{"version":"1.0","type":"rich","title":"Temperature in multiple cities","description":"This visualization displays population trends over time for multiple regions, with each region represented by a colored line. A vertical line marks the currently selected year, and hovering over the chart updates this selection. The view includes an ordinal color legend using `d3.scaleOrdinal` with `schemeCategory10`. Data is loaded via `d3.csv` from UN population estimates, processed through a custom melting function, and rendered using `d3.line` with `curveBasis` and SVG paths. Interactive mouse events trigger year selection.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d9120a5225ef412c98f34f8716d7856c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}