{"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. Users can hover over the chart to select a specific year, which draws a vertical black line and updates the selected year used for sorting the color-coded legend. The visualization uses d3.line with curveBasis for smoothed paths, d3.scaleTime and d3.scaleLinear for axes, and a d3.mouse event handler to trigger year selection. Data comes from UN population estimates loaded via d3.csv.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e543db8e9fdd44a9bd3401dda6eadca4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}