simple-interval-tree-1d

Inspired by interval-tree-1d (https://github.com/mikolalysenko/interval-tree-1d)

A simple 1D interval tree. Supports O(log(n)) amortized updates and O(log(n)) queries.

Example

var createIntervalTree = require("simple-interval-tree-1d")

//Create some random list of intervals
var intervals = [ [1, 2], [-1, 0], [0.5, 1], [-10, 10] ]

//Build tree
var tree = createIntervalTree(intervals)

//Find all intervals containing query point 0.7
console.log("querying point:", 0.7)
tree.queryPoint(0.7, function(interval) {
  console.log(interval)
})

API

var createIntervalTree = require("simple-interval-tree-1d")

Constructor

var tree = createIntervalTree(intervals)

Constructs an interval tree given a list of intervals

Properties

tree.count

Returns the number of items in the tree

tree.intervals

Returns a list of all the intervals in the tree

tree.insert(interval)

Adds an interval to the tree

tree.remove(interval)

Removes an interval from the tree

tree.queryPoint(p, visit(interval))

Visits all intervals containing the point p

tree.queryInterval(lo, hi, visit(interval))

Returns all intervals which intersect the interval [lo, hi]

Credits

(c) 2013-2015 Mikola Lysenko. MIT License