@turf/line-overlap

lineOverlap

Takes any LineString or Polygon and returns the overlapping lines between both features.

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* line1 ([Geometry][1] | [Feature][2]<([LineString][3] | [MultiLineString][4] | [Polygon][5] | [MultiPolygon][6])>) any LineString or Polygon
* line2 ([Geometry][1] | [Feature][2]<([LineString][3] | [MultiLineString][4] | [Polygon][5] | [MultiPolygon][6])>) any LineString or Polygon
* options [Object][7] Optional parameters (optional, default {})

* options.tolerance [number][8] Tolerance distance to match overlapping line segments (in kilometers) (optional, default 0)

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``javascript
var line1 = turf.lineString([[115, -35], [125, -30], [135, -30], [145, -35]]);
var line2 = turf.lineString([[115, -25], [125, -30], [135, -30], [145, -25]]);

var overlapping = turf.lineOverlap(line1, line2);

//addToMap
var addToMap = [line1, line2, overlapping]
`

Returns [FeatureCollection][9]<[LineString][3]> lines(s) that are overlapping between both features

[1]: https://tools.ietf.org/html/rfc7946#section-3.1

[2]: https://tools.ietf.org/html/rfc7946#section-3.2

[3]: https://tools.ietf.org/html/rfc7946#section-3.1.4

[4]: https://tools.ietf.org/html/rfc7946#section-3.1.5

[5]: https://tools.ietf.org/html/rfc7946#section-3.1.6

[6]: https://tools.ietf.org/html/rfc7946#section-3.1.7

[7]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object

[8]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number

[9]: https://tools.ietf.org/html/rfc7946#section-3.3

---

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.

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Install this single module individually:

`sh
$ npm install @turf/line-overlap
`

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

`sh
$ npm install @turf/turf
``