{"version":"1.0","type":"rich","title":"Melting Data for Multiple Lines","description":"Animated bar chart of historical and projected world population from 1950 to 2100, based on UN estimates. The chart displays bars for multiple regions, with a horizontal line marking the selected region’s population; hovering over a bar highlights it, dims others, and reveals percentage differences relative to the selected region. Built with D3 v5 using `d3.scaleBand`, `d3.scaleLinear`, `d3.axisBottom`, `d3.axisLeft`, and `d3.select` for SVG rendering. Data is melted from two CSV files via a custom `melt` function, loading UN population estimates and medium variant projections.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/63622d57d817495b95e6c6db554f1c1b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}