Geojson-geometries NPM

Install

$ npm install --save geojson-geometries

Usage

const GeoJsonGeometries = require('geojson-geometries');

const geojson = {type: 'FeatureCollection',
  features: [{
    type: 'Feature',
    geometry: {
      type: 'Point',
      coordinates: [102.0, 0.5]
    },
    properties: {prop0: 'value0'}
  }, {
    type: 'Feature',
    geometry: {
      type: 'LineString',
      coordinates: [[102.0, 0.0], [103.0, 1.0], [104.0, 0.0], [105.0, 1.0]]
    },
    properties: {prop1: 'value1'}
  }, {
    type: 'Feature',
    geometry: {
      type: 'Polygon',
      coordinates: [
        [[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]]
      ]
    },
    properties: {prop2: 'value2'}
  }]
};

const extracted = new GeoJsonGeometries(geojson);

extracted.points
// => {
//   type: "FeatureCollection",
//   features: [{
//     type: "Feature",
//     geometry: {
//       type: "Point",
//       coordinates: [102, 0.5]
//     },
//     properties: {prop0: 'value0'}
//   }]
// }

extracted.lines
// => {
//   type: "FeatureCollection",
//   features: [{
//     type: "Feature",
//     geometry: {
//       type: "LineString",
//       coordinates: [[[102.0, 0.0], [103.0, 1.0], [104.0, 0.0], [105.0, 1.0]]]
//     },
//     properties: {prop1: 'value1'}
//   }]
// }

extracted.polygons
// => {
//   type: "FeatureCollection",
//   features: [{
//     type: "Feature",
//     geometry: {
//       type: "Polygon",
//       coordinates: [[[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]]]
//     },
//     properties: {prop2: 'value2'}
//   }]
// }

API

new GeoJsonGeometries(geoJson, options)

Create an instance of the geometries extractor.

Param	Type	Description
geoJson	Object	The GeoJSON from which extract the geometries.
options	Object	Optional options.
options.ignorePoints	boolean	If true the extractor will ignore geometries of type Point.
options.ignoreLines	boolean	If true the extractor will ignore geometries of type LineString.
options.ignorePolygon	boolean	If true the extractor will ignore geometries of type Polygon.