{"version":"1.0","type":"rich","title":"Population time-series","description":"This example shows population trends over time for world regions, with each region drawn as a colored line against year and population axes. A color legend on the right identifies each region, and the lines are sorted by their final population values. The visualization uses React with D3 v5, including `d3.line`, `d3.nest`, `d3.scaleOrdinal`, and `d3.schemeCategory10` for styling. Data comes from UN population estimates CSV files, processed via a custom melt function, and rendered as animated SVG paths with transitions on the legend.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/32bb58021ac24d949cb6cc2bab6cba94?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}