@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.

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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