turf-envelope

turf-envelope

envelope

Takes any number of features and returns a rectangular Polygon that encompasses all vertices.

Parameters

• fc FeatureCollection input features

Examples

var fc = {
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "name": "Location A"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [-75.343, 39.984]
      }
    }, {
      "type": "Feature",
      "properties": {
        "name": "Location B"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [-75.833, 39.284]
      }
    }, {
      "type": "Feature",
      "properties": {
        "name": "Location C"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [-75.534, 39.123]
      }
    }
  ]
};

var enveloped = turf.envelope(fc);

var resultFeatures = fc.features.concat(enveloped);
var result = {
  "type": "FeatureCollection",
  "features": resultFeatures
};

//=result

Returns Feature<Polygon> a rectangular Polygon feature that encompasses all vertices

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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-envelope

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

$ npm install turf