@spatial/intersect v1.0.5

@spatial/intersect

intersect

Takes two polygons and finds their intersection. If they share a border, returns the border; if they don't intersect, returns undefined.

Parameters

• poly1 Feature<Polygon> the first polygon
• poly2 Feature<Polygon> the second polygon

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(poly1, poly2);

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

Returns (Feature | null) returns a feature representing the point(s) they share (in case of a Point or MultiPoint), the borders they share (in case of a LineString or a MultiLineString), the area they share (in case of Polygon or MultiPolygon). If they do not share any point, 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 module individually:

$ npm install @spatial/intersect

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

$ npm install @turf/turf