d3-viz

# D3.js Visualisation ## Overview This skill provides guidance for creating sophisticated, interactive data visualisations using d3.js. D3.js (Data-Driven Documents) excels at binding data to DOM elements and applying data-driven transformations to create custom, publication-quality visualisations with precise control over every visual element. The techniques work across any JavaScript environment, including vanilla JavaScript, React, Vue, Svelte, and other frameworks. ## When to use d3.js **Use d3.js for:** - Custom visualisations requiring unique visual encodings or layouts - Interactive explorations with complex pan, zoom, or brush behaviours - Network/graph visualisations (force-directed layouts, tree diagrams, hierarchies, chord diagrams) - Geographic visualisations with custom projections - Visualisations requiring smooth, choreographed transitions - Publication-quality graphics with fine-grained styling control - Novel chart types not available in standard libraries **Consider alternatives for:** - 3D visualisations - use Three.js instead ## Core workflow ### 1. Set up d3.js Import d3 at the top of your script: ```javascript import * as d3 from 'd3'; ``` Or use the CDN version (7.x): ```html <script src="https://d3js.org/d3.v7.min.js"></script> ``` All modules (scales, axes, shapes, transitions, etc.) are accessible through the `d3` namespace. ### 2. Choose the integration pattern **Pattern A: Direct DOM manipulation (recommended for most cases)** Use d3 ...