几何对象集合(geometryCollection)

> npm install @turf/helpers

Creates a Feature based on a coordinate array. Properties can be added optionally.

接收任意的Geometry数组，创建tyoe为GeometryCollection的集合

参数

参数	类型	描述
geometries	Array <Geometry>	入参Geometry的数组
properties	Object	出参的 properties 属性
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

Feature <GeometryCollection> - a GeoJSON GeometryCollection Feature

示例

var pt = {
  type: "Point",
  coordinates: [100, 0]
};
var line = {
  type: "LineString",
  coordinates: [
    [101, 0],
    [102, 1]
  ]
};
var collection = turf.geometryCollection(
  [pt, line],
  {
    id: "inner"
  },
  {
    id: "outter"
  }
);
/*
{
  type: "Feature",
  geometry: {
    type: "GeometryCollection",
    geometries: [
      {
        type: "Point",
        coordinates: [100, 0]
      },
      {
        type: "LineString",
        coordinates: [
          [101, 0],
          [102, 1]
        ]
      }
    ]
  },
  properties: {
    id: 'inner',
  },
  id: "outter"
}
*/