# getCluster
Get Cluster
获取集群
> npm install @turf/clusters
参数
参数 | 类型 | 描述 |
---|---|---|
geojson | FeatureCollection | GeoJSON Features |
filter | * | Filter used on GeoJSON properties to get Cluster |
返回
FeatureCollection - Single Cluster filtered by GeoJSON Properties
示例
var geojson = turf.featureCollection([
turf.point([0, 0], {'marker-symbol': 'circle'}),
turf.point([2, 4], {'marker-symbol': 'star'}),
turf.point([3, 6], {'marker-symbol': 'star'}),
turf.point([5, 1], {'marker-symbol': 'square'}),
turf.point([4, 2], {'marker-symbol': 'circle'})
]);
// Create a cluster using K-Means (adds `cluster` to GeoJSON properties)
var clustered = turf.clustersKmeans(geojson);
// Retrieve first cluster (0)
var cluster = turf.getCluster(clustered, {cluster: 0});
//= cluster
// Retrieve cluster based on custom properties
turf.getCluster(clustered, {'marker-symbol': 'circle'}).length;
//= 2
turf.getCluster(clustered, {'marker-symbol': 'square'}).length;
//= 1