# sample
Takes a FeatureCollection and returns a FeatureCollection with given number of features at random.
获取一个FeatureCollection，并随机返回一个具有给定数量Feature的FeatureCollection。
> npm install @turf/sample
参数
| 参数 | 类型 | 描述 |
|---|---|---|
| featurecollection | FeatureCollection | set of input features |
| num | number | number of features to select |
返回
FeatureCollection - a FeatureCollection with n features
示例
var points = turf.randomPoint(100, {bbox: [-80, 30, -60, 60]});
var sample = turf.sample(points, 5);