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calculate the area of a polygon or multipolygon feature

Package Exports

  • turf-area

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (turf-area) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

turf-area

build status

calculate the area of a polygon or multipolygon feature

turf.area(input)

Takes a one or more features and returns their area in square meters.

Parameters

parameter type description
input Feature,FeatureCollection input features

Example

var polygons = {
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [[
          [-67.031021, 10.458102],
          [-67.031021, 10.53372],
          [-66.929397, 10.53372],
          [-66.929397, 10.458102],
          [-67.031021, 10.458102]
        ]]
      }
    }, {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [[
          [-66.919784, 10.397325],
          [-66.919784, 10.513467],
          [-66.805114, 10.513467],
          [-66.805114, 10.397325],
          [-66.919784, 10.397325]
        ]]
      }
    }
  ]
};

var area = turf.area(polygons);

//=area

Returns Number, area in square meters

Installation

Requires nodejs.

$ npm install turf-area

Tests

$ npm test