README.md

turf-area

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