{"version":"1.0","type":"rich","title":"Selecting a Year on a Line Chart","description":"This interactive line chart displays population over time for different world regions, with a vertical line marking the currently selected year. Users can hover anywhere on the chart to update the selection and the line position. Built with D3 v5, it uses `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` with `curveBasis`, plus `nest` for grouping data by region. The visualization renders as SVG and loads UN population estimates from CSV files, using `mouse` events to trigger selection updates.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/54cfb4654ea0479f8d44c6bfdf1f44ca?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}