@turf/intersect

intersect

Takes polygon or multi-polygon geometries and finds their polygonal intersection. If they don't intersect, returns null.

Parameters

• features FeatureCollection<(Polygon | MultiPolygon)> the features to intersect

• options Object Optional Parameters (optional, default {})

  • options.properties Object Translate GeoJSON Properties to Feature (optional, default {})

Examples

var poly1 = turf.polygon([[
  [-122.801742, 45.48565],
  [-122.801742, 45.60491],
  [-122.584762, 45.60491],
  [-122.584762, 45.48565],
  [-122.801742, 45.48565]
]]);

var poly2 = turf.polygon([[
  [-122.520217, 45.535693],
  [-122.64038, 45.553967],
  [-122.720031, 45.526554],
  [-122.669906, 45.507309],
  [-122.723464, 45.446643],
  [-122.532577, 45.408574],
  [-122.487258, 45.477466],
  [-122.520217, 45.535693]
]]);

var intersection = turf.intersect(turf.featureCollection([poly1, poly2]));

//addToMap
var addToMap = [poly1, poly2, intersection];

Returns (Feature | null) returns a feature representing the area they share (either a Polygon or MultiPolygon). If they do not share any area, returns null.

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 single module individually:

$ npm install @turf/intersect

Or install the all-encompassing @turf/turf module that includes all modules as functions:

$ npm install @turf/turf