@spatial/transform-translate

transformTranslate

Moves any geojson Feature or Geometry of a specified distance along a Rhumb Line on the provided direction angle.

Parameters

• geojson GeoJSON object to be translated
• distance number length of the motion; negative values determine motion in opposite direction
• direction number of the motion; angle from North in decimal degrees, positive clockwise
• options Object Optional parameters (optional, default {})
  • options.units string in which distance will be express; miles, kilometers, degrees, or radians (optional, default 'kilometers')
  • options.zTranslation number length of the vertical motion, same unit of distance (optional, default 0)
  • options.mutate boolean allows GeoJSON input to be mutated (significant performance increase if true) (optional, default false)

Examples

var poly = turf.polygon([[[0,29],[3.5,29],[2.5,32],[0,29]]]);
var translatedPoly = turf.transformTranslate(poly, 100, 35);

//addToMap
var addToMap = [poly, translatedPoly];
translatedPoly.properties = {stroke: '#F00', 'stroke-width': 4};

Returns GeoJSON the translated GeoJSON object

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 @spatial/transform-translate

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

$ npm install @turf/turf