The JavaScript library for bespoke data visualization Create custom dynamic visualizations with unparalleled flexibility Get started

Getting started D3 works in any JavaScript environment. Try D3 online The fastest way to get started (and get help) with D3 is on Observable! D3 is available by default in notebooks as part …

D3 (or D3.js) is a free, open-source JavaScript library for visualizing data. Its low-level approach built on web standards offers unparalleled flexibility in authoring dynamic, data-driven graphics.

js function separation(a, b) { return a.parent == b.parent ? 1 : 2; }

If a specified datum does not exist in this quadtree (as determined by strict equality with datum, and independent of the computed position), it is ignored. quadtree.copy () js const t1 = …

js const line = d3.line() .x((d) => x(d.date)) .y((d) => y(d.value));

Lines Examples · The line generator produces a spline or polyline as in a line chart. Lines also appear in many other visualization types, such as the links in hierarchical edge bundling. See …

D3 uses spherical GeoJSON to represent geographic features in JavaScript. D3 supports a wide variety of common and unusual map projections. And because D3 uses spherical geometry to …

The JavaScript library for bespoke data visualizationAzimuthal projections Azimuthal projections project the sphere directly onto a plane. geoAzimuthalEqualArea () Source · The azimuthal …

In some cases, JavaScript may coerce strings to numbers for you automatically (for example, using the + operator), but better is to specify a row conversion function. See d3.autoType for a …