feature集合(featureCollection)

> npm install @turf/helpers

Takes one or more Features and creates a FeatureCollection.

接收一个或多个Feature，创建并返回他们的要素集(FeatureCollection)。

参数

参数	类型	描述
features	Array <Feature>	要素数组
options	Object	可配置项

options选项

属性	类型	默认值	描述
bbox	(Array)		边界框
id	(string|number)		标识符

返回

FeatureCollection - FeatureCollection of Features

FeatureCollection - 要素集合

示例

var locationA = turf.point([-75.343, 39.984], { name: "Location A" });
var locationB = turf.point([-75.833, 39.284], { name: "Location B" });
var locationC = turf.point([-75.534, 39.123], { name: "Location C" });

var collection = turf.featureCollection([locationA, locationB, locationC], {
  bbox: [1, 2, 3, 4],
  id: "id"
});
/*
{
  type: "FeatureCollection",
  features: [{...},{...},{...}],
  bbox: [1, 2, 3, 4] // 同级
  id: "id" // 同级
}
*/