{"version":"1.0","type":"rich","title":"Fork of Melting Data for Multiple Lines","description":"This chart displays population over time by region, using multiple smoothed lines to compare trends from 1950 to 2100. The code uses d3.csv to load UN population estimates and a medium variant projection, then d3.nest to group data by region and d3.line with curveBasis to generate the paths. Axes are rendered with axisBottom and axisLeft, while a custom colorLegend function handles the categorical color scale. The visualization is drawn as an SVG with a title and axis labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6175275cff12488aa196f91c85be4b55?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}