{"version":"1.0","type":"rich","title":"Selecting a year on a line chart","description":"This line chart shows population growth over time for multiple regions, with a vertical line marking a selected year. Users can move the mouse across the chart to select a different year, which updates the line’s position. The visualization uses D3 v5 to render SVG elements, including axes, line paths with a curve basis, and a color legend. Population data is sourced from UN estimates and medium-variant projections, processed from CSV files. The chart includes interactive mouse events and uses D3’s `scaleTime` and `scaleLinear` for axes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cc1b3a096a9a45089e8d5130543abf6d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}