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digraph

v1.6.1

Published

Directed graph library

Downloads

47

Readme

NPM version Build Status Coverage Status

digraph

Digraph module provides several functions for working with directed graphs (digraphs) in JavaScript.

node.js

npm i digraph --save

browser

Use browserify.

API

var digraph = require('digraph');

digraph is a factory function creates directed graph object.

var g1 = digraph();

g.node() -> n

Digraph object has node factory function.

<Node> = g1.node(<N>)

Creates new node object if needed.

N: undefined

Constructs new noname node object.

N: {String}

Search for existing node object with this name. Constructs new node object with the name if can`t find existing node.

N: {Object}

Uses provided Object as node object descriptor. Search for existing node object if name: 'NodeName' is provided.

Examples:

var a = g1.node('a');

var node = g1.node; // can be detached

var b = node('b');
var c = node('c');

n.edge(n) -> e

Node object has edge factory that will search for the relevant edge or create one if needed.

Examples:

var a_b = a.edge(b);
var b_e = node('b').edge(node('e'));

var c_ = c.edge; // can be detached
var c_d = c_(d);
var c_e = c_(e);

g.edges

[<Edge>] = g1.edges.from(<Node>)

Return array of all outgoing edges.

[<Edge>] = g1.edges.to(<Node>)

Return array of all incoming edges.

[<Edge>] = g1.edges.at(<Node>)

g.get

[<Node>] = g.get.nodes

Return array of nodes in no particular order.

[<Edge>] = g.get.edges

Return array of edges in no particular order.