{"version":"1.0","type":"rich","title":"Region Filter","description":"This interactive treemap visualizes steel scrap trade values between the United States and its partner countries, filtered by import or export direction. Users can toggle between these flows and select a specific region, which aggregates data by partner country using d3.hierarchy from the CSV dataset. The visualization uses d3.treemap to layout cells, with a sequential color scale mapping value magnitude from lightblue to darkblue. Clicking a country cell drills down to reveal commodity-level details, while the reset button restores the aggregated country view.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cec584ef2fa543f9b308e832b18bc82f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}