Area Chart

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Last edited Feb 28, 2020

Created on Feb 28, 2020

Forked from Coronavirus Impact Area Chart by Dimanjan

This example demonstrates an interactive area chart built with D3.js (v4) that presents two overlaid series with gradient fills, rendered as SVG. The visualization initially displays one dataset, and a button click transitions the chart to a second, extended dataset. The chart's axes and area paths smoothly animate their transitions over two seconds using D3's `.transition()` method. The code defines linear gradients with specified opacity stops for series styling, and uses `d3.scaleLinear` and `d3.axisBottom`/`d3.axisRight` for scaling and axes, respectively.

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