@turf/rewind

rewind

Rewind (Multi)LineString or (Multi)Polygon outer ring counterclockwise and inner rings clockwise (Uses Shoelace Formula).

Parameters

• geojson GeoJSON input GeoJSON Polygon

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

  • options.reverse boolean enable reverse winding (optional, default false)
  • options.mutate boolean allows GeoJSON input to be mutated (significant performance increase if true) (optional, default false)

Examples

var polygon = turf.polygon([[[121, -29], [138, -29], [138, -18], [121, -18], [121, -29]]]);

var rewind = turf.rewind(polygon);

//addToMap
var addToMap = [rewind];

Returns GeoJSON rewind Polygon

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/rewind

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

$ npm install @turf/turf