{"version":"1.0","type":"rich","title":"Fork of Selecting a Year on a Line Chart Rogery","description":"A multi-line chart visualizes United Nations population estimates and projections from 1950 to 2100, grouped by world region with a color legend. A draggable vertical line marks a selected year, and moving the mouse over the chart updates that selection and re-renders the visualization. The code uses d3.csv, d3.nest, d3.scaleTime, d3.scaleLinear, d3.scaleOrdinal, d3.line with curveBasis, and d3.axisBottom/axisLeft, rendering SVG paths and circles.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/37db6d6dc37347eda0980f12e69b6442?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}