{"version":"1.0","type":"rich","title":"Persons of Concern StreamGraph by Origin","description":"This streamgraph shows the total number of persons of concern to UNHCR over time, grouped by country of origin, with each colored band representing a country. Using D3.js v4, it employs `d3.stack` with `d3.stackOffsetWiggle` and `d3.stackOrderInsideOut` to create the layered layout, and `d3.area` with `d3.curveBasis` for smoothed curves. Data from the UNHCR Population Statistics API is loaded via `d3.json`, and labels are positioned using the `d3-area-label` library. The visualization filters to countries with over one million total persons of concern and renders as an SVG.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1845d557971a4380b00c511780057b1b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}