turf/packages/turf-boolean-point-on-line

@turf/boolean-point-on-line

booleanPointOnLine

Returns true if a point is on a line. Accepts a optional parameter to ignore the start and end vertices of the linestring.

Parameters

• pt Coord GeoJSON Point

• line Feature<LineString> GeoJSON LineString

• options Object Optional parameters (optional, default {})

  • options.ignoreEndVertices boolean whether to ignore the start and end vertices. (optional, default false)
  • options.epsilon number? Fractional number to compare with the cross product result. Useful for dealing with floating points such as lng/lat points

Examples

var pt = turf.point([0, 0]);
var line = turf.lineString([[-1, -1],[1, 1],[1.5, 2.2]]);
var isPointOnLine = turf.booleanPointOnLine(pt, line);
//=true

Returns boolean true/false

---

This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

Installation

Install this single module individually:

$ npm install @turf/boolean-point-on-line

Or install the all-encompassing @turf/turf module that includes all modules as functions:

$ npm install @turf/turf