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Selecting a year on line chart

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AAjit Singh
Last edited Jan 17, 2021
Created on Jan 17, 2021

This line chart displays world population estimates by region from 1950 to 2100, using data from the UN Population Estimates and Medium Variant datasets. A vertical line marks the currently selected year, which updates as the user moves the mouse across the chart. The visualization is built with D3 v5, using `d3.nest` to group data by region, `d3.line` with `curveBasis` for smooth paths, and `d3.axisBottom` and `d3.axisLeft` for axes. Hovering triggers `d3.mouse` and `xScale.invert` to detect the year, then re-renders the selection line.

AI-generated description

An example including some commonly used features of SVG.

MIT Licensed

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