-to-dark blue scale. Users filter by region and import/export direction via dropdown and radio buttons, and clicking a country drills down to show commodity-level details. Built with D3 v7, it uses `d3.hierarchy` for data nesting, `d3.scaleSequential` with `interpolateRgb` for color, and SVG elements with `.exit()` and `.enter()` patterns for updates. The tooltip reveals both monetary value and shipment quantity.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/af7f4e7817b74f1e842dfd2b062d229a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}