polygonSmooth

Description

Smooths a Polygon or MultiPolygon. Based on Chaikin's algorithm. Warning: may create degenerate polygons.

Parameters

Name	Type	Description
inputPolys	FeatureCollection<Polygon | MultiPolygon> | Feature<Polygon | MultiPolygon> | Polygon | MultiPolygon	(Multi)Polygon(s) to smooth
options?	Object	Optional parameters (default {})
options.iterations?	string	The number of times to smooth the polygon. A higher value means a smoother polygon. (default 1)

Returns

FeatureCollection<Polygon | MultiPolygon> FeatureCollection containing the smoothed polygon/multipoylgons

Examples

var polygon = turf.polygon([
  [
    [11, 0],
    [22, 4],
    [31, 0],
    [31, 11],
    [21, 15],
    [11, 11],
    [11, 0],
  ],
]);

var smoothed = turf.polygonSmooth(polygon, { iterations: 3 });

Installation

$ npm install @turf/polygon-smooth

import { polygonSmooth } from "@turf/polygon-smooth";
const result = polygonSmooth(...);

$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.polygonSmooth(...);