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[07] Gauge Chart - Using React Hooks with D3

✓ Published2🌍 Public
Ggjonor
Last edited Feb 23, 2020
Created on Feb 22, 2020

A gauge chart shows a single dynamic value as a two-part donut arc, with the current proportion displayed as a text label. The chart responds to controls that adjust, filter, or append to the data array. The code uses React hooks (`useRef`, `useEffect`) to manage the D3.js SVG rendering, with D3's `arc` and `pie` functions calculating the arc paths. Animated updates are handled via `transition.attrTween`, interpolating between previous and new arc data. The `d3.drag` API allows the user to horizontally drag a button to resize the container, triggering the gauge to update reactively.

AI-generated description

2020-w08-6

Tutorial series:

The Muratorium: Using React (Hooks) with D3

  • [07] Gauge Chart
MIT Licensed

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