Takes a FeatureCollection and returns a FeatureCollection with given number of features at random.
Parameters
featurecollection
FeatureCollection set of input featuresnum
number number of features to select
Examples
var points = turf.randomPoint(100, {bbox: [-80, 30, -60, 60]});
var sample = turf.sample(points, 5);
//addToMap
var addToMap = [points, sample]
turf.featureEach(sample, function (currentFeature) {
currentFeature.properties['marker-size'] = 'large';
currentFeature.properties['marker-color'] = '#000';
});
Returns FeatureCollection a FeatureCollection with n
features
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.
Install this module individually:
$ npm install @turf/sample
Or install the Turf module that includes it as a function:
$ npm install @turf/turf