May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Node-link structures
Another common way to represent a network is with a pair of arrays: a list of nodes and a list of links (also called an adjacency list). Each link contains references to its adjacent nodes, and may contain a value, if weighted. We generated node-link structures in the previous chapter using d3.hierarchy to represent rooted trees (which are connected undirected graphs with a single root and no cycles).
The matrix data shown in the last section could be represented as the list structure shown below (see Adjacency/2-node-link.html):
const edges = [ {source: 0, target: 1, value: 6}, {source: 0, target: 2, value: 2}, {source: 1, target: 0, value: 8}, {source: 1, target: 2, value: 5}, {source: 2, target: 1, value: 1}, {source: ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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