KBE3D / KBCore / turf / sample

函数: sample()

sample<T>(fc: FeatureCollection<T>, num: number): FeatureCollection<T>

Function

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

类型参数

T

T extends Geometry

参数

fc

FeatureCollection<T>

num

number

number of features to select

返回

FeatureCollection<T>

a FeatureCollection with n features

示例

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

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

//addToMap
var addToMap = [points, sample]
turf.featureEach(sample, function (currentFeature) {
  currentFeature.properties['marker-size'] = 'large';
  currentFeature.properties['marker-color'] = '#000';
});