{"version":"1.0","type":"rich","title":"Selecting a Year on a Line","description":"This line chart visualizes global population trends by region from 1950 to 2100 using UN population data. A black vertical line marks the currently selected year, and hovering over the chart updates the selection to the nearest year, shifting the line accordingly. The visualization uses d3’s `scaleTime` and `scaleLinear` axes, a `line` generator with `curveBasis` for smoothing, and a color legend built with `scaleOrdinal` and `schemeCategory10`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/19969e115f8d434e9c38d2db0b31ea6b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}