Fork of Persons of Concern StreamGraph by Origin
A streamgraph visualizes the total number of persons of concern per year, grouped by country of origin, using UNHCR data. It shows stacked, colored streams for countries with over one million total persons, with labels positioned by d3-area-label. The code uses d3.stack with stackOffsetWiggle and stackOrderInsideOut, d3.scaleTime, and d3.scaleOrdinal with schemeCategory10. Values are interpolated across years via d3.bisector. Hovering over paths turns them black.