dissolve

描述

¥Description

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

¥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<多边形>
options?	对象	可选参数（默认 ）
options.propertyName?	string	features with the same propertyName value will be dissolved.
featureCollection	FeatureCollection<多边形>	input feature collection to be dissolved

返回

¥Returns

FeatureCollection<多边形> a FeatureCollection containing the dissolved polygons

¥FeatureCollection<Polygon> a FeatureCollection containing the dissolved polygons

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(...);