{"version":"1.0","type":"rich","title":"MULTILINE MELTED","description":"This visualization shows population change over time as a set of semitransparent, overlapping lines, with each line representing a different region and a color legend on the right. The data comes from a CSV file containing UN population estimates and projections, melted into a tidy format before rendering. Built with D3 v5, the code uses `d3.nest()` to group data by region, `d3.line()` with `curveBasis` for smooth paths, and `d3.scaleOrdinal` with `schemeCategory10` for colors. The chart is rendered as SVG with axes, gridlines, and a custom color legend component.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d105d1fa299d49bcbd1afd1f95c728f7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}