Selecting a Year on a Line Chart

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Selecting a Year on a Line Chart

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Last edited Jul 16, 2019

Created on Jul 15, 2019

Forked from Selecting a Year on a Line Chart

This line chart displays population trends over time for world regions, with a visual selection mechanism for a specific year (2019). The visualization uses D3 v5 to render an SVG, loading data from UN population estimates CSV files. The code employs `d3.nest()` to group data by region, `d3.scaleTime` and `d3.scaleLinear` for axes, and a custom color legend built with `d3-selection`. A `parseYear` function converts year values, while the chart updates interactively when a new year is selected.

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