Description
Simplifies the geometries in a GeoJSON object. Uses the 2d version of simplify-js.
Parameters
| Name | Type | Description |
|---|---|---|
| geojson | GeoJSON | GeoJSON object to be simplified |
| options? | Object | Optional parameters (default {}) |
| options.tolerance? | number | Simplification tolerance (default 1) |
| options.highQuality? | boolean | Produce a higher-quality simplification using a slower algorithm (default false) |
| options.mutate? | boolean | Allow GeoJSON input to be mutated (significant performance improvement if true) (default false) |
Returns
GeoJSON Simplified GeoJSON
Examples
const geojson = turf.polygon([
[
[-70.603637, -33.399918],
[-70.614624, -33.395332],
[-70.639343, -33.392466],
[-70.659942, -33.394759],
[-70.683975, -33.404504],
[-70.697021, -33.419406],
[-70.701141, -33.434306],
[-70.700454, -33.446339],
[-70.694274, -33.458369],
[-70.682601, -33.465816],
[-70.668869, -33.472117],
[-70.646209, -33.473835],
[-70.624923, -33.472117],
[-70.609817, -33.468107],
[-70.595397, -33.458369],
[-70.587158, -33.442901],
[-70.587158, -33.426283],
[-70.590591, -33.414248],
[-70.594711, -33.406224],
[-70.603637, -33.399918],
],
]);
const result0_01 = turf.simplify(geojson, { tolerance: 0.01 });
const result0_005 = turf.simplify(geojson, { tolerance: 0.005 });
Installation
$ npm install @turf/simplify
import { simplify } from "@turf/simplify";
const result = simplify(...);
$ npm install @turf/turf
import * as turf from "@turf/turf";
const result = turf.simplify(...);