@turf/within

@turf/within

within

Takes a set of points and a set of polygons and returns the points that fall within the polygons.

Parameters

• points FeatureCollection<Point> input points
• polygons FeatureCollection<Polygon> input polygons

Examples

var searchWithin = turf.featureCollection([
    turf.polygon([[
        [-46.653,-23.543],
        [-46.634,-23.5346],
        [-46.613,-23.543],
        [-46.614,-23.559],
        [-46.631,-23.567],
        [-46.653,-23.560],
        [-46.653,-23.543]
    ]])
]);
var points = turf.featureCollection([
    turf.point([-46.6318, -23.5523]),
    turf.point([-46.6246, -23.5325]),
    turf.point([-46.6062, -23.5513]),
    turf.point([-46.663, -23.554]),
    turf.point([-46.643, -23.557])
]);

var ptsWithin = turf.within(points, searchWithin);

//addToMap
var addToMap = [points, searchWithin, ptsWithin]
turf.featureEach(ptsWithin, function (currentFeature) {
  currentFeature.properties['marker-size'] = 'large';
  currentFeature.properties['marker-color'] = '#000';
});

Returns FeatureCollection<Point> points that land within at least one polygon

---

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.

Installation

Install this module individually:

$ npm install @turf/within

Or install the Turf module that includes it as a function:

$ npm install @turf/turf