turf-filter

turf filter module

turf.filter(features, key, value)

Takes a FeatureCollection and filters it by a given property and value

Parameters

parameter	type	description
features	FeatureCollection	input FeatureCollection of any type
key	String	the property on which to filter
value	String	the value of that property on which to filter

Example

var features = turf.featurecollection([
 turf.point([-72.581777, 44.260875], {species: 'oak'}),
 turf.point([-72.570018, 44.260691], {species: 'birch'}),
 turf.point([-72.576284, 44.257925], {species: 'oak'}),
 turf.point([-72.56916, 44.254605], {species: 'redwood'}),
 turf.point([-72.581691, 44.24858], {species: 'maple'}),
 turf.point([-72.583837, 44.255773], {species: 'oak'})
]);
 
var key = 'species';
var value = 'oak';
 
var filtered = turf.filter(features, key, value);
 
//=features
 
//=filtered

Installation

Requires nodejs.

$ npm install turf-filter

Tests

$ npm test