dissolve

描述

🌐 Description

溶解一个经过可选属性名称:值筛选的 Polygon 特性集合。请注意，集合中的 MultiPolygon 特性不受支持

🌐 Dissolves a FeatureCollection of Polygon features, filtered by an optional property name:value. Note that MultiPolygon features within the collection are not supported

参数

🌐 Parameters

名称	类型	描述
fc	FeatureCollection<Polygon>
options?	Object	可选参数 (默认 {})
options.propertyName?	string	具有相同 propertyName 值的要素将被合并。
featureCollection	FeatureCollection<Polygon>	要被合并的输入要素集合

返回

🌐 Returns

FeatureCollection<Polygon> 一个包含融合多边形的要素集合

示例

🌐 Examples

var features = turf.featureCollection([
  turf.polygon(
    [
      [
        [0, 0],
        [0, 1],
        [1, 1],
        [1, 0],
        [0, 0],
      ],
    ],
    { combine: "yes" },
  ),
  turf.polygon(
    [
      [
        [0, -1],
        [0, 0],
        [1, 0],
        [1, -1],
        [0, -1],
      ],
    ],
    { combine: "yes" },
  ),
  turf.polygon(
    [
      [
        [1, -1],
        [1, 0],
        [2, 0],
        [2, -1],
        [1, -1],
      ],
    ],
    { combine: "no" },
  ),
]);

var dissolved = turf.dissolve(features, { propertyName: "combine" });

安装

🌐 Installation

$ npm install @turf/dissolve

import { dissolve } from "@turf/dissolve";
const result = dissolve(...);

$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.dissolve(...);