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Version: 7.1.0

buffer

Description

Calculates a buffer for input features for a given radius. Units supported are miles, kilometers, and degrees.

When using a negative radius, the resulting geometry may be invalid if it's too small compared to the radius magnitude. If the input is a FeatureCollection, only valid members will be returned in the output FeatureCollection - i.e., the output collection may have fewer members than the input, or even be empty.

Parameters

NameTypeDescription
geojsonFeatureCollection | Geometry | Feature<any>input to be buffered
radiusnumberdistance to draw the buffer (negative values are allowed)
options?ObjectOptional parameters (default {})
options.units?stringany of the options supported by turf units (default "kilometers")
options.steps?numbernumber of steps (default 8)

Returns

Examples

var point = turf.point([-90.54863, 14.616599]);
var buffered = turf.buffer(point, 500, { units: "miles" });

Installation

$ npm install @turf/buffer

import { buffer } from "@turf/buffer";
const result = buffer(...);
$ npm install @turf/turf

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