@turf/angle

angle

Finds the angle formed by two adjacent segments defined by 3 points. The result will be the (positive clockwise) angle with origin on the startPoint-midPoint segment, or its explementary angle if required.

Parameters

• startPoint Coord Start Point Coordinates

• midPoint Coord Mid Point Coordinates

• endPoint Coord End Point Coordinates

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

  • options.explementary boolean Returns the explementary angle instead (360 - angle) (optional, default false)
  • options.mercator boolean if calculations should be performed over Mercator or WGS84 projection (optional, default false)

Examples

turf.angle([5, 5], [5, 6], [3, 4]);
//=45

Returns number Angle between the provided points, or its explementary.

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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/angle

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

$ npm install @turf/turf

Diagrams