Melting Data for Multiple Lines

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Melting Data for Multiple Lines

✓ Published1🌍 Public

Last edited Mar 8, 2021

Created on Dec 20, 2020

This visualization displays the history and future of world population as multiple lines, one per country or region, sorted by their final population value. The chart uses a time-based x-axis and a linear y-axis with formatted tick labels, while a color-coded legend identifies each line. Built with D3 v6, the example uses `d3.nest()` to group melted data from two UN population CSV datasets, `d3.line()` with `curveBasis` to generate smoothed paths, and a custom `colorLegend` component to render the ordinal color scale legend.

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MIT Licensed

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