turf-along

along

Takes a line and returns a point at a specified distance along the line.

Parameters

• line Feature<LineString> input line
• distance number distance along the line
• units [String] can be degrees, radians, miles, or kilometers (optional, default miles)

Examples

var line = {
  "type": "Feature",
  "properties": {},
  "geometry": {
    "type": "LineString",
    "coordinates": [
      [-77.031669, 38.878605],
      [-77.029609, 38.881946],
      [-77.020339, 38.884084],
      [-77.025661, 38.885821],
      [-77.021884, 38.889563],
      [-77.019824, 38.892368]
    ]
  }
};
 
var along = turf.along(line, 1, 'miles');
 
var result = {
  "type": "FeatureCollection",
  "features": [line, along]
};
 
//=result

Returns Feature<Point> Point distance units along the line

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 module individually:

$ npm install turf-along

Or install the Turf module that includes it as a function:

$ npm install turf