sample

描述

🌐 Description

接受一个 FeatureCollection 并返回一个包含指定数量的随机 features 的 FeatureCollection。

🌐 Takes a FeatureCollection and returns a FeatureCollection with given number of features at random.

参数

🌐 Parameters

名称	类型	描述
fc	FeatureCollection<T>
num	number	要选择的特性数量
featurecollection	FeatureCollection	输入特性集

返回

🌐 Returns

FeatureCollection 一个包含 n 个要素的 FeatureCollection

示例

🌐 Examples

var points = turf.randomPoint(100, { bbox: [-80, 30, -60, 60] });

var sample = turf.sample(points, 5);

安装

🌐 Installation

$ npm install @turf/sample

import { sample } from "@turf/sample";
const result = sample(...);

$ npm install @turf/turf

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