{"version":"1.0","type":"rich","title":"Fork of Selecting a Year on a Line Chart","description":"This interactive line chart displays population estimates and projections for world regions from 1950 to 2100, sourced from UN dataset CSVs. Users hover over the chart to move a vertical line selecting a specific year, which updates the visualization's focus. The d3.v5 code uses scales (`scaleTime`, `scaleLinear`), a line generator with `curveBasis`, and axes, while a custom color legend maps region names via `scaleOrdinal`. The SVG rendering includes blended stroke paths, an interactive mouse-interceptor rectangle, and a responsive update loop triggered by year selection.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cd12f0ec31fd4855ab4dfe10b0efa27c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}