{"version":"1.0","type":"rich","title":"Melting Data for Multiple Lines","description":"This visualization displays population growth over time for various regions, using multiple lines to compare trends across areas. The chart employs a nested data structure, processing population estimates from the UN’s medium variant dataset for 1950-2100. The code utilizes D3’s `nest` and `line` functions with the `curveBasis` for smooth lines, while `scaleTime` and `scaleLinear` handle the axes. A color legend generated via a custom `colorLegend` function helps distinguish regions, and the rendering uses SVG with a `mix-blend-mode` for overlapping lines.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/069a133b7ded4acc89064f199e2e9a28?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}