Package Exports

@turf/dissolve

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Readme

@turf/dissolve

dissolve

Dissolves a FeatureCollection of polygons based on a property. Note that multipart features within the collection are not supported

Parameters

featureCollection FeatureCollection<Polygon> input feature collection to be dissolved
propertyName [string] property name on which to dissolve features

Examples

var features = {
"type": "FeatureCollection",
"features": [
  {
    "type": "Feature",
    "properties": {
      "combine": "yes"
    },
    "geometry": {
      "type": "Polygon",
      "coordinates": [[[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]]
    }
  },
  {
    "type": "Feature",
    "properties": {
      "combine": "yes"
    },
    "geometry": {
      "type": "Polygon",
      "coordinates": [[[0, -1], [0, 0], [1, 0], [1, -1], [0,-1]]]
    }
  },
  {
    "type": "Feature",
    "properties": {
      "combine": "no"
    },
    "geometry": {
      "type": "Polygon",
      "coordinates": [[[1,-1],[1, 0], [2, 0], [2, -1], [1, -1]]]
    }
  }
 ]
}

var dissolved = turf.dissolve(features, 'combine');

//addToMap
var addToMap = [features, dissolved]

Returns FeatureCollection<Polygon> a FeatureCollection containing the dissolved polygons

This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

Installation

Install this module individually:

$ npm install @turf/dissolve

Or install the Turf module that includes it as a function:

$ npm install @turf/turf